Products

Rubber that has cycled through enough heat stops returning to its shape, and a seal that does not return does not seal.4L80E valve body to spacer plate - lower 96...

Sticking valves are why a unit shifts correctly cold and misbehaves once it warms up.4L80E bonded lip seal sleeve fwd cl .086 orifice (retros to 1991) in kits. This valve...

4L80E Master Rebuild Kit Performance Heavy Duty for 4L80E and 4L85E automatic transmissions, 1997 and later. Built around Stage 1 Red Clutches and Kolene Steels. Includes Stage 1 performance frictions,...

4L80E Master Rebuild Kit Performance Heavy Duty for 4L80E and 4L85E automatic transmissions, 1997 and later. Built around Stage 2 Blue Plate Clutches and Kolene Steels. Includes Stage 2 performance...

4L80E Overhaul Kit for 4L80E and 4L85E automatic transmissions, 1997 and later. Includes gasket and seal set for a complete overhaul. 1 pieces in 1 components. Overhaul Kit for 4L80E...

A component sourced by appearance instead of by unit code is a repair waiting to come back.4L80E pump used (body cast 302 779 stator cast 512 379) 03. This part...

4L80E Rebuild Kit Performance Heavy Duty for 4L80E and 4L85E automatic transmissions, 1997 and later. Built around Stage 1 Red Clutches. Includes Stage 1 performance frictions, band, gasket and seal...

4L80E Rebuild Kit Performance Heavy Duty for 4L80E and 4L85E automatic transmissions, 1997 and later. Includes frictions, band, gasket and seal set, bushings and Automatic Transmission Filter for a complete...

Bonded pistons fail at the bond line, and the failure is invisible on the bench.4L80E drum forward clutch w ring gear (uses bonded piston). The sealing surface is produced to...

Lip seals take a set in the groove and stop wiping the bore the way they did when new.4L80E drum used forward clutch w ring gear (uses bonded piston). This...

Steel plates lose their flatness from heat cycling, and reusing warped steels with new frictions shortens the life of both.4L80E Steel Clutch Pack. These steel plates are machined flat within...

4L80E Super Master Rebuild Kit for 4L80E and 4L85E automatic transmissions, 1997 and later. Includes frictions, pistons, band, gasket and seal set, bushings, thrust washers and Automatic Transmission Filter for...

Using the wrong component in an automatic transmission rebuild costs the job twice: once for the part and again for the teardown.4L80E Center Support (WLube Hole WShim Type). It is...

Heat is what ends the service life of an automatic transmission, and the cooler is the only part that fights it.4L80E Rear Cooler Line (Push-In Type) UpFitting. This adds the...

A slow solenoid response puts the shift overlap out of range and burns the pack that was fine last week.4R100 Vehicle Speed Sensor for Transmissions Rear Differential VSS OE F85Z-2L373-AB....

4R100 Overhaul Kit for E4OD automatic transmissions, 1996 and later. Includes gasket and seal set for a complete overhaul. 1 pieces in 1 components. Overhaul Kit for 4R100 - replacement...

The first sign is a flare between shifts, and by then the friction surface has already lost the bite it was built with.4R100 Clutch Pack STAGE 1 RED CLUTCHES PERFORMANCE....

When a clutch pack starts slipping, the steels are often the first parts to show heat damage even when the frictions still look serviceable.4R100 sprag od (12 rollers) plastic for...

Getting the right friction pack for a 4R100 rebuild means matching not just the unit but the generation of friction material, and this Gen 2 blue friction clutch pack is...

Reusing a sprag after a failure is the shortest path back to the same repair.4R100 kit convierte sprag de matraca a normal. The assembly meets the specification of the races...

Fluid loss at a shaft seal is slow enough that the unit is damaged before anyone notices the level.4R100 rear (3.180 od)(super duty) metal clad seal. This restores the seal...

Dirty fluid takes out solenoids first because the internal tolerances are the tightest in the unit.4R100 Output Speed VSS UpSensor. The part is produced to the control specification of the...

Steels that have been through a failure carry hot spots you cannot see, and those hot spots are where the next slip starts.4R100 coast clutch (molded rubber) (stamped steel drum)...

Heat distorts a steel plate long before it discolors, which is why a pack that looks reusable often is not.4R100 (Non-PWM) (Cast RFF8) (12 Bolt) (Less Valves) (Uses A Stamped...

Internal specifications change mid production, which is why the unit code matters more than the model year.4R100 Complete Front Pump PWM High Volume Pump. It is cataloged against the unit...

