AutoTran's GM Hydramatic (All Types) Transmission Parts
Part Numbers 8600000 and up, Group #'s 4.XXX
(Some miscellaneous earlier numbers included)

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GM 1940 to 1964  - Hydramatic - 1940 to 1956 (Chevy PU's to 1962),
 Jetaway - 1956 to 1964
and RotoHydramatic - 1961 to 1964 Part Numbers
(If the GM number is listed below it means I
have it in stock, unless it says Quantity 0)

Sept. 30, 2008 this list was started & added to my web site, it is not complete
Last update to this page,
May 11, 2009

Group

GM Part Number

Description/Years

ATP
 P/N

Lempco
 P/N

Republic
 P/N

X-Ref/Size/Info

Quantity

Price

4.039

413430

Bracket, Control Shaft Lower, 1940-48, 60 & 70

2

$15.00

3.574

416651

Lever, 

7

$15.00

4.173

1299564

Washer, Main Shaft Lock Nut, 1937-42 AT & HM

5+

$4.00

4.248

8600018

Pipe, Front to Rear Servo Oil, 1940-41 HM

1

4.129

8600020

Washer, Steel

3

8600024

Snap Ring

2

8600035

Piston, Front & Rear Clutch Control, Steel  1940-42

8

8600052

Gear, Reverse Unit Oil Pump Drive, Bronze

7306

same 8609428

1

$25.00

4.129

8600061

Washer, Bronze

5

8600092

Sealing Ring, Front Servo Apply

3/32 X 1 7/16" same 8614122

10

4.179

8600093

Sleeve, Oil Delivery, 1940 only

see 8611135
for 1941-42

1

$75.00

8600100

Washer, Rear Unit Clutch Hub Front Thrust, 1941-42 Olds

Babbitt Faced?

9

4.219

8600102

Valve,

1

8600116

Valve?

1

4.128

8600118

Snap Ring, 

20+

4.129

8600145

Washer, Main Shaft Thrust, Bronze, .051", 1940-42 HM

7

8600146

Snap Ring

2

4.129

8600147

Washer, Main Shaft Thrust, Bronze, .077", 1940-42 HM

7

8600154

Sealing Ring

7408A

3/32 X 1"

5

4.129

8600202

Washer, Steel

4

4.408

8600211

Bushing,

7011R

ATH-636

11

$10.00

4.129

8600214

Washer, Front Unit Center Gear & Rear Unit Drive Shaft Thrust, Bronze, 1940-42 Olds

10+

$8.00

4.242

8600227

piston, Rear Servo Accumulator, 1940-41 (trans #1-16419)

8600246

Snap Ring (Spacer?)

1

8600271

Lever, Shift

304384 (H)

3

$18.00

8600297

Snap Ring (Horseshoe)

20+

8600323

Gasket, Torus, 1941 Cadillac HM

30 Bolt Holes
15" OD x 13-17/32" ID
14-3/8" BC

0

$15.00

4.242

8600446

Oil Ring, Booster, Small, 1955

3/32 X 1 7/16"

2

8600489

Piston & Rod

1

8600505

Pistons, Steel  1940-42

9

$8.00

4-129

8600509

Washer, Rear Unit Clutch Hub, Steel, 1941-42 Olds

6

$8.00

4.128

8601406

Snap Ring

2

4.259

8601567

Flange, Governor Drive, 1946-48

with keyway

1

8601820

Pin

10+

4.129

8602218

Washer, Bronze

5

4.133

8605800

Dipstick, 1946-

3113505(H&N)
209038(K)

1

$15.00

8606763

Snap Ring

7304
4401
4501

ATH-342

10+

$1.00

8607299

Snap Ring, Reverse Unit Ball Bearing to Shaft

7327

ATH-330

10+

$1.00

8607477

Band, Rear Unit Brake, 1946-51

7618

0

4.259

8607755

Flange, Governor Drive, 1946-53

without keyway

1

4.216

8608611

Valve, Oil Pressure Regulator, 1946-51

7623V

2

$20.00

4.255

8608657

Plug

3

4.129

8608658

Washer, Reverse Unit Thrust, Bronze

HW-15

7301

6

4.129

8608761

Washer, Reverse Unit Center Gear, Steel 

7302

8617148

7

4.244

8608780

Piston, Rear Servo Compensator, 1946-62

7517

8613764

2

4.294

8608996

Bolt, Reverse Anchor Support

10+

$10.00

8609022

Bolt Lock, Parking & Reverse Anchor

7612

ATH-1699

5

$2.00

4.216

8609052

Spring, Pressure Regulator Valve, 1946-49

2

$5.00

4.246

8609061

Spring, Rear-Servo Accumulator Piston Apply

7507

ATH-809

1

4.164

8609070

Pin, Rear Clutch Spring Guide

10+

4.164

8609071

Spring, Clutch Release, Inner Front & Rear Unit

50+

4.164

8609072

Spring, Clutch Release, Outer Front & Rear Unit

50+

4.234

8609116

Valve, Front  Servo, 4-3 Downshift, 1946-51

1

4.295

8609130

Spring, Reverse Anchor Retracting, 1946-50

10+

$2.00

4.234

8609162

Retainer (Clip)

2

4.129

8609191

Washer, Mainshaft Selective, 1946-56

HW-1

ATH-691

#1 .055-.059"

10+

$8.00

4.129

8609192

Washer, Mainshaft Selective, 1946-56

HW-2

ATH-692

#2 .062-.067"

10+

$8.00

4.129

8609193

Washer, Mainshaft Selective, 1946-56

HW-3

7209

ATH-693

#3 .071-.075"

10+

$8.00

4.129

8609194

Washer, Mainshaft Selective, 1946-56

HW-4

7209A

ATH-694

#4 .079-.083"

10+

$8.00

4.129

8609195

Washer, Mainshaft Selective, 1946-56

HW-5

7209B

ATH-695

#5 .087-.091"

10+

$8.00

4.129

8609196

Washer, Mainshaft Selective, 1946-56

HW-6

7209C

ATH-696

#6 .095-.099"

10+

$8.00

4.129

8609197

Washer, Mainshaft Selective, 1946-56

HW-7

7209D

ATH-697

#7 .103-.107"

10+

$8.00

4.129

8609198

Washer, Mainshaft Selective, 1946-56

HW-8

7209E

ATH-698

#8 .111-.115"

10+

$8.00

8609210

Piston?

