The Best Place to Buy Upgraded Transmission Parts Made by Sonnax is Here

Sonnax

Precision International

Transtar

Aftermarket

Quality Used Hard Parts

Raybestos Powertrain

Alto Products Corp

TransGo

Steel Plates

Global Transmission Parts

View all Brands

Sonnax

Precision International

Transtar

Aftermarket

Quality Used Hard Parts

Raybestos Powertrain

Alto Products Corp

TransGo

Steel Plates

Global Transmission Parts

Superior Transmission Parts

Motorcraft

Central Valve Bodies

Rostra Precision Controls

BorgWarner

AC Delco

Adapt-A-Case

Fitzall

ATSG

Exedy

OEM

Mopar

Torque Converters

TCS

Circle D Specialties

Reid Racing

Remanufactured OEM Part

Recon Torque Converters

Rebuilt OEM Pumps

Dura-Bond

Koyo

CVC

Transtec

LubeGard

Superior Machine & Fabrication

Filtran

Federal Mogul

Optimum Maintenance Services, LLC

Bosch

Idemitsu

NSK

Hayden

Dorman

RatioTek

ZF Friedrichshafen

Atec Trans Tool

Saxco

Asin

DEUTSCH

Mobil 1

Streetside Tools

TRANSBRITE

View all Brands

Home
Sonnax

Quick view Details

Sonnax

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

MSRP:

Now: $54.65

Add to Cart
Quick view Details

Sonnax

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

MSRP:

Now: $21.95

Add to Cart
Quick view Details

Sonnax

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

MSRP:

Now: $31.95

Add to Cart
Quick view Details

Sonnax

4L80E TH400 HD Intermediate Clutch Backing Plate | Sonnax | .375''

MSRP:

Now: $64.95

Add to Cart
Quick view Details

Sonnax

4L80E TH400 Heavy Duty Forward Clutch Hub | Sonnax

MSRP:

Now: $134.95

Add to Cart
Quick view Details

Sonnax

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

MSRP:

Now: $34.45

Add to Cart
Quick view Details

Sonnax

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

MSRP:

Now: $158.22

Currently Out of Stock
Quick view Details

Sonnax

4L80E TH400 TH425 Rear Unit Endplay Shim | Sonnax | .005'' | 10-Pack

MSRP:

Now: $9.95

Add to Cart
Quick view Details

Sonnax

4L80E Wiring Harness Connector Bracket (Late Style Only)

MSRP:

Now: $7.95

Add to Cart
Quick view Details

Sonnax

4R100 AX4N E4OD Line Pressure Modulator Plunger Valve Kit (XHD .500″) - Sonnax

MSRP:

Now: $33.95

Add to Cart
Quick view Details

Sonnax

4R100 E4OD Bore Sizing Tool

MSRP:

Now: $50.00

Add to Cart
Quick view Details

Sonnax

4R100 E4OD Center Support Ball Bearing (1995-UP)

MSRP:

Now: $19.45

Add to Cart
Quick view Details

Sonnax

4R100 Sonnax Shift Performance Pack

MSRP:

Now: $224.35

Add to Cart
Quick view Details

Sonnax

4R100 TCC Control Plunger Valve Kit (PWM) Sonnax

MSRP:

Now: $31.65

Add to Cart
Quick view Details

Sonnax

4R44E 4R55E 5R44E 5R55E Boost Valve Kit (OE Ratio) Sonnax

MSRP:

Now: $38.95

Add to Cart
Quick view Details

Sonnax

4R44E 4R55E 5R44E 5R55E 5R55N 5R55S 5R55W A4LD Bell Housing Pump Cover Bushing | Sonnax | 5-Pack

MSRP:

Now: $23.16

Add to Cart
Quick view Details

Sonnax

4R44E 4R55E 5R44E 5R55E A4LD C3 Reverse Servo Sleeve Kit - Sonnax

MSRP:

Now: $34.95

Add to Cart
Quick view Details

Sonnax

4R44E 4R55E 5R44E 5R55E A4LD Crankshaft Spacer (6-Bolt Holes) Sonnax

MSRP:

Now: $23.95
Quick view Details

Sonnax

4R44E 4R55E 5R44E 5R55E A4LD Crankshaft Spacer (8-Bolt Holes) Sonnax

MSRP:

Now: $24.95

Add to Cart
Quick view Details

Sonnax

4R44E 4R55E 5R44E 5R55E A4LD Relief Valve (Pack of 10) Sonnax

Quick view

Sonnax

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

Sonnax part number: 34298-078 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...

MSRP:

Now: $54.65
Add to Cart
Quick view

Sonnax

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

Sonnax part number: 34301-078Fits: TH400, 4L80-E, 4L85-E Package Quantity: 5 A pump that has been resurfaced or accumulated shaft spline wear creates excessive endplay of the forward and direct drums...

MSRP:

Now: $21.95
Add to Cart
Quick view

Sonnax

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

Sonnax part number: 34301-094Fits: TH400, 4L80-E, 4L85-E Package Quantity: 5 A pump that has been resurfaced or accumulated shaft spline wear creates excessive endplay of the forward and direct drums...

MSRP:

Now: $31.95
Add to Cart
Quick view

Sonnax

4L80E TH400 HD Intermediate Clutch Backing Plate | Sonnax | .375''

Sonnax part number: 34144HD-01Fits: 4L80-E, TH400OE part no.: 8675519 .375" Thick GM ’98-earlier 4L80-E transmissions can suffer intermediate backing plate breakage, clutch failure an

MSRP:

Now: $64.95
Add to Cart
Quick view

Sonnax

4L80E TH400 Heavy Duty Forward Clutch Hub | Sonnax

Sonnax part number: 34322-01 NOT COMPATIBLE WITH 1964-1966 TH400 MAIN SHAFTS WI

MSRP:

Now: $134.95
Add to Cart
Quick view

Sonnax

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

Sonnax part number: 34875RKFits: 4L80E, TH400 · 1969-1998 Output and reaction planetary rebuild kit for the 4L80E and TH400, covering 1969-1998 transmissions with .750 inch wide pinion gears. Sonnax...

