GM Transmission Parts - 4L80E | 4L85E - Popular Performance Parts

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Sonnax

4L80E 4L85E Externally Adjustable Low/Reverse Servo Kit by Sonnax

MSRP:

Now: $352.50

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Sonnax

4L80E 4L85E Performance Pack by Sonnax

MSRP:

Now: $355.00

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Sonnax

4L80E 4L85E TH400 HD Intermediate Clutch Outer Sprag Race | Sonnax

MSRP:

Now: $82.95

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Central Valve Bodies

4L80E Manual Valve Gently Oversized to Fit Existing Bore (No Reaming)

MSRP:

Now: $49.95

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TransGo

4L80E 4L85E Vacuum Modulator Kit (1991-2013) TransGo

MSRP:

Now: $109.95

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TransGo

4L80E Separator Plate - HD Upgrade (1991-2013) TransGo

MSRP:

Now: $26.95

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Sonnax

4L80E 4th Accumulator Repair Kit - Sonnax
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Sonnax

4L80E Overrun Clutch Valve Kit (1997-UP) Sonnax Smart-Tech®

MSRP:

Now: $219.95

Currently Out of Stock
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Sonnax

4L80E TH400 Heavy Duty Forward Clutch Hub | Sonnax

MSRP:

Now: $107.10

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Sonnax

4L80E TH400 HD Forward Clutch Hub Front Washer (Pack of 5) 0.078"

MSRP:

Now: $45.75

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Sonnax

4L80E TH400 TH425 Extreme Duty Forward Clutch Hub Kit | Sonnax

MSRP:

Now: $130.03

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Steel Plates

4L80E Performance KOLENE® Steel Module (1991-UP)

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Now: $159.95

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Sonnax

4L80E 4L85E Externally Adjustable Low/Reverse Servo Kit by Sonnax

4L80E 4L85E Externally Adjustable Low/Reverse Servo Kit by Sonnax Externally Adjustable Low/Reverse Servo KitPart No. 34914-28K Designed for GM 4L80-E and 4L85-E racing transmissions, Sonnax externally adjustable low/reverse servo kit...

MSRP:

Now: $352.50
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Sonnax

4L80E 4L85E Performance Pack by Sonnax

4L80E 4L85E Performance Pack by Sonnax Part No. HP-4L80E-01 Sonnax Performance Pack HP-4L80E-01 upgrades GM 4L80-E and 4L85-E transmissions for maximum performance and durability in work/sport vehicles. Innovative components work together to...

MSRP:

Now: $355.00
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Sonnax

4L80E 4L85E TH400 HD Intermediate Clutch Outer Sprag Race | Sonnax

4L80E 4L85E TH400 HD Intermediate Clutch Outer Sprag Race by Sonnax Part No. 34663HD-02 Improve GM 4L80-E, 4L85-E and TH400 transmission durability with Sonnax heavy duty intermediate clutch outer sprag race 34663HD-02. It’s an ideal upgrade...

MSRP:

Now: $82.95
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Central Valve Bodies

4L80E Manual Valve Gently Oversized to Fit Existing Bore (No Reaming)

This is a Gently Oversized Manual Valve for the 4L80E transmission that can be installed in the existing bore without reaming. Its is made from Anodized Aluminium for durability.

MSRP:

Now: $49.95
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TransGo

4L80E 4L85E Vacuum Modulator Kit (1991-2013) TransGo

Vacuum Modulator KitFits 1991-13 4L80E, 4L85EDoes not fit diesel Great for transplants! Provides a more aggressive and tunable pressure boost curve with engine vacuum instead of vehicle PCM controlling PCS/EPC Solenoid. Note: This kit does not eliminate...

MSRP:

Now: $109.95
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TransGo

4L80E Separator Plate - HD Upgrade (1991-2013) TransGo

Separator PlateFits 1991-13 4L80E, 4L85E 1991 to 2013 General Motors vehicles equipped with the 4L80E and 4L85E automatic transmission with high mileage often have worn or damaged valve body separator plates. Features and benefits The TransGo replacement...

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Now: $26.95
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Sonnax

4L80E 4th Accumulator Repair Kit - Sonnax

4L80-E, 4L85-E 4th Accumulator Repair KitPart No. 34805-01K Repeated reciprocation of the 4th accumulator pistons in GM 4L80-E and 4L85-E units causes wear at the piston/pin interface. After this wear reaches a critical point, the piston bore...

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Sonnax

4L80E Overrun Clutch Valve Kit (1997-UP) Sonnax Smart-Tech®

4L80-E, 4L85-E Smart-Tech® Overrun Clutch Valve KitPart No. 34200-40K Fits 1997-UP Units Insufficient holding power in the overdrive roller clutch is the underlying cause of chronic overdrive roller clutch failure in hardworking 4L80-E...

MSRP:

Now: $219.95
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Sonnax

4L80E TH400 Heavy Duty Forward Clutch Hub | Sonnax

4L80E TH400 Heavy Duty Forward Clutch Hub NOT COMPATIBLE WITH 1964-1966 TH400 MAIN SHAFTS WITH MAJOR DIAMETER OF SPLINE ABOUT 0.980''. TO USE THE SONNAX HUBS INT HESE EARLY UNITS A 1967-LATE MAIN SHAFT WITH MAJOR DIAMETER OF SPLINE ABOUT 0.970'' MUST BE...

MSRP:

Now: $107.10
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Sonnax

4L80E TH400 HD Forward Clutch Hub Front Washer (Pack of 5) 0.078"

Pack of 5 Sonnax forward clutch hub front washer 34298-078 replaces the OE .063" thick washer between the forward clutch hub and the forward drum. It is .015" thicker than OE and is the optimal way to tighten front unit endplay in most common builds...

MSRP:

Now: $45.75
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Sonnax

4L80E TH400 TH425 Extreme Duty Forward Clutch Hub Kit | Sonnax

4L80E TH400 TH425 Extreme Duty Forward Clutch Hub Kit NOT COMPATIBLE WITH 1964-1966 TH400 MAIN SHAFTS WITH MAJOR DIAMETER OF SPLINE ABOUT 0.980''. TO USE THE SONNAX HUBS IN THESE EARLY UNITS A 1967-LATER MAIN SHAFT WITH MAJOR DIAMETER OF SPLINE ABOUT ...

MSRP:

Now: $130.03
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Steel Plates

4L80E Performance KOLENE® Steel Module (1991-UP)

4L80E Performance Kolene Coated Steel Module(Module may be Raybestos or Alto depending on availability). Kolene® plates are higher heat resistant and offer increased lubricity. Kolene® is a registered trademark of the Kolene Corporation...

MSRP:

Now: $159.95
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