2

4-129

8609421

Washer, Steel

ATH-1579

3

4.173
4.121

8609425

Nut, Fluid Coupling Main Shaft, 1937-54 - ?62

7050

 

6

$4.00

4.131

8609426

Plate, Bearing Cap Bolt Lock 1940-62 HM

7126

Early & Late

10+

$2.00

4.210

8609428

Gear, Reverse Unit Oil Pump Drive, Bronze

7306

ATH-1546

8600052

6

$25.00

4.127 4.179

8609431

Oil Ring, Front Unit Oil Delivery Sleeve, 1940-56

7125

ATH-218

3/32 X 2" B
same 8611253

100+

4.128
4.121

8609434

Snap Ring, General Purpose (5 req'd)

7100

ATH-441

7327B

100+ 

8609435

Pipe - Oil

ATH-1569

1

4.255

8609436

Sleeve, Governor Oil Delivery, 1948-50

6

4.127
4.256

8609440

Oil Ring, Governor (4 req'd)

HR-4A

7602A

ATF-271A

3/32 X 1 3/16"

100+

4.256

8609441

Stop, Governor Plunger, 1940-51

8

4.242

8609445

Ring, Rear Servo Piston Booster, Large, 1955

ATH-224

3/32 X 2"
same 8611254

50+

4.242

8609446

Discontinued - Use 7505

7505A

ATH-226

same 8611252

-

4.233

8609449

Spring, Front Servo Retracting (Release )

7411

ATH-802

1

$5.00

4.242

8609452

Sealing Ring,

5

4.129

8609455

Washer, Front Clutch Drum, Rear, Steel 

HW-13

7123

ATH-783

12

4.228

8609458

Piston, Front Servo (Front Band Release) 46-51

7413

4

$15.00

4.125

8609472*

Oil Rings, Front Cover (2 req'd)

7104 (B)

ATH-215

3/32 X 2 3/8" B

100+

$3.00

8609473

Seal, Front Pump, Metal Clad 1946-62 HM

HO-5

7103

AT-6850S

see 8618697

4.233

8609474

Spring, Front Servo Booster, 1940-54, not 1952

HS-3A

7412

ATH-808

10+

$8.00

4.211

8609476

Gear, Rear Oil Pump Driven  1946-52

2

$13.00

4.129

8609487

Washer, Front Unit Drive Gear, Front (Steel)

HW-9

7101

ATH-782

4

4.105

8609489

Bolt & Washer, Side Cover

20+

$1.50

4.225

8609492

Cylinder, Band Release Piston, 1946-51

2

$20.00

4.126

8609496

Key, Oil Pump Drive Gear

10

$1.00

4.129

8609497

Washer, Rear Unit Clutch Hub, .090"

HW-14

7206

same 8617342

9

$10.00

8609505

Valve, Fluid Coupling Driven Torus (8613150)

7054

2

$12.00

8609508

Spring, Fluid Coupling Driven Torus Valve

7053

McQ* #T 4000H

4

$5.00

8609511

Gear, Front Unit Drive, Rear, Bronze Washer

HW-11

7106

ATH-699

29

$8.00

8609512

Gear, Front Unit Drive, Front, Bronze Washer

HW-10

7102

ATH-700

3

4.226

8609514

Washer, Cover to Pump Body, Copper 1950-51

", 3 req'd

4.226

8609516

Valve, Front Oil Pump By-Pass, 1946-50

3

4.226

8609517

Spring, Front By-Pass Valve, 1946-50

3

4.222

8609531

Lock Plate, Inlet Pipe Bolt

10+

4.226

8609532

Bolt, Cover to Pump Body, 1950-51

-20 X 5/8"

1

4.226

8609534

Bolt, Oil Pump Cover, 1946-50

10+

$4.00

8609571

Snap Ring, Reverse Unit Center Gear

HP-8

7300

ATH-1687

8609584

Screw, Band Adjust, 1940-62 (Rear only 54-62)

7619

5+

$7.00

4.278

8609591

Lever & Shaft, Inside Throttle Valve, 1940-54
(See 8617136)

7624

2 (1)

$22.00

4.265

8609593

Valve, Manual Control, Late 1942 to 1950

10

$20.00

4.128

8609602

Snap Ring, Reverse Unit Internal Gear

HP-12

7311

ATH-326

7

$2.00

8609619

Plunger, Rear-Servo Check Valve

7510

1

$3.00

4.294

8609761

Anchor, Parking & Reverse, 1946-50

7611

4

$25.00

4.121

8610018

Retainer, Torus Check Valve, 1948-53

7055

1

$8.00

4.290

8610309

Spring, Blocker Piston Retracting, 1946-49 HM

10+

$5.00

4.290

8610468

Shim, Reverse Shifter Bracket, 1946-50 HM

8610745

Valve Package

ATH-1690

5+

0.667

8610980

Plug, Fluid Drain, 1940-42 HM

6

50

4.242

8611052

Sealing Ring, Rear Unit Compensator Piston, 1941 after trans.
#1-16419 & 1942

8611054

Sealing Ring

ATH-228

2

4.129

8611089

Washer, Bronze

10

4.129

8611097

Washer, Main Shaft Selective, 1940-42

5+

$8.00

4.246

8611106

Spring, Reverse Servo Piston Inner, 1941-42 Olds

4.179

8611135

Sleeve, Oil Delivery, 1941-42 only

" shorter than 8611654

1

$75.00

4.235

8611185

Plug, 

no group

1

8611189

Gear, Rear Oil Pump Driven  1953-62

3

8611191

Valve

1

4.129

8611215

Washer, Bronze

7

4.216

8611234

Plug, Oil Pressure Regulator, 1940-1949

Original Style, Long & Sht. Hex

3

$15.00

8611250

4.229

8611251

Sealing Ring, 

4

4.242

8611252

Ring, Rear Servo Piston, Booster Small, 46-54

7505

ATH-226

3/32 X 1 11/16"

