1982 Checker Marathon Automatic Transmission Parts

Engine:

Showing parts for every engine. Select an engine to see only what fits.

This page lists 104 automatic transmission parts for the 1982 Checker Marathon, across 32 part types, covering all 4 engine options (3.8L 229cid V6, 4.4L 267cid V8, 5.0L 305cid V8 and 5.7L 350cid V8 DIESEL). Every part shows its brand, manufacturer part number and fitment notes.

On the 1982 Checker Marathon, the automatic transmission covers the automatic gearbox and its supporting cast — filters, coolers, solenoids, mounts and torque-converter parts. 23 parts of the 104 listed are Rebuild Kit (9 parts), Extension Housing Seal (7 parts) and Fluid Pump Seal (7 parts). The other 29 part types cover the remaining 81 parts.

Band

Brand Part Number Markets Notes Buy
ATP Fits: 3.8L 229cid V6, 5.7L 350cid V8 DIESEL JX58
🇺🇸 US 🇨🇦 CA
Front
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ATP Fits: 3.8L 229cid V6, 5.7L 350cid V8 DIESEL JX60
🇺🇸 US 🇨🇦 CA
Reverse
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PIONEER Fits: 3.8L 229cid V6, 5.7L 350cid V8 DIESEL 767043
🇺🇸 US 🇨🇦 CA
Front
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PIONEER Fits: 3.8L 229cid V6, 5.7L 350cid V8 DIESEL 767017
🇺🇸 US 🇨🇦 CA
Reverse
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This table covers the apply bands inside the automatic transmission.

Bushing

Brand Part Number Markets Notes Buy
PIONEER Popular Fits: 3.8L 229cid V6, 5.7L 350cid V8 DIESEL 755043
🇺🇸 US 🇨🇦 CA
converter HousingFront Pump
Fitment notes — PIONEER 755043
converter HousingFront PumpBabbit
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ATP Fits: 3.8L 229cid V6, 5.7L 350cid V8 DIESEL CB4
🇺🇸 US 🇨🇦 CA
converter Housing - Front Pump - Babbit
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ATP Fits: 3.8L 229cid V6, 5.7L 350cid V8 DIESEL JB50
🇺🇸 US 🇨🇦 CA
Position: Case - Rear
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PIONEER Fits: 3.8L 229cid V6, 5.7L 350cid V8 DIESEL 755070
🇺🇸 US 🇨🇦 CA
RearCase
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PIONEER Fits: 3.8L 229cid V6, 5.7L 350cid V8 DIESEL 755072
🇺🇸 US 🇨🇦 CA
Length: 1.00"Outer Diameter: 1.995"
Fitment notes — PIONEER 755072
Length: 1.00"Outer Diameter: 1.995"Extension Housing
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This table covers the bushings in this assembly. Typical signs include a clunk over bumps, or a torn or walked-out bushing you can see. Press the new bushing square. A cocked bushing will tear in a few thousand miles.

Bushing Kit

Brand Part Number Markets Notes Buy
DURA-BOND Fits: 3.8L 229cid V6, 5.7L 350cid V8 DIESEL TK54
🇺🇸 US 🇨🇦 CA
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DURA-BOND Fits: 3.8L 229cid V6, 5.7L 350cid V8 DIESEL TK54HP
🇺🇸 US 🇨🇦 CA
High Performance Kit
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This table covers the Bushing kits.

Center Support Bushing

Brand Part Number Markets Notes Buy
DURA-BOND Fits: 3.8L 229cid V6, 5.7L 350cid V8 DIESEL 02101
🇺🇸 US 🇨🇦 CA
Center Support
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This table covers the Center Support bushings. Typical signs include a clunk over bumps, or a torn or walked-out bushing you can see. Press the new bushing square. A cocked bushing will tear in a few thousand miles.

Clutch Pack Piston Dam / Seal

Brand Part Number Markets Notes Buy
ATP Fits: 3.8L 229cid V6, 5.7L 350cid V8 DIESEL JO52
🇺🇸 US 🇨🇦 CA
Direct Clutch Piston Set
Fitment notes — ATP JO52
Direct Clutch Piston Set
Kit - Lip sealPosition: Forward & Direct Clutch - Inner/Center/Outer
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PIONEER Fits: 3.8L 229cid V6, 5.7L 350cid V8 DIESEL 758002
🇺🇸 US 🇨🇦 CA
Kit
Fitment notes — PIONEER 758002
Kit
Lip sealforward & direct clutchinner/center/outer
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This table covers the seals at the Clutch Pack Piston Dam. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again.

