GM

4L60 Transmission

Related Units Tech Resources View all Transmissions

Browse all Sonnax 4L60 transmission parts here, or use the filters below to find just what you are looking for.

Narrow Your Choices

Symptoms Area of Transmission Part Type High Performance Parts Only

Remanufactured Valve Body

4L60 Remanufactured Valve Body GM044

Electronic TCC

4L60 Remanufactured Valve Body GM043

Hydraulic TCC

Internal

2.84 Ratio Input Carrier Kit 77284-K

3-4 Clutch Boost Spring 77763-01

1988 & later

Helps cure:

3-4 Clutch boost spring collapse
3-4 Clutch boost springs inefficient when overheated

3-4 Clutch Boost Spring & Retainer Assembly 8667424

'88-Later

Helps cure:

3-4 Clutch failure

Batwing Washer 77731-05

Fits 4-pinion rear planetary.

Helps cure:

Planetary failure
Planetary wear

Bearing Kit SBK-G12

1982 & later

Helps cure:

Bearing noise
Bearing failure

Billet Forward Clutch Piston 77764-01

Front Endplay Shim 77409-15

Endplay

Material: Steel
Inner Dia.: 1.240"
Outer Dia.: 1.815"
Thickness: 0.015"

Helps cure:

Excess endplay

Front Planetary Pinion Pin 77732-09

Helps cure:

Planetary failure
Planetary wear

Governor 731

250, 305 & 350 Gas engines

Helps cure:

Shift concerns

Governor 730

Gas

Helps cure:

Shift concerns

Governor 729

Mostly diesel

Helps cure:

Shift concerns

Governor Gear Kit 702

Color: Blue

Helps cure:

Shift concerns

Heavy Duty 3-4 Clutch Backing Plate Kit 74140-01K

Requires ‘91-later 3-4 apply ring stamped with number “7”, measuring 3.671–3.682" in height.

Heavy Duty Input Shaft 77733-10S

Fits '85-later 298mm units with 30-spline input shaft. For '82-84 298mm units with 27-spline input shaft, converter and stator shaft will need to be updated to '85-later design.

Heavy Duty Overrun Clutch Hub 74574-HD

Heavy Duty Reaction Shaft Kit 74602-01K

Universal kit, fits all years and all input carrier styles.

Input Drum Reinforcement Kit 77733-51K

Sleeve, Seal, & Custom Piston

Input Drum Reinforcement Kit 77733-02K

Sleeve & Seal

Pinion Gear 77731-01

Rear Planetary

Helps cure:

Planetary failure
Planetary wear

Pinion Needle Roller 77731-03

Fits 4-pinion rear planetary.

Helps cure:

Planetary failure
Planetary wear

Pinion Pin 77731-02K

Fits 4-pinion rear planetary.

Helps cure:

Planetary failure
Planetary wear

Planetary Rebuild Kit 77731-RK

Fits 4-pinion rear planetary

Helps cure:

Planetary failure
Planetary wear

Rear Planetary Pinion Pin 77732-02

Helps cure:

Planetary failure
Planetary wear

Reinforced Input Housing Kit with Heavy Duty Input Shaft 77733-13K

Fits 298mm units only

Round Washer 77731-04

Fits 4-pinion rear planetary.

Helps cure:

Planetary failure
Planetary wear

Shim 77406-10

Material: Steel
Thickness: 0.010"
Inner Dia.: 1.725"
Outer Dia.: 2.310"

Helps cure:

Excess endplay
Driveline noise

Smart-Tech® Input Housing Kit 77733-06K

Smart-Tech® Input Housing Kit with Heavy Duty Input Shaft 77733-10K

Fits '85-later 298mm units with 30-spline input shaft. For '82-84 298mm units with 27-spline input shaft, converter and stator shaft will need to be updated to '85-later design.