1

4.242

8611254

Ring, Rear Servo Piston, Booster Large, 40-54

ATH-224

3/32 X 2"
same 8609445

1

4.286

8611315

Lever,

3128706(N)
209176(K)

1

$20.00

4.203

8611355

Cover, Rear Oil Pump, 1949-52

6

$8.00

8611581

Sealing Ring

ATH-215

3

4.179

8611654

Sleeve, Oil Delivery, 1946-62 (see below)

HX-1

7124

ATH-240

new, reproduction
not 8611135

10+

$65.00

4.179

8611654

Sleeve, Oil Delivery, with Sealing Rings, 1946-62 HM

K-7124

"

$70.00

4.265

8611662

Spring, Manual Valve, 1946-50

2+

4.152

8611671

Lever, Forward & Reverse Shift, Outer,
1950 & 51 Olds

209402(K)

1

8611714

Valve

5

8611715

Spring, Rear Servo Quick Exhaust Valve, 50-52

7509

3

4.226

8611743

Seat

8

8611744

Spring, Front Servo Check Valve, 1950-53

7400

ATH-854

1

8611768

Piston

7604

4

4.129

8611792

Washer, Front Planet Carrier, 1946-51

8611802

Valve

1

8611804

O'Ring

7621

ATH-1613

2

8611823

Valve

6

4.216

8611827

Gasket, Pressure Regulator Plug, 1950-56

7620A

ATH-1597A

4

$1.50

8611848

4

8611851

Sealing Ring

HR-5A

7414A

ATH-222

same 8619071

3

4.216

8611860

Spring, Pressure Regulator Valve, 1950

7622A

ATH-701A

9

$8.00

4.129

8611869

Washer, Bronze

ATH-336

9

8611878

Screw & Washer Kit

1

(8611914)

Snap Ring

HP-6

7325A

ATH-366

same 8614188

20+

8611929

Anchor, Parking & Reverse, 1951-56

7611A

1

4.189

8611936

Key

7317

ATH-1698

3

8611942

Spring, Pressure Regulator Valve,

7622X

305946(H)

5

$8.00

8611958

Reverse Unit Piston Release, Springs, 1951-62

7321

ATH-806

6 req'd

10+

8611961

Bolt

7613A

2

4.265

8611974

Valve, Manual Control, 1951 Only

1

$20.00

4.265

8611977

Spacer, Detent Plunger Retainer, 1951 Olds

2

4.128

8611980

Snap Ring, Reverse Piston to Retainer

HP-7

7319

ATH-327

10+

4.265

8601991

Spring, Manual Valve Detent, 1951-55

1

4.265

8611995

Plunger, Manual Valve Detent

4

4.279

8611999

Lever, Inside Shifter Control, 1951 only

7614A

1

$15.00

8612215

Snap Ring

HP-1

7325

ATH-365

8612243

Snap Ring

HP-3

7327A

ATH-364

10+

8613005

Seal, Front Pump, Metal Clad 1946-62 HM

HO-5

7103A

AT-6850S

Nat'l #450329 .468" T
Nat'l #412871 .375" T
2.625"ID X 3.350"OD

8613086

Spring, Reverse Blocker Piston

7606

ATH-882

1

8613114

Washer, Bronze

HW-17

7316

ATH-789

4

4.265

8613116

Body, (Part of a valve body)

cast #8613083 

1

$10.00

8613150

Valve, Torus Check, 1946-56

7054

ATH-1519

7

$8.00

4.290

8613177

Piston

7604A

2

8613179

Spring, Parking Brake Anchor Retracting 1951-62

7609A

1

4.226

8613198

Spring, Front Oil Pump Priming

307425 (K)

1

8613199

O'Ring

HG-2C

3979

ATH-1623

20+

8613232

Bolt

10

4.129

8613233

Washer

20+

4.216

8613235

Spring, Pressure Regulator Valve, 1951

7622B

ATH-878

1

8613260

Snap Ring

7204

ATH-332

50+

$1.00

4.226

8613262

Pump Pkg, Front Unit Oil, 1952-56

7105B

0

4.216

8613271

Spring, Pressure Regulator Valve, 1952-56

7622C

ATH-894

7

8613604

Plug Package, Regulator

305943 (H)

6

8613733

Retaining Clip

3

4.173

8613734

Washer, Main Shaft Nut Retaining

7051

ATH-1684

10+

4.244

8613764

Piston, Rear Servo Compensator, 1946-62

7517

see 8608780

(2)

4.290

8613810

Stop, Parking Blocker Piston Spring, 1951

8613839

Spring, 3-4 Coupling Check Valve

4648

1

8613934

Spring,

3

4.265

8613914

Valve Assembly, Front Servo Exhaust, 1951 Olds & Pontiac

1

4.250

8613949

Valve Package

7511B

ATH-1688

1

8613953

Lever, Forward & Reverse Shift, Outer,
1952 & 53

3

4.106

8614041

Sleeve, Line Exhaust Valve

6

4.106

8614050

Spring, Line Exhaust Valve, 1952

7405

5

4.106

8614051

Valve, Line Exhaust Valve, 1952

7406

4

8614053

Valve

7404

1

8614080

Valve

7607A

1

8614081

Spring, Parking Blocker Piston

7608A

ATH-885

2

4.290

8614082

Retainer, Piston Pin, 1952-56

5

8614096

Snap Ring

HP-4

4771

ATH-328

25+

4.242

8614122

Sealing Ring, Front Servo Apply, 1952-62

7408A

ATH-219

3/32 X 1 7/16" same 8600092

10+

8614125

Nut ?

