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Sonnax

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Sonnax

4L80E O-Ringed End Plug Kit (0.668'' TCC Valve Bore)
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Sonnax

4L80E O-Ringed End Plug Kit (OE Style) 5-Pack
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Sonnax

4L80E Output & Reaction Planetary Rebuild Kit (1999-UP)

MSRP:

Now: $69.95

Currently Out of Stock
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Sonnax

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

MSRP:

Now: $254.95

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Sonnax

4L80E Oversized Sealing Rings (Pack of 2)

MSRP:

Now: $11.95

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Sonnax

4L80E Pump Pressure Regulator Valve by Sonnax

MSRP:

Now: $124.95

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Sonnax

4L80E Reverse Checkball Sleeve (1995-UP) 4-Pack
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Sonnax

4L80E Stator Support Bushing Sonnax (1 Bushing)

MSRP:

Now: $16.95

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Sonnax

4L80E Sure Cure® Kit by Sonnax (Tooling Required)

MSRP:

Now: $149.95

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Sonnax

4L80E TCC Regulator Valve Kit (1991-UP) Sonnax

MSRP:

Now: $39.95

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Sonnax

4L80E TH400 4T65E Pinion Thrust Washer - Pre-1998 (Pack of 8)

MSRP:

Now: $10.95

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Sonnax

4L80E TH400 Extreme Duty Forward Clutch Hub Kit

MSRP:

Now: $195.00

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Sonnax

4L80E TH400 Extreme Duty Main Shaft
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Sonnax

4L80E TH400 Front/Rear Unit Endplay Shim - Upgraded (Pack of 10)

MSRP:

Now: $10.95

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Sonnax

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

MSRP:

Now: $74.95

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Sonnax

4L80E TH400 HD Forward Clutch Hub Washer - Rear (Pack of 5) 0.078''

MSRP:

Now: $19.95

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Sonnax

4L80E TH400 HD Forward Clutch Hub Washer - Rear (Pack of 5) 0.094"

MSRP:

Now: $34.95

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Sonnax

4L80E TH400 Heavy Duty Forward Clutch Hub

MSRP:

Now: $149.95

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Sonnax

4L80E TH400 Output & Reaction Planetary Rebuild Kit (1969-1998)

MSRP:

Now: $54.95

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Sonnax

4L80E Wiring Harness Connector Bracket (Late Style Only)

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Now: $9.95

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Sonnax

4L80E O-Ringed End Plug Kit (0.668'' TCC Valve Bore)

4L80-E, 4L85-E O-Ringed End Plug KitPart No. 34994-14K Fits .668" dia. bores Symptoms: No converter apply 1-2, 2-3, 4-5 Flares Contents: End Plugs (5) O-Rings (5)

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Sonnax

4L80E O-Ringed End Plug Kit (OE Style) 5-Pack

4L80-E, 4L85-E O-Ringed End Plug Kit - PACK OF 5Part No. 34200-05K TCC & PR Valves OE end plugs are designed to prevent critical pressure loss by capping the bore, while also...

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Sonnax

4L80E Output & Reaction Planetary Rebuild Kit (1999-UP)

The output and reaction planetary pinion assemblies in '99-later 4L80-E transmissions frequently wear out and must be rebuilt or replaced. New replacement assemblies can be costly and the...

MSRP:

Now: $69.95
Currently Out of Stock
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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...

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Now: $254.95
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Sonnax

4L80E Oversized Sealing Rings (Pack of 2)

Pack of 2 GM 4L80-E and 4L85-E forward drums are often replaced due to wear of the sealing ring bore caused by contact with the input shaft. Contact between shaft and drum occurs because of...

MSRP:

Now: $11.95
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Sonnax

4L80E Pump Pressure Regulator Valve by Sonnax

The OE pressure regulator valve design prevents adequate cooler flow at low RPM and high pressure/demand conditions, which can create overheat complaints. Additionally, in '99-later vehicles, the...

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Now: $124.95
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Sonnax

4L80E Reverse Checkball Sleeve (1995-UP) 4-Pack

4L80-E, 4L85-E Reverse Checkball SleevePart No. 34200-38 Fits units '95-later. Package Quantity: 4 Vehicles with '95-later GM 4L80-E and 4L85-E transmissions commonly exhibit wear...