Clutch Plate Pack

Friction Plate Pack

Brand Part Number Markets Notes Buy
RAYBESTOS POWERTRAIN Popular Fits: 3.8L 229cid V6, 5.7L 350cid V8 DIESEL RCP96037
🇺🇸 US 🇨🇦 CA
Friction And Steel Combo Module
Fitment notes — RAYBESTOS POWERTRAIN RCP96037
Friction And Steel Combo Module
Clutch Pack Module With 10 Forward, Direct Plates
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RAYBESTOS POWERTRAIN Fits: 3.8L 229cid V6, 5.7L 350cid V8 DIESEL RCP96013
🇺🇸 US 🇨🇦 CA
Clutch Pack Module With 11 Forward, Direct Plates
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RAYBESTOS POWERTRAIN Fits: 3.8L 229cid V6, 5.7L 350cid V8 DIESEL RCPBP03
🇺🇸 US 🇨🇦 CA
Blue Plate Kit
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Steel Plate Pack

Brand Part Number Markets Notes Buy
RAYBESTOS POWERTRAIN Fits: 3.8L 229cid V6, 5.7L 350cid V8 DIESEL 000356
🇺🇸 US 🇨🇦 CA
Steel Module Without Waved
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RAYBESTOS POWERTRAIN Fits: 3.8L 229cid V6, 5.7L 350cid V8 DIESEL 000357
🇺🇸 US 🇨🇦 CA
Steel Module With Waved
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This table covers the clutch-plate packs inside the transmission or transfer case.

Detent Cable Seal

Brand Part Number Markets Notes Buy
ATP Fits: 3.8L 229cid V6, 5.7L 350cid V8 DIESEL SO37
🇺🇸 US 🇨🇦 CA
Multi Lip sealSeal - Detent Control Cable - Top Hat Boot - Throttle Valve Cable
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PIONEER Fits: 3.8L 229cid V6, 5.7L 350cid V8 DIESEL 760013
🇺🇸 US 🇨🇦 CA
Multi Lip sealSeal
Fitment notes — PIONEER 760013
Multi Lip sealSealDetent Control CableTop Hat BootThrottle Valve Cable
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This table covers the seals at the Detent Cable. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again.

Dipstick / Fluid Filler Tube

Brand Part Number Markets Notes Buy
ATP Fits: 3.8L 229cid V6, 5.7L 350cid V8 DIESEL PTS1021
🇺🇸 US 🇨🇦 CA
Dipstick Only
Fitment notes — ATP PTS1021
Dipstick Only
KitFiller Tube & Dipstick
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PIONEER Fits: 3.8L 229cid V6, 5.7L 350cid V8 DIESEL 768023
🇺🇸 US 🇨🇦 CA
KitFiller Tube & Dipstick
Fitment notes — PIONEER 768023
KitFiller Tube & DipstickLength: 29"
Trans. code THM350
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This table covers the Dipstick / Fluid Filler tubes.

Dipstick / Fluid Filler Tube Seal

Brand Part Number Markets Notes Buy
ATP Fits: 3.8L 229cid V6, 5.7L 350cid V8 DIESEL JO16
🇺🇸 US 🇨🇦 CA
Intake Filler Tube To CaseElectrical Connector
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PIONEER Fits: 3.8L 229cid V6, 5.7L 350cid V8 DIESEL 762008
🇺🇸 US 🇨🇦 CA
Intake Filler Tube To CaseElectrical Connector
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This table covers the seals at the Dipstick / Fluid Filler Tube. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again.

Extension Housing Gasket

Brand Part Number Markets Notes Buy
ATP Fits: 3.8L 229cid V6, 5.7L 350cid V8 DIESEL JG54
🇺🇸 US 🇨🇦 CA
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ATP Fits: 3.8L 229cid V6, 5.7L 350cid V8 DIESEL GG1080
🇺🇸 US 🇨🇦 CA
Position: Extension Housing to Transfer Case or adapter Housing
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PIONEER Fits: 3.8L 229cid V6, 5.7L 350cid V8 DIESEL 749090
🇺🇸 US 🇨🇦 CA
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PIONEER Fits: 3.8L 229cid V6, 5.7L 350cid V8 DIESEL 749289
🇺🇸 US 🇨🇦 CA
Extension Housing to Transfer Case or adapter Housing
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This table covers the gaskets that seal the Extension Housing. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for.