1

8614126

Valve

7602A

2

4.279

8614134

Lever, Inside Shifter Control, 1952-56

7614B

1

$15.00

8614136

Pin, Timing Valve Plug, 1952-54

10+

8614184

Spring

2

8614186

Pin, Front Servo Valve, 1952

10+

8614188

Snap Ring

HP-6

7325A

ATH-366

20+

$3.00

8614360

Screw & Washer

10+

4.216

8614378

Valve, Oil Pressure Regulator, 1952-55

7623AV

4

$25.00

4.227

8614791

Spring, Over-Run Control Valve, 1953-56

7403A

ATH-864

10+

$2.00

8614792

Valve

7402B

4

8614793

Valve

7404A

2

4.106

8614794

Valve, Exhaust Line, 1953-55

7406B

5

4.250

8614859

Plunger

7510A

1

8614877

Valve Kit

7511C

ATH-1691

1

4.226

8614947

Pump Pkg, Front Unit Oil, 1946-51
Like 8614994 w/pickup tube but no screen

7105X

see 8614994

1

$185.00

4.226

8614994

Pump Pkg, Front Unit Oil, 1946-51
Includes the pickup tube & a new screen

7105

OEM replacement

1

$210.00

4.226

8614996

Pump Pkg, Front Unit Oil, 1950-51

7105A

1950 8 cyl. only

0

8615026

Valve

7404B

3

8615039

Band, Front Unit Brake, 1954-56 Olds & 1955-56 Pontiac, for Slant Pan HM only

7616A

5+

$100.00
exch.

8615084

Lever

1

8615085

Spring

3

4.252

8615089

Spring, Rear Band Release, 1954-56

2

$3.00

8615039

Band, Front Unit Brake, 1946-55, All HM
except 1954-56 Olds & 1955-56 Pontiac

7616

0

$100.00
exch.

8615239

Clip, Retaining

4

4.216

8615263

Spring

3

8615556

4

8615568

Washer, Splined Inside

ATH-788

3

8615665

Valve

3

8615856

O'Ring, Regulator Plug, RHM, 1961-64

ATH-8057

Merit #SP-5014

20+

4.121

8616020

Spring, Driven Torus, JHM, 1956-58

3547L

20+

$1.00

8616034

Sealing Ring, Torus Cover Hub Oil, 56-64

DR-4

4161

ATH-232

2 per trans

7

8616048

Ring, Reverse Piston Inner Oil Sealing Ring
Early 1956 JHM only

4514

ATH-241

4

$4.00

8616052

Sealing Ring, Intermediate Shaft Oil, 1956-64

JR-2

4202

ATH-236

1

4.167

8616057

Snap Ring, Sprag Retaining, JHM, 1956-64

4215
4307

40+

8616060

Snap Ring, Rear Clutch Spring Retainer 56-64

4206

10+

4.121

8616062

Valve, Rear Main Driven Torus Check,
JHM, 1956-58

4125

25+

$3.00

4.129

8616087

Washer, Drive Gear Thrust, JHM, 1956-57

4113

(42678)

20+

4.129

8616091

Washer, Front Sun Gear, JHM, 1956-64

JW-1

4114

(42679)

.087-.091"

10+

$8.00

4.129

8616097

Washer, Front Sprag Race Thrust, 1956-64

JW-7

4301

.126-.136"
#42684

10+

$8.00

4.129

8616107

Washer, Front Drive Torus Thrust, 1956-60

JW-3

4178

10+

$8.00

8616132

Spring, Rear Clutch Release, JHM 1956 only

4209

8 per trans

40+

4.290

8616136

Pin, Park Brake Link Clevis, JHM, 1956-57

4818

5+

$2.00

4.294

8616143

Anchor, Parking Brake, 1956-57

4815

4

$20.00

4.265
4.290

8616150

Valve Body, Reverse Blocker, 1956-59

4601(A)

8616984

13

$10.00

8616164

Spacer, Anchor Pivot Shaft, 1956-59

4812

3

$2.00

8616171

Shaft, Anchor Pivot

4816

5

$8.00

4.129

8616173

Washer, Rear Clutch Hub Thrust, JHM

4203

16

$8.00

4.290

8616183

Lever Assembly, Parking Brake, JHM, 1956-57

4814

6

$10.00

8616184

Bracket, Parking Brake, JHM, 1956 only

4809

7

$10.00

8616185

Spacer, Parking Brake Bracket, 1956-57

4103

4

$1.00

4.295

8616186

Spring, Parking Brake Lever, JHM, 1956 only

4808

4

$6.00

4.129

8616189

Washer, Thrust, 1956-57

JW-2

4110

(42676)

.087-.091"

10+

$8.00

4.290

8616191

Spring, Reverse Blocker Piston, 1956-57

4605

6

$2.00

4.216

8616202

Valve, Pressure Regulator, 1956-64

4356

5+

$20.00

8616204

Spring, Pressure Regulator

4355

ATH-877

10+

$3.00

8616208

Sprag Clutch, Front, 1956-64 

4308

same 8618363

10+

$40.00

4.278

8616238

Lever & Shaft, Throttle Valve, 1956 up

4807

rep'l by 8617585

8

4.290

8616272

Piston, Reverse Blocker, 1956-57

4606

10+

$6.00

4.133

8616278

O'Ring

same 8617747

50+

8616279

O'Ring, Oil Control Valve, 1956

FO-361B

3290L

25+

8616280

O'Ring, Rear Pump Intake, 1956-58

3291L

10+

8616281

Pipe, Rear Oil Pump Intake, 1956

4734

5

$8.00

8616283

Pipe, Front Oil Pump Intake, 1956 up?

4733

rep'l by 8618465

5

$8.00

8616327

Spacer ?