MSRP:

Now: $34.45
Add to Cart
Quick view

Sonnax

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

Sonnax part number: 34322-02K NOT COMPATIBLE WITH 1964-1966 TH400 MAIN SHAFTS W

MSRP:

Now: $158.22
Currently Out of Stock
Quick view

Sonnax

4L80E TH400 TH425 Rear Unit Endplay Shim | Sonnax | .005'' | 10-Pack

Sonnax part number: 34006-05 TH400 TH425 4L80E 4L85E Rear Unit Endplay Shim | 0.005'' Thick No tooling required Sonnax offers two solutions for excessive endplay in GM TH400, TH425, 4L80-E and 4L85-E...

MSRP:

Now: $9.95
Add to Cart
Quick view

Sonnax

4L80E Wiring Harness Connector Bracket (Late Style Only)

Sonnax part number: 34998-01KFits: 4L80-E, 4L85-E FITS LAT

MSRP:

Now: $7.95
Add to Cart
Quick view

Sonnax

4R100 AX4N E4OD Line Pressure Modulator Plunger Valve Kit (XHD .500″) - Sonnax

Sonnax part number: 96948-05K Extreme heavy duty, .500" dia. Some E4OD, 4R100 and AX4N transmissions have soft 1-2 or 2-3 shifts, intermittent harsh shifts or poor line rise complaints. These can be...

MSRP:

Now: $33.95
Add to Cart
Quick view

Sonnax

4R100 E4OD Bore Sizing Tool

Sonnax part number: 36948-12Fits: 4R100, E4OD Sonnax bore sizing tool 36948-12 smooths and deburrs accumulator control valve bores to permit salvage of accumulator bodies. This tool allows the bore...

MSRP:

Now: $50.00
Add to Cart
Quick view

Sonnax

4R100 E4OD Center Support Ball Bearing (1995-UP)

Sonnax part number: 96423-01Fits: 4R100, E4OD · 1995-up A center support ball bearing for 4R100 and E4OD automatic transmissions, 1995-UP. It is an OE-equivalent replacement for the center support...

MSRP:

Now: $19.45
Add to Cart
Quick view

Sonnax

4R100 Sonnax Shift Performance Pack

Sonnax part number: HP-4R100-01Fits: 4R100 Tooling Needed: 36948-12 (Recommended)

MSRP:

Now: $224.35
Add to Cart
Quick view

Sonnax

4R100 TCC Control Plunger Valve Kit (PWM) Sonnax

Sonnax part number: 36424-08KFits: 4R100 Fits PWM units only. Ford 4R100 PWM units use a plunger valve assembly and coil spring to cushion the TCC control valve. That assembly uses regulated...

MSRP:

Now: $31.65
Add to Cart
Quick view

Sonnax

4R44E 4R55E 5R44E 5R55E Boost Valve Kit (OE Ratio) Sonnax

Sonnax part number: 37947-01KFits: 4R44E, 4R55E, 5R44E, 5R55E OE Ratio Some typical problems in Ford 4R44E, 4R55E, 5R44E and 5R55E units are soft shifts, delayed Reverse, poor modulator control...

MSRP:

Now: $38.95
Add to Cart
Quick view

Sonnax

4R44E 4R55E 5R44E 5R55E 5R55N 5R55S 5R55W A4LD Bell Housing Pump Cover Bushing | Sonnax | 5-Pack

Sonnax part number: 56001X 4R44E 4R55E 5R44E 5R55E 5R55N 5R55S 5R55W A4LD Bell Housing Pump Cover Bushing NOTE: Finish-in-place style bushings requires advanced machining to ensure proper ID and...

MSRP:

Now: $23.16
Add to Cart
Quick view

Sonnax

4R44E 4R55E 5R44E 5R55E A4LD C3 Reverse Servo Sleeve Kit - Sonnax

Sonnax part number: 56532-01KFits: 4R44E, 4R55E, 5R44E, 5R55E, A4LD, C3 The reverse servo bore found on the case of listed Ford transmissions can become scored due to repeated oscillation of the...

MSRP:

Now: $34.95
Add to Cart
Quick view

Sonnax

4R44E 4R55E 5R44E 5R55E A4LD Crankshaft Spacer (6-Bolt Holes) Sonnax

Sonnax part number: 56000-CS6Fits: 4R44E, 4R55E, 5R44E, 5R55E, A4LD The crankshaft spacer in A4LD, 4R44E and 5R55E applications is prone to cracking and wear because the powdered metal material of...

MSRP:

Now: $23.95
Quick view

Sonnax

4R44E 4R55E 5R44E 5R55E A4LD Crankshaft Spacer (8-Bolt Holes) Sonnax

Sonnax part number: 56000-CS8Fits: 4R44E, 4R55E, 5R44E, 5R55E, A4LD The crankshaft spacer in A4LD, 4R44E and 5R55E applications is prone to cracking and wear because the powdered metal material of...

MSRP:

Now: $24.95
Add to Cart
Quick view

Sonnax

4R44E 4R55E 5R44E 5R55E A4LD Relief Valve (Pack of 10) Sonnax

Sonnax part number: 10000-02KFits: 4R44E, 4R55E, 5R44E, 5R55E, A4LD High radius Package Quantity: 10 Sonnax offers relief valve 10000-01K to replace the various relief valves and d

View Details

Compare Selected

Shop by Category

Shop by Brand

Shop by Brand

Sonnax