Extension Housing Seal

Brand Part Number Markets Notes Buy
NATIONAL Popular Fits: 3.8L 229cid V6, 5.7L 350cid V8 DIESEL 9449
🇺🇸 US 🇨🇦 CA
General Motors trans.
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SCHAEFFLER Popular Fits: 3.8L 229cid V6, 5.7L 350cid V8 DIESEL SS2960
🇺🇸 US 🇨🇦 CA
Type of construction: FmsaMetal, Spring, Auxiliary Lip
Fitment notes — SCHAEFFLER SS2960
Type of construction: FmsaMetal, Spring, Auxiliary Lip
with 1.886 In Shaft
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ATP Fits: 3.8L 229cid V6, 5.7L 350cid V8 DIESEL JO57
🇺🇸 US 🇨🇦 CA
without BootOuter Diameter: 2.9375"
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BCA Fits: 3.8L 229cid V6, 5.7L 350cid V8 DIESEL NS9449
🇺🇸 US 🇨🇦 CA
External Markings: 1.890 X 2.700 X 0.582
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PIONEER Fits: 3.8L 229cid V6, 5.7L 350cid V8 DIESEL 759023
🇺🇸 US 🇨🇦 CA
without BootOuter Diameter: 2.9375"
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WJB / INMOTION PARTS Fits: 3.8L 229cid V6, 5.7L 350cid V8 DIESEL WS9449
🇺🇸 US 🇨🇦 CA
Width (In): 0.58199999999999996 In
Fitment notes — WJB / INMOTION PARTS WS9449
Width (In): 0.58199999999999996 In
General Motors trans.THM400 Transmission
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WJB / INMOTION PARTS Fits: 3.8L 229cid V6, 5.7L 350cid V8 DIESEL WS5208
🇺🇸 US 🇨🇦 CA
Material: NitrileWidth (In): 1 in
Fitment notes — WJB / INMOTION PARTS WS5208
Material: NitrileWidth (In): 1 in
General Motors trans.with Extension Housing Diameter 1.9945 INTHM400 Transmission
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This table covers the seals at the Extension Housing. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again.

Filter

Economy

Brand Part Number Markets Notes Buy
ATP Popular Fits: 3.8L 229cid V6, 5.7L 350cid V8 DIESEL TF29
🇺🇸 US 🇨🇦 CA
OE Replacement
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Standard Replacement

Brand Part Number Markets Notes Buy
ACDELCO Fits: 3.8L 229cid V6, 5.7L 350cid V8 DIESEL TF231
🇺🇸 US 🇨🇦 CA
GoldLength: 12 in
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ATP Fits: 3.8L 229cid V6, 5.7L 350cid V8 DIESEL B29
🇺🇸 US 🇨🇦 CA
Includes: (1) Gasket, (1) ScreenPremium Replacement
Fitment notes — ATP B29
Includes: (1) Gasket, (1) ScreenPremium ReplacementDacron media filterWith 3rd Hand Gasket
25"
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PIONEER Fits: 3.8L 229cid V6, 5.7L 350cid V8 DIESEL 745042
🇺🇸 US 🇨🇦 CA
Media: Brass Media Filter
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RAYBESTOS POWERTRAIN Fits: 3.8L 229cid V6, 5.7L 350cid V8 DIESEL 515533
🇺🇸 US 🇨🇦 CA
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This table covers the replacement filters for this application — the table heading and notes say which circuit. Typical signs include restricted flow — long cranking, weak airflow, or dirty fluid after a short interval. Seat the new filter so it cannot bypass, and use the grade the notes call for.