1

8616352

Cover, Governor Body

JW-16

4705

7

$5.00

8616406

Spring, Torus Exhaust Valve, 1956-64

4180

2 req'd

10+

4.155

8616407

Valve, Front Torus Coupling, 1956-64

4181

2 req'd

10+

4.265

8616417

Plunger, Detent, 1956-57

4602

5+

$10.00

4.290

8616421

Pin

4607

25+

4.162

8616432

Bolt, Case Center Support, (Neutral Clutch Case) 1956-57

4225

10+

$5.00

4.129

8616433

Washer

JW-5

4200
4415

15+

$8.00

4.282

8616450

Washer, Case to Detent Plate, 1956-57

4805

40+

$2.00

8616465

Plug

4313

20+

$1.00

4.226

8616466

Spring, Oil Cooler B/P Check Valve, 1956-58

4316

25+

$1.00

8616467

Spring, Torus Feed Valve, 1956-64

4314

25+

$1.00

4.226

8616468

Valve,

4315

unk plate incl

2

8616480

O'Ring

JO-1C

3278SL

2

$4.00

8616481

Sealing Ring

4156

6

8616486

Bushing

4004

1

4.156

8616489

Sealing Ring, Front Torus Oil, 1956-64

4154

4

4.128

8616492

Snap Ring

4121

same 8618830

25+

$1.00

8616494

Seal, Oil Cooler Adapter, 1956-64

JG-2H

3297L

25+

8616496

Gasket, Oil Cooler Adapter, 1956-64

JG-2B

3298L

4.128

8616497

Sleeve, Oil Cooler Adapter, 1956-64

4760

6

$4.00

8616498

Gasket, Oil Cooler Adapter Bolt, 1956-64

3299L
3813L

25+

$1.00

8616501

Key, Governor Drive, 1956-58

4701

5+

4.128

8616503

Snap Ring, main Shaft, 1956-64

JP-3

4122

100+

$1.00

8616504

O'Ring, Output Shaft, 1956 only

FO-161A

3285L

50+

$1.00

4.129

8616526

Washer, Front Unit Torus Spacer, 1956

4175

2

$8.00

4.226

8616539

Pin

4318

25+

4.129

8616540

Washer, Front Sun Gear to Internal Gear 56-57

4111

ATH-345

(#42677)

10+

$8.00

8616557

Retainer, Detent Plunger, 1956up

4603

25+

$.50

8616558

Spring, Detent Plunger, 1956up

4604

5+

$3.00

8616561

Bracket ?

10+

4.129

8616570

Washer, Mainshaft Selective, 1956 only

4403

#1 .055-.059"

10+

$8.00

4.129

8616571

Washer, Mainshaft Selective, 1956 only

4403A

#2 .060-.064"

10+

$8.00

4.129

8616572

Washer, Mainshaft Selective, 1956 only

4403B

#3 .065-.069"

10+

$8.00

4.129

8616573

Washer, Mainshaft Selective, 1956 only

4403C

#4 .070-.074"

10+

$8.00

4.129

8616574

Washer, Mainshaft Selective, 1956 only

4403D

#5 .075-.079"

10+

$8.00

4.129

8616575

Washer, Mainshaft Selective, 1956 only

4403E

#6 .080-.084"

10+

$8.00

4.129

8616576

Washer, Mainshaft Selective, 1956 only

4403F

#7 .085-.089"

10+

$8.00

4.129

8616577

Washer, Mainshaft Selective, 1956 only

4403G

#8 .090-.094"

10+

$8.00

4.129

8616578

Washer, Mainshaft Selective, 1956 only

4403H

#9 .095-.099"

10+

$8.00

8616600

Spring, Front Oil Pump Priming (Outer) 56-64

4324

3

8616601

Spring, Front Oil Pump Priming (Inner) 56-64

4325

3

8616605

Key, Reverse Cone, 1956-60

4509

10+

4.166

8616606

Piston, Reverse Clutch, Early 1956 (Note 3)

4513

1

4.294

8616612

Adapter, Oil Cooler, 1956

4761

5

$10.00

8616636

Lip Seal, Accumulator Piston, 1956 only

3262L

3

4.225

8616638

Cover, Servo Body, 1956

4552

3

$10.00

8616644

Valve, Trimmer, 1956 Olds & Pont

4566

4

8616645

Plug, Trimmer Valve, 1956-E59

4568

3

4.129

8616646

Washer, Front Torus Thrust, 1956-64

4177

10+

$5.00

8616650

Spring, Trimmer Valve, 1956 Olds & Pont

4565

6

8616651

Gear, Speedometer Drive, 1956 to 1958 Olds

4407

3

$15.00

4.337

8616673

*Gear Assy, Speedometer Drive, 1956-58, early 1959
Note: *All assemblies have a 1 7/16" hex
and from a 32T to 38T steel driven gear

33T

1

$35.00

4.337

8616674

*Gear Assy, Speedometer Drive, 1956-58, early 1959

34T

2

$35.00

4.337

8616676

*Gear Assy, Speedometer Drive, 1956-58, early 1959

36T

1

$35.00

4.337

8616678

*Gear Assy, Speedometer Drive, 1956-58, early 1959

38T

3

$35.00

4.233

8616833

Spring, Accumulator Piston, Inner, 1956 Olds

4557

6

$4.00

4.233

8616834

Spring, Accumulator Piston, Outer, 56 Olds

4555

AM

4

$5.00

4.228

8616836

Piston, Accumulator, 1957?

4554A

1

4.193

8616843

Gear, Reverse Internal, 1956-58

4511

4.233

8616851

Spring, Accumulator Piston, Outer,
1956-57, Cadillac & Pontiac

4555B

2

$5.00

8616878

Sealing Ring, Servo Piston

SR-5A

24718

ATH-8047

3.250 Alum BJ

5

$3.00

4.290

8616888

Link, Parking Brake, 1956 & 57

4819

6

$4.00

8616889

Bolt (Stud), Main Torus Cover, 1956-64, 

4107

25+

8616916

Snap Ring Kit (10)

ATH-368

4+

8616928

Spring Kit, Front Oil Pump Priming, 1956-64

K-4323

1

8616940

Washer, Splined Inside

1

8616949

Kit, Oil Control Valve Body Repair, 1956

K-4600

2

8616956

Spacer Kit?

5

$10.00

4.265
4.290

8616984

Valve Body, Reverse Blocker, 1956-59

8616150

1

$10.00

8617071

Lever & Shaft, Inside Throttle Valve, 1955-56

7624A

see 8617136

(1)

$20.00

8617119

O'Ring,

6

$1.00

8617122

Bearing?