A clutch pack holds torque only if the steels between the frictions are flat and parallel, and used plates rarely are.4R100 pump used pwm (cast rff8) 12-bolt (steel coast drum)....

A worn or failed solenoid pack in a 4R100 unit causes shift complaints that no software update or fluid service will fix, and this direct-replacement assembly with the PWM solenoid...

For 4R100 automatic transmissions. A shudder that comes and goes at light throttle is the lockup clutch telling you it is done.E4OD Remanufactured Torque Converter 278 mm 6 Lug Diesel....

A separator plate with a worn orifice changes the apply rate of every shift it controls.4R100 performance 1989- Valve Body Kit. This returns shift timing and pressure control to their...

Valve body wear mimics clutch wear exactly, which is how good packs get replaced for no reason.4R100 Shift Valves e4o. This restores the apply rates the shift schedule was written...

A4LD 4R44E 4R55E 5R55E Complete Transmission Rebuild Kit [1997-UP]automatic transmission kit designed for service or rebuild applications, providing reliable fit and consistent performance when installed according to specification.What's Included:- 6x...

COMBO 4R44E 4R55E 5R55E Complete Transmission Rebuild Kit [95-96]automatic transmission kit designed for service or rebuild applications, providing reliable fit and consistent performance when installed according to specification.What's Included:- COMBO...

COMBO 4R44E 4R55E 5R55E Complete Transmission Rebuild Kit [97-UP]automatic transmission kit designed for service or rebuild applications, providing reliable fit and consistent performance when installed according to specification.What's Included:- COMBO...

An electrical fault in the shift circuit shows up as a stored code, a harsh shift or a gear the unit will not select.4R44E 5r44e sensor input speed (under center...

BUSHINGC3 A4LD BushingC3 A4LD Direct Clutch Drum 1999-Up [1999-UP]friction components designed to provide reliable clutch engagement and consistent operation under normal transmission service conditions.WHAT'S IN THE BOX:- BushingC3 A4LD Direct...

Shift timing lives in the valve body, and worn bores put that timing out of range.4R44E shift kit. This restores the apply rates the shift schedule was written around.Separator plate...

Shift timing lives in the valve body, and worn bores put that timing out of range.4R44E (improved) shift kit. The assembly restores the circuits that route pressure to each pack.Pressure...

When fluid service time comes on a 4R44E, 4R55E, or 5R55E automatic transmission, having the right pan gasket and Automatic Transmission Filter together in one box means the job moves...

4R44E 4R55E 5R55E Rebuild Kit for 4R44E, 4R55E and 5R55E automatic transmissions, 1995 to 1996. Includes frictions, band, gasket and seal set, bushings and Automatic Transmission Filter for a complete...

Dirty fluid takes out solenoids first because the internal tolerances are the tightest in the unit.4R44E solenoid tcc. This replacement returns the circuit to the response time the shift schedule...

A restricted Automatic Transmission Filter starves the pump and the pressure loss shows up as delayed engagement and slipping under load.4R44E Automatic Transmission Filter 2wd (zero leak). This Automatic Transmission...

Once the element loads up, the bypass opens and unfiltered fluid runs straight through the unit.4R44E Automatic Transmission Filter 4x4 (zero leak). Installing it with the rebuild protects every part...

External leaks and lost line pressure both trace back to gaskets and seals that hardened with age and heat.4R44E valve body (lower) gasket. This set restores the containment the hydraulic...

Old sealing material gets brittle in storage as well as in service, which is why age matters as much as mileage.4R44E valve body (upper) gasket. This set covers the gaskets,...

Sealing rings hold pressure between rotating parts, and once they wear the circuit they feed loses apply pressure.4R44E (w inner o-ring) (24t on inner gear) pump gears. The set covers...

Dirty fluid takes out solenoids first because the internal tolerances are the tightest in the unit.4R44E 4R44E4R55E5R55E Internal (16 Prong Connector) UpWire Harness Solenoid. This electrical component restores the control...

Dirty fluid takes out solenoids first because the internal tolerances are the tightest in the unit.4R44E solenoid shift coast. Response time and resistance match the stock, which keeps the shift...

Worn frictions change the end play of the pack, which delays apply and puts more heat into every shift after that.4R44E Friction Module. This friction set restores the clutch capacity...

The parts that wear in an automatic transmission wear together, so replacing them together is what makes the repair last.4R44E seal pump kit. The kit covers the wear items a...

4R44E 4R55E 5R55E Rebuild Kit for 4R44E, 4R55E and 5R55E automatic transmissions, 1997 and later. Includes frictions, band, gasket and seal set, bushings and Automatic Transmission Filter for a complete...