Fluid Pan Gasket

Brand Part Number Markets Notes Buy
FEL-PRO Popular Fits: 3.8L 229cid V6, 5.7L 350cid V8 DIESEL TOS18621
🇺🇸 US 🇨🇦 CA
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MAHLE / CLEVITE Popular Fits: 3.8L 229cid V6, 5.7L 350cid V8 DIESEL W39341TC
🇺🇸 US 🇨🇦 CA
Cork with Metal CarrierAutomatic Transmission Oil Pan Gasket
Fitment notes — MAHLE / CLEVITE W39341TC
Cork with Metal CarrierAutomatic Transmission Oil Pan Gasket
with 13 Bolt Holes
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ATP Fits: 3.8L 229cid V6, 5.7L 350cid V8 DIESEL JG50
🇺🇸 US 🇨🇦 CA
Fiber
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MAHLE / CLEVITE Fits: 3.8L 229cid V6, 5.7L 350cid V8 DIESEL W39341
🇺🇸 US 🇨🇦 CA
Cork-RubberAutomatic Transmission Oil Pan Gasket
Fitment notes — MAHLE / CLEVITE W39341
Cork-RubberAutomatic Transmission Oil Pan Gasket
with 13 Bolt Holes
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PIONEER Fits: 3.8L 229cid V6, 5.7L 350cid V8 DIESEL 749020
🇺🇸 US 🇨🇦 CA
Fiber
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VICTOR REINZ Fits: 3.8L 229cid V6, 5.7L 350cid V8 DIESEL 711493800
🇺🇸 US 🇨🇦 CA
13 Bolt
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This table covers the gaskets that seal the Fluid Pan. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for.

Fluid Pump Bushing

Brand Part Number Markets Notes Buy
DURA-BOND Fits: 3.8L 229cid V6, 5.7L 350cid V8 DIESEL 44034
🇺🇸 US 🇨🇦 CA
Pump body
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DURA-BOND Fits: 3.8L 229cid V6, 5.7L 350cid V8 DIESEL 44034TG
🇺🇸 US 🇨🇦 CA
Dry Film Lubricated
Fitment notes — DURA-BOND 44034TG
Dry Film Lubricated
Pump BodyDry Film Lubricant
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This table covers the Fluid Pump bushings. Typical signs include a clunk over bumps, or a torn or walked-out bushing you can see. Press the new bushing square. A cocked bushing will tear in a few thousand miles.

Fluid Pump Gasket

Brand Part Number Markets Notes Buy
ATP Fits: 3.8L 229cid V6, 5.7L 350cid V8 DIESEL JG53
🇺🇸 US 🇨🇦 CA
Position: Front Pump to Case
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PIONEER Fits: 3.8L 229cid V6, 5.7L 350cid V8 DIESEL 749075
🇺🇸 US 🇨🇦 CA
front pump to case
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This table covers the gaskets that seal the Fluid Pump. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for.

Fluid Pump O-Ring

Brand Part Number Markets Notes Buy
ATP Fits: 3.8L 229cid V6, 5.7L 350cid V8 DIESEL SO21
🇺🇸 US 🇨🇦 CA
OuterHigh Clutch Piston Set
Fitment notes — ATP SO21
OuterHigh Clutch Piston SetLCS - Extension Housing To Case
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PIONEER Fits: 3.8L 229cid V6, 5.7L 350cid V8 DIESEL 762007
🇺🇸 US 🇨🇦 CA
OuterHigh Clutch Piston Set
Fitment notes — PIONEER 762007
OuterHigh Clutch Piston SetLCSExtension Housing To Case
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This table covers the Fluid Pump O-rings. Typical signs include a seep at a fitting or a housing that weeps after a service. Lube the new O-ring with the fluid it will see, and do not roll it into the groove.

Fluid Pump Repair Sleeve

Brand Part Number Markets Notes Buy
BCA Fits: 3.8L 229cid V6, 5.7L 350cid V8 DIESEL NS88187
🇺🇸 US 🇨🇦 CA
Frontwith THM400 Transmission Code
Fitment notes — BCA NS88187
Frontwith THM400 Transmission CodeGeneral Motors Transmission
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NATIONAL Fits: 3.8L 229cid V6, 5.7L 350cid V8 DIESEL 99187
🇺🇸 US 🇨🇦 CA
General Motors trans.
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WJB / INMOTION PARTS Fits: 3.8L 229cid V6, 5.7L 350cid V8 DIESEL WS99187
🇺🇸 US 🇨🇦 CA
FrontGeneral Motors trans.
Fitment notes — WJB / INMOTION PARTS WS99187
FrontGeneral Motors trans.THM400 Transmission
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This table covers the precision wear sleeves used to restore a transmission pump seal surface.