1

8617136

Valve, Retainer Pkg, Manual, 1952-54
Includes a 8609591, Lever & Shaft

casting 8617072

1

$35.00

4.129

8617148

Washer, Steel Backing, 1948-56

HW-16

8608761

$8.00

4.129

8617342

Washer, Rear Unit Clutch Hub, .090"

7206

same 8609497

12

$10.00

4.166

8617371

Piston, Reverse Clutch, Mid 1956

4513A

discontinued
use 4513B

1

4.166

8617372

Piston, Reverse Clutch, L1956-58

4513B

1+

8617448

Race, Front Sprag Inner, 1956-57

4300

With 4 Lugs

2+

$15.00

4.278

8617585

Lever & Shaft, Throttle Valve, 1956 to 59

4807A

replaces 8616238

10

$8.00

4.180

8617627

Retainer, Sprag Clutch, 1956-64

4214

7

$10.00

8617666

Sprag Clutch, Rear

4212

same 8616213 same 8618372

1

4.133

8617747

O'Ring, 1956-57

JG-3C

same 8616278

10+

4.129

8617821

Washer, Mainshaft Selective, 1957-64

JW-8

4405

#1 .055-.059"

10+

$8.00

4.129

8617822

Washer, Mainshaft Selective, 1957-64

JW-9

4405A

#2 .060-.064"

10+

$8.00

4.129

8617823

Washer, Mainshaft Selective, 1957-64

JW-10

4405B

#3 .065-.069"

10+

$8.00

4.129

8617824

Washer, Mainshaft Selective, 1957-64

JW-11

4405C

#4 .070-.074"

10+

$8.00

4.129

8617825

Washer, Mainshaft Selective, 1957-64

JW-12

4405D

#5 .075-.079"

10+

$8.00

4.129

8617826

Washer, Mainshaft Selective, 1957-64

JW-13

4405E

#6 .080-.084"

10+

$8.00

4.129

8617827

Washer, Mainshaft Selective, 1957-64

JW-14

4405F

#7 .085-.089"

10+

$8.00

4.129

8617828

Washer, Mainshaft Selective, 1957-64

JW-15

4405G

#8 .090-.094"

10+

$8.00

4.129

8617829

Washer, Mainshaft Selective, 1957-64

JW-16

4405H

#9 .095-.099"

10+

$8.00

8617840

4.225

8617893

Cover, Servo Body, 1957 to E1959

4552A

1

$10.00

8617895

Spring, Trimmer Valve, 1957 Olds

4565A

8617896

Valve, Trimmer, 1957-58 Olds

4566A

4.129

8617938

Washer, Torus Spacer, 1957

4175A

20+

$6.00

4.129

8617949

Washer, Backing Retainer Thrust, 1958-64

4426

8617953

Snap Ring, Rear Center Gear, 1956-64

JP-7

4419A

8617969

Spring,

6

8617983

Valve, Trimmer, 57-60 Cad, 57-58 Pont

4566D

1

8617984

Plug, Trimmer Valve, 1959-60

4568A

1

8617988

Spring,

?

1

8618030

Snap Ring

1

8618033

Race, Front Sprag Inner, 1957-64

JX-8

4300A

Splined

25+

$15.00

8618181

Seal, Front Pump, Metal Clad 1956-57 JHM
(Front Housing Seal)

JO-12

4101

AT-6898N

Nat'l #470565 .375" T
2.375"ID X 3.125"OD

(10)

4.265

8618192

Valve,

2

4.222

8618223

Pipe, Rear Oil Pump Intake, 1957-58

4734B

1

$8.00

4.158

8618319

Spacer, Front Internal Gear, 1958-64

JW-17

4104N

#1 .045"-.047"

$8.00

4.158

8618320

Spacer, Front Internal Gear, 1958-64

JW-18

4104P

#2 .058"-.060"

$8.00

4.158

8618321

Spacer, Front Internal Gear, 1958-64

JW-19

4104R

#3 .071"-.073"

$8.00

4.158

8618322

Spacer, Front Internal Gear, 1958-64

JW-20

4104S

#4 .084"-.086"

$8.00

4.158

8618323

Spacer, Front Internal Gear, 1958-64

JW-21

4104T

#5 .097"-.099"

$8.00

4.158

8618324

Spacer, Front Internal Gear, 1958-64

JW-22

4104U

#6 .110"-.112"

$8.00

4.158

8618325

Spacer, Front Internal Gear, 1958-64

JW-23

4104V

#7 .123"-.125"

$8.00

4.158

8618326

Spacer, Front Internal Gear, 1958-64

JW-24

4104W

#8 .136"-.138"

$8.00

4.158

8618327

Spacer, Front Internal Gear, 1958-64

JW-25

4104X

#9 .149"-.151"

$8.00

4.158

8618328

Spacer, Front Internal Gear, 1958-64

JW-26

4104Y

#10 .162"-.164"

$8.00

4.158

8618329

Spacer, Front Internal Gear, 1958-64

JW-27

4104Z

#11 .175"-.177"

$8.00

8618422

Lever, Parking Brake, JHM, 1958 & 59

4814A

1

$20.00

4.294

8618426

Anchor, Parking Brake, 1958-64

4815A

2

$20.00

8618427

Pin, Clevis, 1958

4816A

3

$2.00

8618428

Pin, Clevis, 1958-60

4818A

3

$2.00

8618465

Pipe, Front Oil Pump Intake, 1956-59

4733B

replaces 8616283

5

$8.00

8618479

Seal, Front Pump, Metal Clad 1958-64 JHM
(Front Housing Seal)

JO-13

4101A

AT-6898NA

8618697

Seal, Front Pump, Metal Clad 1946-62 HM

HO-5

7103

AT-6850S

see 8613005

4.193

8618737

Gear, Reverse Internal, 1959-64

4511A

4.128

8618830

Snap Ring, Intermediate Shaft, 1956-64

JP-1

4121A

20+

$1.00

8618846

Spring,

4130

11

$4.00

8619032

Band, Rear Unit Brake, 1952-62 All HM

7616A

0

$100.00
exch.