SmartShell® Heavy Duty Reaction Shell Kit 77749-02K

Heavy duty reacion shell

Thrust Washer 77409-16

Selective, OE-Style

Material: Steel
Inner Dia.: 1.240"
Outer Dia.: 1.815"
Thickness: 0.096"

Helps cure:

Excess endplay

Wide Reaction Sun Gear Bushing 77010-01

May not work in some late-production sun gears with OE finish-in-place bushings. Sun Gear, Wide

Material: Steel-backed bronze
Bushing Style: Precision
Housing Bore: 1.706"
Shaft Dia.: 1.575"
Width: 0.600"

Helps cure:

Bushing failure
Reaction carrier shaft damage

Pump

Bushing 77005T

Pump

Material: Bimetal, PTFE-lined
Bushing Style: Precision

Elevated Pressure Main Pressure Regulator Spring 77917-08

Helps cure:

Low base line pressure

Line Pressure Booster Kit 700R4-LB1

Oversized Pressure Regulator Valve 77917-06

Helps cure:

Erratic line pressure
Low line rise
Clutch slippage
Excess pump noise
3-4 Clutch failure

Tooling:

77917-TL
77917-TLC

Pump Slide Pivot Pin 65797

Pump Slide Spring 77722-01K

Replaces 2 OE springs

Pump Spring Spacer 77917-RV

Pump Vane 1280

Helps cure:

Lost or damaged component

Rear Stator Support Bushing 77002B

Rear Stator Support

Bushing Style: Precision
Material: Steel-backed lead/bronze alloy
Width: 0.510"
Inner Dia.: 1.250"
Housing Bore: 1.360"
Shaft Dia.: 1.237"

Helps cure:

Bushing wear
Bushing failure

Rear Stator Support Bushing 77002BT-01

Rear Stator Support

Bushing Style: Precision
Material: Bimetal, PTFE-lined
Housing Bore: 1.360"
Shaft Dia.: 1.237"
Assembled Height: 0.510"
Width: 0.510"

Reverse Boost Valve Kit K77898

Large ratio, O-ring style

Helps cure:

Low Reverse boost
Delayed Reverse
Low line pressure
Poor upshift in manual low

Reverse Boost Valve Kit K77898A

Large ratio, Factory style sleeve, no O-rings

Helps cure:

Low Reverse boost
Delayed Reverse
Low line pressure
Poor upshift in manual low

Seal 77805-S-25

Material: PTFE

Stator Support Bushing 35007A

‘84-Later

Bushing Style: Precision
Material: Steel-backed copper alloy
Width: 0.500"
Housing Bore: 1.121"
Inner Dia.: 1.004"
Shaft Dia.: 1.002"

Helps cure:

Bushing wear
Bushing failure

Stator Support Shaft Kit 77918S-K

298mm or 245mm Converter, non-reluctor style, Universal bolt pattern

Helps cure:

Overheated converter
Delayed Reverse
No 3rd
3-4 Clutch failure
Code 1870

TCC Apply Valve Kit 77805-K

Fits non-PWM units only.

Helps cure:

No lockup
Falls out of lockup when hot
Fluid blown out fill tube
Lockup immediately after 2nd gear
1-2, 2-3, 4-5 Flares

TCC Solenoid Snout Kit 77942-01K

'96-Earlier

Helps cure:

TCC apply concerns
Overheated converter
Loss of lube oil

TV Boost Valve Kit 77917-471

.471" Dia., O-ring style

Helps cure:

Soft slide shifts
3-4 Clutch burned
Reduced band life

TV Boost Valve Kit 77917-02K

.423" Dia., Factory-style sleeve (no O-rings)

Helps cure:

Soft slide shifts
3-4 Clutch burned
Reduced band life

TV Boost Valve Kit 77917-03K

.471" Dia., Factory-style sleeve (no O-rings)

Helps cure:

Soft slide shifts
3-4 Clutch burned
Reduced band life

TV Boost Valve Kit 77917-500

.500" Dia., O-ring style

Helps cure:

Soft slide shifts
3-4 Clutch burned
Reduced band life

TV Boost Valve Kit 77917-01K

.423" Dia., O-Ring style

Helps cure:

Soft slide shifts
3-4 Clutch burned
Reduced band life

TV Boost Valve Kit 77917-04K

.500" Dia., Factory-style sleeve (no O-rings)

Helps cure:

Soft slide shifts
3-4 Clutch burned
Reduced band life

Valve Body

Accumulator Valve Train Kit 77777M-K

Fits "M" version valve trains in heavy vehicles only. Fits 4L60 '87-later auxilary valve body styles only. Valve dia. = .341".

Helps cure:

1-2 Bang at light throttle
Reduced 2-4 band life

Accumulator Valve Train Kit 77777L-K

Fits "L" version valve trains in light/medium weight vehicles only. Fits 4L60 '87-later auxiliary valve body styles only. Valve dia. = .330".