Fluid Pump Seal

Brand Part Number Markets Notes Buy
NATIONAL Popular Fits: 3.8L 229cid V6, 5.7L 350cid V8 DIESEL 6712NA
🇺🇸 US 🇨🇦 CA
FrontGeneral Motors trans.
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WJB / INMOTION PARTS Popular Fits: 3.8L 229cid V6, 5.7L 350cid V8 DIESEL WS6712NA
🇺🇸 US 🇨🇦 CA
FrontGeneral Motors trans.
Fitment notes — WJB / INMOTION PARTS WS6712NA
FrontGeneral Motors trans.THM400 Transmission
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ATP Fits: 3.8L 229cid V6, 5.7L 350cid V8 DIESEL CO4
🇺🇸 US 🇨🇦 CA
FrontOuter Diameter: 3"
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BCA Fits: 3.8L 229cid V6, 5.7L 350cid V8 DIESEL NS6712NA
🇺🇸 US 🇨🇦 CA
Front
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PIONEER Fits: 3.8L 229cid V6, 5.7L 350cid V8 DIESEL 759021
🇺🇸 US 🇨🇦 CA
FrontOuter Diameter: 3"
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SCHAEFFLER Fits: 3.8L 229cid V6, 5.7L 350cid V8 DIESEL SS2910
🇺🇸 US 🇨🇦 CA
Front2.76" O.D. X 0.38" Width
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SKF Fits: 3.8L 229cid V6, 5.7L 350cid V8 DIESEL 18671
🇺🇸 US 🇨🇦 CA
Front
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This table covers the seals at the Fluid Pump. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again.

Gasket Kit

Brand Part Number Markets Notes Buy
PIONEER Fits: 3.8L 229cid V6, 5.7L 350cid V8 DIESEL 748027
🇺🇸 US 🇨🇦 CA
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This table covers the gasket kits for this job. Typical signs include the leaks that sent this assembly to the bench. Confirm the kit matches the opening you are sealing; unused leftover pieces often belong to another configuration.

Governor / Modulator

Brand Part Number Markets Notes Buy
ATP Popular Fits: 3.8L 229cid V6, 5.7L 350cid V8 DIESEL JX76
🇺🇸 US 🇨🇦 CA
Adjustable 12-19.5 - EDA 2.48 - Black/Red - with EGR
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PIONEER Fits: 3.8L 229cid V6, 5.7L 350cid V8 DIESEL 747024
🇺🇸 US 🇨🇦 CA
Adjustable 12-19.5EDA 2.48
Fitment notes — PIONEER 747024
Adjustable 12-19.5EDA 2.48Black/Redwith EGR
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ROSTRA Fits: 3.8L 229cid V6, 5.7L 350cid V8 DIESEL 510017
🇺🇸 US 🇨🇦 CA
Dual Red Stripe Modulator
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ROSTRA Fits: 3.8L 229cid V6, 5.7L 350cid V8 DIESEL 510020
🇺🇸 US 🇨🇦 CA
ModulatorBlack & Red Stripe
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ROSTRA Fits: 3.8L 229cid V6, 5.7L 350cid V8 DIESEL 510062
🇺🇸 US 🇨🇦 CA
Single Red StripeAdjustable Modulator
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This table covers the governors and modulators that control transmission shift pressure.

Kickdown Solenoid

Brand Part Number Markets Notes Buy
ROSTRA Fits: 3.8L 229cid V6, 5.7L 350cid V8 DIESEL 520604
🇺🇸 US 🇨🇦 CA
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This table covers the Kickdown solenoids. Typical signs include a harsh or missing shift, or a code for this solenoid circuit. Check resistance and the connector before dropping the pan for a solenoid.

Manual Shaft Seal

Brand Part Number Markets Notes Buy
BCA Fits: 3.8L 229cid V6, 5.7L 350cid V8 DIESEL NS8792S
🇺🇸 US 🇨🇦 CA
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NATIONAL Fits: 3.8L 229cid V6, 5.7L 350cid V8 DIESEL 8792S
🇺🇸 US 🇨🇦 CA
General Motors trans.
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WJB / INMOTION PARTS Fits: 3.8L 229cid V6, 5.7L 350cid V8 DIESEL WS8792S
🇺🇸 US 🇨🇦 CA
General Motors trans.THM400 Transmission
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This table covers the seals at the Manual Shaft. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again.