8619097

Valve,

2

4.293

8619104

Detent Roller & Spring, Manual, 1960-64

4823

5

$22.00

4.166

8619239

Piston, Reverse Clutch, L1959-64  (Note 5)

4513D

1+

8619242

Piston, Reverse Blocker, 1959 JHM

4606A

1

4.294

8619244

Adapter Plate, Oil Cooler, 1960 Olds

4761G

2

$18.00

4.286

8619324

Lever,

1

8619374

Seal,

3996L

1

4.293

8619377

Bolt,

1

4.123

8619549

Plate,

5

4.226

8619563

O'Ring, Front Pump to Case, 1961-64 RHM

3676

Round O'Ring
see 8622033

8

4.216

8619567

1

8619680

Snap Ring, 1956-64

$1.00

8619704

Seal, Governor Body

4552
3694

ATH-8100

3

$3.00

4.228

8619713

Piston, Lower Accumulator, RHM 1961-64

1

$8.00

4.233

8619717

Spring, Lower Accumulator, 1961 RHM P & PE

(24188)

9

$4.00

4.233

8619718

Spring, Accumulator, Upper, 1961-64 RHM
1961 to 1964 Except PA

24187

8

$4.00

4.233

8619719

Spring, Servo Release

$4.00

4.

8619722

Seal, Center Support

3707

ATH-8075

3 req'd

30+

$1.00

8619744

Seal, Throttle Shaft (Cupped)

3688L

50+

$4.00

8619764

Retainer ?

1

$3.00

4.265

8619796

Neutral Clutch By-Pass, 1961-64 RHM

1

$3.00

4.223

8619832

Seal, Pipe Assy. to Case, 1961-64 RHM

3705L

3

4.223

8619836

O'Ring, Oil Screen, 1961-64 RHM

3362L

3

4.129

8619845

Washer

14150

1

4.129

8619846

Washer

14150A

1

4.129

8619847

Washer

14150B

4

4.129

8619848

Washer

14150C

4.129

8619849

Washer, Front Unit Selective, .082"

14150H

1

4.129

8619850

14150E

4.2

8619867

Seal, Manual Shaft, 1961- RHM

24814

8

4.128

8619872

Snap Ring, Servo Piston Pin

24079
24520

10

50

4.234

8619873

1

$5.00

4.*5*

8619946

Bearing

4111A

5

$8.00

8619948

Gasket

TS-217

5

$1.00

4.129

8619969

Bearing Set

K4909

4

$12.00

8620300

Bushing & Sleeve

ATH-8034

8620303

ATH-8105

4.128

8620305

Snap Ring, Output Shaft Bearing Retainer,

24521

ATH-8096

4.282

8620306

Valve,

3

8620307

4.318

8620308

Gasket, Extension Housing Inspection

3677

ATH-8103

4.155

8620313

8620326

Cooler Control

3704L

4.343

8620353

Gear, Speedometer Drive, 1961-64 RHM

5

4.155

8620365

Screw, Coupling Exhaust Valve Plate, 1961-64 RHM

8620367

Gasket, Torus Valve, 1961-64 RHM, 2 req'd

3677L

ATH-8107

8620369

ATH-8076

8620389

4.265

8620398

Valve, Front Clutch By-Pass

24705

10+

4.127

8620402

Sealing Ring, Front Coupling Cover Shaft

14156

ATH-8039

10+

8620423

8620448

4.216

8620472

Valve,

8620522

14516

8620587

8620598

8620599

5

8620625

8620690

Washer

8620697

Washer, Front Unit Selective, .028"

14150

ATH-8064

8620698

Washer, Front Unit Selective, .037"

14150A

ATH-8065

8620699

Washer, Front Unit Selective, .046"

14150C

ATH-8066

8620700

Washer, Front Unit Selective, .055"

14150E

ATH-8067

4.233

8620719

Spring, Accumulator, Upper, 1961-64 RHM

(24187)

0

$4.00

8620720

8620755

8620

8620

8620

8620

8620

8620

8620783

Oil Pipe Feed Assembly

SX-8

24802

ATH-8126

10+

8620

8620

8620

8620

8620

8620

8620

8620

8620

4.127

8620809

Sealing Ring, Front Case Cover,

14510
22550A

ATH-8038

8620812

Sealing Ring

24615

4.127

8620813

Sealing Ring

SR-3

24175

8620814

Sealing Ring

14420

8620817

Sealing Ring

SR-4

14715

ATH-8044

4.248

8620852

Screen,

8620866

Bushing

ATH-8061

8620891

Valve

8620893

Washer, Copper

8620909

Washer (Bearing)

SW-1

24110

ATH-8068

4.156

8620910

Washer (Bearing)

SW-2

24114

ATH-8069

8620912

Washer (Bearing), Torus to Rear Carrier

SW-3

24118

4.159

8620915

Washer (Bearing)

SW-4

24214

ATH-8078

8620916

Washer (Bearing)

SW-5

24216

8620919

Washer (Bearing)

ATH-8087

8620920

Washer (Bearing)

SW-8

24514

ATH-8098

4.408

8620923

Washer (Bearing)

SW-7

24610

8620926

SO-3

ATH-8016

4.158

8620933

Washer (Bearing)

8620937

SO-5

K14900-1

ATH-8017

8620944

Washer

24207

ATH-8031

4.265

8620976

Valve Kit

8620

8621028

Sealing Ring

14168

ATH-8042

8621047

Spring

14259

8621048

Washer

8621057

Washer

8621059

Washer

4-189

8621063

Spring, Reverse Clutch Release, 1961-63 F-85

14409

8621065

Snap Ring

8621075

Sealing Ring

ATH-8046

8621077

Washer,

8621085

Washer,

4.343

8621090

Gear, Speedometer Drive

7

8621113

Sealing Ring, Alum

14615

ATH-8048

8621133

Spring

8621269

Washer

8621276

Bushing,

14007

ATH-8095

4.128

8621277

Spring,

4.129

8621288

Washer

8621331

Snap Ring

8621391

Snap Ring

8621397

Sealing Ring

8621416

8621418

8621507

O'Ring, Front Pump to Case, 1961-64 RHM

SO-6

3676

ATH-8059

use 8622033

4.129

8621512

Washer, Fiber

ATH-8082

8621707

O'Ring

RO-2J

3717

4.282

8621766

8621767

O'ring

3302

ATH-8101

4.265

8621803

Valve

4.223

8621806

Spring,

6

4.127

8621869

Sealing Ring, Governor

24615

ATH-8049

8621870

Sealing Ring

ATH-8050

8621905

Spring

8621944

Washer (Bearing)