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Sonnax

4L80E Stator Support Bushing Sonnax (1 Bushing)

4L80-E, 4L85-E Stator Support BushingPart No. 34016-W (You get 1 Bushing) Package Quantity: 1 GM 4L80-E and 4L85-E units may display no converter lockup or codes 68, 39, 1870 or P0741...

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Now: $16.95
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Sonnax

4L80E Sure Cure® Kit by Sonnax (Tooling Required)

4L80-E, 4L85-E The Sure Cure® KitPart No. SC-4L80E Tooling Required: 77754-TL Sonnax Sure Cure kit SC-4L80E, fully compatible with '91-later GM 4L80-E and 4L85-E units, is a...

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Now: $149.95
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Sonnax

4L80E TCC Regulator Valve Kit (1991-UP) Sonnax

4L80-E, 4L85-E TCC Regulator Valve KitPart No. 34994-01K GM vehicles equipped with 4L80-E and 4L85-E transmissions may exhibit problems such as TCC shudder, burnt converter linings, TCC...

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Now: $39.95
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Sonnax

4L80E TH400 4T65E Pinion Thrust Washer - Pre-1998 (Pack of 8)

TH400, 4L80-E, 4T65-E Pinion Thrust WasherPart No. 34875-04 For '98-earlier GM 400, 4L80-E and 4T65-E output and reaction planetaries with .750" wide pinion gears. Package...

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Now: $10.95
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Sonnax

4L80E TH400 Extreme Duty Forward Clutch Hub Kit

Sonnax extreme duty forward clutch hub kit 34322-02K is manufactured from forged 4140 steel and features nitrited and case-hardened splines to eliminate spline wear in extreme applications. Includes...

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Now: $195.00
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Sonnax

4L80E TH400 Extreme Duty Main Shaft

Main shaft failure is a common problem in extreme duty GM 400, 4L80-E and 4L85-E units. OE and aftermarket shafts simply don’t hold up in extreme horsepower applications, leading to spline...

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Sonnax

4L80E TH400 Front/Rear Unit Endplay Shim - Upgraded (Pack of 10)

It is often difficult to reduce front unit endplay on 400 or 4L80/85-E units with excessive spline wear. Normal component wear allows excess forward and direct drum travel. This travel or free-play...

MSRP:

Now: $10.95
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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...

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Now: $74.95
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Sonnax

4L80E TH400 HD Forward Clutch Hub Washer - Rear (Pack of 5) 0.078''

Pack of 5 Sonnax Part Number: 34301-078 A pump that has been resurfaced or accumulated shaft spline wear creates excessive endplay of the forward and direct drums. This reduces sealing ring, clutch,...

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Now: $19.95
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Sonnax

4L80E TH400 HD Forward Clutch Hub Washer - Rear (Pack of 5) 0.094"

A pump that has been resurfaced or accumulated shaft spline wear creates excessive endplay of the forward and direct drums. This reduces sealing ring, clutch, bearing, and thrust washer life. Having...

MSRP:

Now: $34.95
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Sonnax

4L80E TH400 Heavy Duty Forward Clutch Hub

Sonnax heavy duty forward clutch hub 34322-01 is an ideal upgrade over OE hubs in GM 400, 425, 4L80-E and 4L85-E applications. It is made from 1045 steel forging and features a thicker cross-section...

MSRP:

Now: $149.95
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Sonnax

4L80E TH400 Output & Reaction Planetary Rebuild Kit (1969-1998)

Planetary Rebuild KitPart No. 34875RK Output & reaction planetaries, '69–'98 with .750" wide pinion gears Contents Pinion Pins (4) Pinion Rollers (72) Pinion Washers (8) Round...

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Now: $54.95
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Sonnax

4L80E Wiring Harness Connector Bracket (Late Style Only)

4L80-E, 4L85-E Wiring Harness Connector BracketPart No. 34998-01K FITS LATE STYLE CONNECTOR ONLY!! It is common for one of the three plastic retention tabs to break on the wiring harness...

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Now: $9.95
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