Output Shaft Bushing

Brand Part Number Markets Notes Buy
DURA-BOND Fits: 3.8L 229cid V6, 5.7L 350cid V8 DIESEL 8624988
🇺🇸 US 🇨🇦 CA
Output Shaft (Narrow)
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PIONEER Fits: 3.8L 229cid V6, 5.7L 350cid V8 DIESEL 755073
🇺🇸 US 🇨🇦 CA
Narrow
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This table covers the Output Shaft bushings. Typical signs include a clunk over bumps, or a torn or walked-out bushing you can see. Press the new bushing square. A cocked bushing will tear in a few thousand miles.

Output Shaft Seal

Brand Part Number Markets Notes Buy
SCHAEFFLER Fits: 3.8L 229cid V6, 5.7L 350cid V8 DIESEL SS2962
🇺🇸 US 🇨🇦 CA
Seal KitType of Construction: FM
Fitment notes — SCHAEFFLER SS2962
Seal KitType of Construction: FMMetal
with 1.886 In Shaft
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SKF Fits: 3.8L 229cid V6, 5.7L 350cid V8 DIESEL 18992
🇺🇸 US 🇨🇦 CA
Rear
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This table covers the seals at the Output Shaft. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again.

Rebuild Kit

Banner Kit (Overhaul Kit + Friction Clutch Plates)

Brand Part Number Markets Notes Buy
ATP Fits: 5.7L 350cid V8 DIESEL JM10
🇺🇸 US 🇨🇦 CA
Banner KitIncludes: All paper gaskets, Pan gasket, Rubber O rings, Rubber Lip seals, metal clad seals, sealing rings (full Banner Kit), friction clutch plates
Fitment notes — ATP JM10
Banner KitIncludes: All paper gaskets, Pan gasket, Rubber O rings, Rubber Lip seals, metal clad seals, sealing rings (full Banner Kit), friction clutch plates
Trans. code THM400
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PIONEER Fits: 5.7L 350cid V8 DIESEL 751035
🇺🇸 US 🇨🇦 CA
Banner KitIncludes: All paper gaskets, Pan gasket, Rubber O rings, Rubber Lip seals, metal clad seals, sealing rings (short), friction clutch plates
Fitment notes — PIONEER 751035
Banner KitIncludes: All paper gaskets, Pan gasket, Rubber O rings, Rubber Lip seals, metal clad seals, sealing rings (short), friction clutch platesOverhaul Kit
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Deluxe Kit (Master Kit + Filter, Band & Common Bushings)

Brand Part Number Markets Notes Buy
PIONEER Fits: 5.7L 350cid V8 DIESEL 753024
🇺🇸 US 🇨🇦 CA
Includes: All paper gaskets, Pan gasket, Rubber O rings, Rubber Lip seals, metal clad seals, sealing rings, Friction Clutch plates, Steel Clutch Plates, Filter, Front & Rear Bushings, 2 Bands,and Modulator.PLUS Kit
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Master Kit (Overhaul Kit + Friction & Steel Clutch Plates)

Brand Part Number Markets Notes Buy
ATP Popular Fits: 5.7L 350cid V8 DIESEL JMS9
🇺🇸 US 🇨🇦 CA
Includes: All paper gaskets, Pan gasket, Rubber O rings, Rubber Lip seals, metal clad seals, sealing rings, Friction Clutch plates, Steel Clutch Plates, Filter, Front & Rear Bushings, 2 Bands,and Modulator.PLUS Kit
Fitment notes — ATP JMS9
Includes: All paper gaskets, Pan gasket, Rubber O rings, Rubber Lip seals, metal clad seals, sealing rings, Friction Clutch plates, Steel Clutch Plates, Filter, Front & Rear Bushings, 2 Bands,and Modulator.PLUS KitContains Friction and Steel Clutch Plates, Gaskets, Seals, O'Rings, Sealing Rings, PLUS Oil Filter, Vacuum Modulator, Front Pump Bushing, and Extension Housing Bushing
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ATP Fits: 5.7L 350cid V8 DIESEL JM9
🇺🇸 US 🇨🇦 CA
Standard Kit
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PIONEER Fits: 5.7L 350cid V8 DIESEL 752002
🇺🇸 US 🇨🇦 CA
Standard Kit
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Overhaul Kit (Gaskets, Seals, O-Rings & Sealing Rings)