SW-9

24514

ATH-8099

4.228

8621977

Piston w/Sealing Ring, Alum

24712

4.216

8622026

Seal,

3723

ATH-8058

4.233

8622031

O'Ring, Oil Pump Inlet

3705

8622032

O'Ring, Strainer

3362L

8622033

O'Ring, Front Pump to Case, 1961-64 RHM

SO-6

3676SL

ATH-8059

same as
8621507

8622037

Plug

4.226

8622038

Spring

8622048

Valve,

4.282

8622062

Pin

8622077

O'Ring

3544

4.265

8622163

Valve

8622171

Spring,

4.223

8622246

Spring, Lower Accumulator, 1962-64 RHM
(1962 PA & PB)(1963-64 PC & PG)

(24188)

15

$4.00

4.223

8622247

Spring, Lower Accumulator, 1961-64 RHM

24188

18

$4.00

8622362

Bolt,

4.187
4.129

8622718

Washer, 1961-64 RHM

SW-6

24505

8622913

Washer/Bearing

4.128

8622918

Snap Ring Kit

4.128

8622919

Snap Ring Kit

4.153

8622943

Bushing, Front Internal Gear, 1961-63 F85

SB-11

14002

ATH-8146

4.153

8622944

Bushing, Front Sun Gear, Rear, F85

SB-6

14009

ATH-8143

4.153

8622945

Bushing, Front Sun Gear, Front, F85

SB-5

14008

ATH-8142

4.153

8622946

Bushing, Mainshaft, 1961-64 RHM & F85

SB-3

14007

ATH-8095

4.153

8622947

Bushing, Input Shaft, 1961-64 RHM & F85

SB-12

24000

ATH-8141

4.153

8622948

Bushing, Front Unit Sun Gear, 1961-64 RHM

SB-4

24003

4.158

8622949

Bushing, Front Internal Gear, 1961-64 RHM

SB-2

24002

8622

4.275

8623056

Seal, Sm Metal Clad

SG-21A

38511

4.164

8623103

Springs, M40, 1965-69

4.164

8623104

Plate

4.167

8623120

Snap Ring

ATT-8145A

4.229

8623131

Sealing Ring, Front Servo Piston, Alum

34310

ATT-8545

4.164

8623145

Spring,

8623148

Sealing Ring,

34406

ATT-8547

40+

8623180

34501

ATT-8580

8623211

34401

ATT-8579

4.318

8623216

JO-56

ATT-8522

8623232

4.256

8623263

Gasket, Governor Cover

JG-51K

3914

ATT-8536

4

4.176

8623271

Washer, Output Shaft

ATT-8581

4.176

8623272

Washer, Output Shaft

ATT-8185A

4.176

8623273
8625403

Washer, Output Shaft

ATT-8581B

4.176

8623274
8625404

Washer, Output Shaft

ATT-8581C

4.176

8623275

Washer, Output Shaft

ATT-8581D

4.176

8623276

Washer, Output Shaft

ATT-8581E

4.169

8623300

Washer, Oil Pump Cover, .0

34208

ATT-8576

4.169

8623301

Washer, Oil Pump Cover, .071"

34208A

ATT-8576A

4.169

8623302

Washer, Oil Pump Cover, .0

JW-50

34208B

ATT-8576B

4.169

8623303

Washer, Oil Pump Cover, .0

JW-51

34208C

ATT-8576C

4.169

8623304

Washer, Oil Pump Cover, .

JW-52

34208D

ATT-8576D

4.169

8623305

Washer, Oil Pump Cover, .

JW-53

34208E

ATT-8576E

4.169

8623306

Washer, Oil Pump Cover, .

JW-54

34308F

ATT-8576F

8623

4.343

8623313

Gear, Speedometer Drive, Yellow - 18T

1

4.343

8623314

Gear, Speedometer Drive,

1

8623425

Pipe,

4.242

8623430

O'Ring, Rear Servo, Sq

JO-54A

3921

ATT-8567

4.162

8623498

Stud, Threaded

8623508

Snap Ring, Servo Piston Retainer, Sm

8623

8623

8623

8623

4.241

8623657

Shaft,

1

4.241

8623658

Shaft,

1

4.241

8623659

Shaft,

1

8623671

Sealing Ring, Reverse Servo, Inner

34710A

ATT-8559

8623672

Sealing Ring, Reverse Servo, Outer, Alum

JR-57A

34710B

ATT-8560

8623714

Shaft, Shift

8623741

Gasket, Alum

JG-51D

ATT-8534

8623920

Washer/Bearing Kit

8623921

Washer/Bearing Kit

8623922

Washer/Bearing Kit

8623924

Gear, Plastic

K34411

8623927

Bolt,

4.256

8623940

Bushing, Pump Body

CB-4

8005

ATT-629

8623941

Bushing,

JB-50

34006

ATT-8575

4.256

8623943

Bushing, Output Shaft, 1964 up TH-400

JB-53

34004

ATT-8572

4.256

8623944

Bushing, Sun Gear Shaft & Stator Shaft, 1964 up
TH-400 & 425

JB-52

34002

ATT-8570

8623945

Washer, Cupped

34425

2

8623951

Gear Kit

8623958

Bushing,

34002A

ATT-8571

8623979

Snap Ring Kit

8623983

Valve

8624034

Valve,

* Cross Reference for Bushings *
H = Hudson
K = Kaiser
N = Nash
*McQ = McQuay Norris

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