Helps cure:

1-2 Bang at light throttle
Reduced 2-4 band life

Checkball 10000-08

Imidized Plastic, .250" Dia.

Material: Imidized Plastic
Dia.: 0.250"

Helps cure:

Lost or damaged component

Checkball 10000-10

Imidized Plastic, .312" Dia.

Material: Imidized Plastic
Dia.: 0.312"

Clip 77754-08

Height: 1.010"
Width: 0.520"

Oversized Throttle Valve 77968

Helps cure:

Low line rise
3-4 Clutch & band failure

Tooling:

77968-RM

Shortened TV Link 77872-01

Helps cure:

Low line rise
Soft shifts
3-4 Clutch failure
3-4 Band failure

TV Plunger Spring 77968-01K

Helps cure:

Low throttle pressure
Low line pressure

The Sure Cure® Kit SC-4L60

Helps cure:

3-4 Clutch failure
Burnt clutches & bands
Excess pump noise
Low line pressure
Low line rise
Low Reverse boost
2-3 Shift feel poor
Early upshifts
Soft upshifts
Soft shifts
Slide shifts
Delayed Reverse

Tooling:

77917-TL

Throttle Valve 77968-02

Helps cure:

Lost, damaged or modified original valve

Throttle Valve Plunger Kit 77966-94MK

Prevents forced 4-3 kickdown below three-quarter throttle

Helps cure:

Low line rise
Early upshifts
Soft upshifts
Premature 3-4 clutch failure
Low line pressure

Throttle Valve Plunger Valve Kit 77966-94K

Replacement for OE plungers with “94” code.

Helps cure:

Low line rise
Early upshifts
Soft upshifts
Premature 3-4 clutch failure
Low line pressure

Case

1-2 or 3-4 Accumulator Spring 74926

Helps cure:

Soft shifts

3-4 Accumulator Sleeve Kit 77998-01K

Helps cure:

Case damage
Scored accumulator bores
Worn accumulator bores

3rd Accumulator Checkball & Seat 74480D

Helps cure:

2-3 Soft
2-3 Flare
3-4 Clutch burned
2-4 Band burned
3-2 Bind-up
2-3 Bind-up

Enhanced Performance Accumulator Spring 77704S

Oversized Accumulator Pin 77999

Helps cure:

Reduced band life
Reduced clutch life
2-3 Bind-up
2nd Gear starts
Poor shift quality

Tooling:

77999-02K

Oversized Accumulator Pin & Reamer Kit 77999-02K

Helps cure:

Reduced band life
Reduced clutch life
2-3 Bind-up
2nd Gear starts
Poor shift quality

Pinless Accumulator Piston Kit 77998-03K

In 200-4R applications, this kit can only be used in the 3-4 accumulator location.

Helps cure:

Poor shift quality
Burnt clutches & bands

Replacement Seal Kit 77998-03SK

Seals Fit 77998-03K Piston

Servo Release Check Valve Kit 77701-076

2nd Gear Servo Release

Helps cure:

Reduced 3-4 clutch life
2-3 Shift feel poor
3-2 Bind-up

Servo/Band

2nd Gear "Corvette" Ratio Servo Kit 77701-04K

2nd Gear Super Hold Servo Kit 77911-03K

4th Gear Super Hold Dual Servo Kit 77767K

Extra Wide Intermediate Band 77700-01K

Kevlar^® Material

Extra Wide Intermediate Band 77700-01

Red Material

Color: Red

Metal Clad Viton® Seal 77911-02

Press in

Material: Fluorocarbon
Housing Bore: 0.750"
Shaft Dia.: 0.500"

Helps cure:

2-3 Concerns
2-4 Band failure

Replacement Seal Kit 77701-04SK

For 77701-04K

Replacement Seal Kit 77911-03SK

For 77911-03K 2nd Gear Superhold Servo

Replacement Seal Kit 77767K-SK

Servo Pin Kit 77787-02K

Extra long pin, with seals

Other

Forward Piston Installation Tool 77764-INSTL

TV Cable Corrector Kit AS1-01K

TV Cable Corrector Kit AS5-05K

Fits Edlebrock^®-style linkage.

TV Cable Corrector Kit for Holley Carburetors AS4-04K

Fits carburetors with Holley^® aftermarket-style throttle arm.

Throttle Cable & TV Cable Bracket AS6-01

Fits Holley^® carburetors.