Brand Part Number Markets Notes Buy
ATP Popular Fits: 5.7L 350cid V8 DIESEL JGS52
🇺🇸 US 🇨🇦 CA
Gaskets, Seals, O-Rings, and Sealing Rings
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PIONEER Fits: 5.7L 350cid V8 DIESEL 750038
🇺🇸 US 🇨🇦 CA
Overhaul KitIncludes: All paper gaskets, Pan gasket, Rubber O rings, Rubber Lip seals, metal clad seals, sealing rings (full Kit)
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TRANSTEC Fits: 5.7L 350cid V8 DIESEL 81000348
🇺🇸 US 🇨🇦 CA
without PistonsDuraprene Pan Gasket
Fitment notes — TRANSTEC 81000348
without PistonsDuraprene Pan Gasket
Fits:
BaseTH400, 375, 475 (3L80)3 Speedor DeluxeTH400, 375, 475 (3L80)3 Speed
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This table covers the rebuild kits for this assembly.

Shift Improvement Kit

Daily Driver

Brand Part Number Markets Notes Buy
TRANSGO Popular Fits: 5.7L 350cid V8 DIESEL SK400
🇺🇸 US 🇨🇦 CA
Shift KitFor 400 Transmissions
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PIONEER Fits: 5.7L 350cid V8 DIESEL 765010
🇺🇸 US 🇨🇦 CA
Improver Kit
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Heavy Duty

Brand Part Number Markets Notes Buy
ATP Fits: 5.7L 350cid V8 DIESEL JK1
🇺🇸 US 🇨🇦 CA
Contains Heavy Duty Upgraded (from OE) SpringsMay Contain Spacer Plates, Spool Valves & Gaskets Depending on Revision of OE
Fitment notes — ATP JK1
Contains Heavy Duty Upgraded (from OE) SpringsMay Contain Spacer Plates, Spool Valves & Gaskets Depending on Revision of OE
Improver Kit
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High Performance

Brand Part Number Markets Notes Buy
TRANSGO Popular Fits: 5.7L 350cid V8 DIESEL 40012
🇺🇸 US 🇨🇦 CA
Reprogramming KitWith Gear Command
Fitment notes — TRANSGO 40012
Reprogramming KitWith Gear CommandFor 400 Transmissions
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TRANSGO Fits: 5.7L 350cid V8 DIESEL 4003
🇺🇸 US 🇨🇦 CA
Reprogramming KitWith Manual Shift Control
Fitment notes — TRANSGO 4003
Reprogramming KitWith Manual Shift ControlFor 400 Transmissions
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TRANSGO Fits: 5.7L 350cid V8 DIESEL 400PRO
🇺🇸 US 🇨🇦 CA
Reprogramming KitWith Gear Command
Fitment notes — TRANSGO 400PRO
Reprogramming KitWith Gear CommandFor 400 TransmissionsIncludes 2-3 Aluminum Accumulator Piston
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This table covers the Shift Improvement kits.

Shift Shaft Repair Sleeve

Brand Part Number Markets Notes Buy
SCHAEFFLER Fits: 5.7L 350cid V8 DIESEL SR3451
🇺🇸 US 🇨🇦 CA
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SKF Fits: 5.7L 350cid V8 DIESEL 480050
🇺🇸 US 🇨🇦 CA
Speedi-Sleeve
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SKF Fits: 5.7L 350cid V8 DIESEL 99050
🇺🇸 US 🇨🇦 CA
Shaft Diameter: 0.500 In
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This table covers the wear sleeves used to restore a Shift Shaft seal surface.

Shift Shaft Seal

Brand Part Number Markets Notes Buy
ACDELCO Fits: 5.7L 350cid V8 DIESEL 8792S
🇺🇸 US 🇨🇦 CA
Gold
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PIONEER Fits: 5.7L 350cid V8 DIESEL 759022
🇺🇸 US 🇨🇦 CA
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SCHAEFFLER Fits: 5.7L 350cid V8 DIESEL SS2114
🇺🇸 US 🇨🇦 CA
4.75 mm WidthNitrile
Fitment notes — SCHAEFFLER SS2114
4.75 mm WidthNitrile12.7 mm Shaft Diameter
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SKF Fits: 5.7L 350cid V8 DIESEL 4912
🇺🇸 US 🇨🇦 CA
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This table covers the seals at the Shift Shaft. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again.

Shift Solenoid

Brand Part Number Markets Notes Buy
PIONEER Fits: 5.7L 350cid V8 DIESEL 771002
🇺🇸 US 🇨🇦 CA
detentshort wire
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This table covers the Shift solenoids. Typical signs include a harsh or missing shift, or a code for this solenoid circuit. Check resistance and the connector before dropping the pan for a solenoid.

Stator Support Shaft Bushing

Brand Part Number Markets Notes Buy
DURA-BOND Fits: 5.7L 350cid V8 DIESEL 8623944
🇺🇸 US 🇨🇦 CA
Stator Support (Front & Rear), Sun Gear Shaft (Front & Rear)Bronze
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This table covers the Stator Support Shaft bushings. Typical signs include a clunk over bumps, or a torn or walked-out bushing you can see. Press the new bushing square. A cocked bushing will tear in a few thousand miles.

Sun Gear Bushing

Brand Part Number Markets Notes Buy
PIONEER Fits: 5.7L 350cid V8 DIESEL 755066
🇺🇸 US 🇨🇦 CA
Driven Sprocket SupportStator and Sun Gear Shaft
Fitment notes — PIONEER 755066
Driven Sprocket SupportStator and Sun Gear ShaftFront & Rear
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This table covers the Sun Gear bushings. Typical signs include a clunk over bumps, or a torn or walked-out bushing you can see. Press the new bushing square. A cocked bushing will tear in a few thousand miles.

Torque Converter

Brand Part Number Markets Notes Buy
TC REMANUFACTURING Fits: 5.7L 350cid V8 DIESEL B3
🇺🇸 US
Standard Stator, 3 Mounting PadsMedium Stall
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TC REMANUFACTURING Fits: 5.7L 350cid V8 DIESEL B6M
🇺🇸 US 🇨🇦 CA
Reman.
Fitment notes — TC REMANUFACTURING B6M
Reman.
Trans. code THM400General Motors trans.
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This table covers the Torque converters. Typical signs include a sulfur smell, rattling substrate, or an efficiency code. Confirm CARB vs Federal certification in the notes before ordering.

Buying Automatic Transmission Parts for a 1982 Checker Marathon

On this vehicle, the automatic transmission covers the automatic gearbox and its supporting cast — filters, coolers, solenoids, mounts and torque-converter parts.

  • Match the engine first. Every automatic transmission part here is engine-specific; each row shows which engine(s) it fits.
  • Read the notes on each row for position, trim and spec qualifiers before you order.
  • Where labor overlaps, replace the filter and pan gasket with every fluid service, and flush the cooler lines when replacing a failed unit.
  • Cross-reference the manufacturer part number against your old part or a service-manual listing.

Start with the largest groups on this page: Rebuild Kit and Extension Housing Seal .

Frequently Asked Questions

How many automatic transmission parts fit the 1982 Checker Marathon?

Our catalog currently lists 104 automatic transmission parts for the 1982 Checker Marathon across 32 subcategories and 17 brands, covering all 4 engine options (3.8L 229cid V6, 4.4L 267cid V8, 5.0L 305cid V8 and 5.7L 350cid V8 DIESEL). Each part is matched to the engine(s) it fits.

Do automatic transmission parts differ between 1982 Checker Marathon engines?

Yes. Every automatic transmission part on this page is engine-specific. Each row shows which engine(s) it fits — use the filter at the top to hide the rest. If you're unsure which engine you have, check the emissions label under the hood or the 8th character of your VIN.

What are the signs of automatic transmission problems on a 1982 Checker Marathon?

Common symptoms include delayed or harsh engagement, slipping under load, fluid that smells burnt, or shuddering at light throttle around 40 mph. If you notice any of these, identify the affected subcategory above and cross-reference the part numbers listed.

What should I replace at the same time?

Where labor overlaps, replace the filter and pan gasket with every fluid service, and flush the cooler lines when replacing a failed unit.

What do the market flags (US, CA, MX) on each part mean?

They show the market for which the manufacturer published application data for that part — where the vehicle was first sold, not where the part was made. If your 1982 Checker Marathon was originally sold in the US, the safest choice is a part marked for the US market.

How do I make sure a part fits my 1982 Checker Marathon?

First match the engine — each row shows which engine(s) the part fits. Then use exactly the fluid specification in the notes — automatic transmissions are the least forgiving component on the vehicle about fluid choice. The notes column carries position and trim qualifiers where they apply.

Other Parts for the 1982 Checker Marathon

Automatic Transmission Parts for Other Checker Marathon Years

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