4L80E / 4L85E

When the rear reverse band in a 4L80E, 4L85E, or TH400 automatic transmission is worn, glazed, or burned, this rigid smooth-lining band is the direct replacement for that apply position....

When a 4L80E or 4L85E automatic transmission develops a front pump leak or loses line pressure, the cover gasket, body o-ring, front seal, and pump bushing are the first components...

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...

When the pump bushing wears down in a 4L80E or 4L85E automatic transmission, the drive shaft loses its radial support at the pump housing, and everything downstream feels it: pressure...

Electrical failures in the valve body mimic mechanical wear, which is how good clutches get replaced for nothing.1000 manifold pressure 4-button type (will replace 6-button type) switch. Response time and...

Complete Transmission Rebuild Kitautomatic transmission kit for service and rebuild applications.What's Included:- Bushing kit 4l80e (w center support bushing # 34044c) l1997-up (C8C-041730)Vehicle Compatibility:- Avalanche 2500 3/4 Ton [02-06] 8.1L-...

4L80E TH400 4L85E Complete Transmission Rebuild Kit [1964-UP]automatic transmission kit for service and rebuild applications.What's Included:- 4l80e hi-performance steel module kolene (ADA-STMGM08K)- Clutch Pack Raybestos STAGE 1 RED CLUTCHES PERFORMANCE...

Old sealing material gets brittle in storage as well as in service, which is why age matters as much as mileage.4L80E pump cover to case gasket. The rubber is rated...

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...

A shift that arrives late is an electrical symptom until the circuit is ruled out.4L80E lock-up tcc pwm solenoid. This replacement returns the circuit to the response time the shift...

When stock friction material starts glazing or holding inconsistently in a 4L80E or 4L85E, swapping in a Stage 1 red clutch pack is one of the first moves a transmission...

Sprag cages crack before the elements do, and the crack is invisible until it separates.4L80E sprag overdrive (3.25 od w .309 rollers) 01. This returns the position to its designed...

When the pan comes off a 4L80E or 4L85E unit built from 1997 onward, having the Automatic Transmission Filter and the pan gasket ready at the same time keeps the...

4L80E TH400 4L85E Complete Transmission Rebuild Kit [1964-UP]automatic transmission kit designed for service or rebuild applications, providing reliable fit and consistent performance when installed according to specification.What's Included:- 4l80e hi-performance...

Shaft wobble from a worn bushing shows up as a pressure leak long before it shows up as a noise.4L80E washer kit. This bushing set returns the rotating parts to...

Electrical failures in the valve body mimic mechanical wear, which is how good clutches get replaced for nothing.4L80E switch manifold pressure switch. This electrical component restores the control function the...

When the extension housing bushing wears, the output shaft gains side play that accelerates seal wear and leads to fluid loss at the rear of the unit. This is a...

For TH400 automatic transmissions. A seal that has hardened on the lip leaks under pressure and looks serviceable on the bench.4L80E rear (2.705 od) 1.829 id (large truck type) (without...

When the rear reverse band in a 4L80E, 4L85E, or TH400 is worn or damaged, the holding capacity in reverse drops and shift feel suffers - this single rigid band...

When a 4L80E or 4L85E clutch pack has been running hot, swapping in a kolene-treated steel module instead of a plain replacement can make the difference between a repair that...

4L80E 4L85E Rebuild Kit for 4L80E and 4L85E automatic transmissions, 1997 and later. Includes frictions, band, gasket and seal set, bushings and Automatic Transmission Filter for a complete overhaul. 25...

4L80E 4L85E Complete Transmission Rebuild Kit [1991-ON]OE-quality automatic transmission kit for service and rebuild applications.WHAT'S IN THE BOX:- 4L80E FRICTION STEEL COMBO CLUTCH PACK MODULE 1991-ON (ADP-000537)- 4L80E 4L85E [97-UP]...

When a rebuild calls for only the rear reverse band and nothing else, this listing delivers exactly that: one rear reverse band, part number 8681820, sized and specified for TH400,...

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...

When a pan drop is all the job calls for, having the right Automatic Transmission Filter and a matching pan gasket ready as a confirmed pair saves time and avoids...

Apply pressure that reads correct at the port can still be lost at the piston.4L80E piston kit blue performance. Each piston is produced to the bore and travel of the...

TH400 4L80E 4L85E 4L85EFORWARD Complete Transmission Rebuild Kit [1964-UP]automatic transmission kit designed for service or rebuild applications, providing reliable fit and consistent performance when installed according to specification.What's Included:- 4x...

When the center support bushing in a 4L80E or 4L85E wears beyond tolerance, shaft movement increases and the damage spreads quickly to adjacent components, so getting the right replacement piece...

A solenoid that sticks intermittently throws a code the customer never reproduces for the shop.4L80E solenoid shift 2-3 b 1991. This electrical component restores the control function the valve body...

When the front band in a 4L80E or 4L85E automatic transmission wears down, the unit loses the ability to hold cleanly during apply events, and slipping or delayed engagement follows....

4L80E 4L85E Master Rebuild Kit for 4L80E and 4L85E automatic transmissions, 1997 and later. Includes frictions, steels and gasket and seal set for a complete overhaul. 40 pieces in 10...

A seal that has hardened on the lip leaks under pressure and looks serviceable on the bench.4L80E front metal clad seal. This seal restores containment at the shaft it rides...

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...

Bonded pistons fail at the bond line, and the failure is invisible on the bench.4L80E forward sleeve w .070in orifice piston. The sealing surface is produced to the bore it...

4L80E TH400 4L85E Complete Transmission Rebuild Kit [1964-UP]automatic transmission kit for service and rebuild applications.What's Included:- 4l80e hi-performance steel module kolene (ADA-STMGM08K)- Clutch pack RAYBESTO.S stage 2 performance module gen...

4L80E 4L85E Banner Rebuild Kit for 4L80E and 4L85E automatic transmissions, 1997 and later. Includes frictions and gasket and seal set for a complete overhaul. 22 pieces in 5 components....

4L80E TH400 4L85E Complete Transmission Rebuild Kit [1991-ON]automatic transmission kit designed for service or rebuild applications, providing reliable fit and consistent performance when installed according to specification.What's Included:- 4L80E FRICTION...

Sprag failure usually takes the elements it rides against with it.4L80E sprag overdrive (3.00 od w .196 rollers). The assembly is produced to the race dimensions it works against.Cage condition...

Dirty fluid takes out solenoids first because the internal tolerances are the tightest in the unit.4L80E Internal (Male) WTemp Sensor 03Wire Harness. This replacement returns the circuit to the response...

Hairline cracks in a piston do not show until the circuit is under pressure on the road.4L80E direct (bonded) piston. These pistons return the pack to the apply rate it...

Bonded pistons fail at the bond line, and the failure is invisible on the bench.4L80E 4L85E Forward Clutch (Bonded) UpPiston. This set returns the apply circuit to full clamping force.Cracks...

Pressure that reads correct at the test port can still be lost inside the body.4L80E boost valve sleeve reverse (OE type). This returns the hydraulic side of the unit to...

When the controller commands a shift and nothing happens, the circuit is usually the culprit, not the clutch.4L80E speed sensor input output. The unit meets the electrical specification the controller...

When the pan comes off a 4L80E or 4L85E and you need a replacement Automatic Transmission Filter for the deep pan configuration, the geometry of the pickup neck matters as...

4L80E TH400 4L85E 4L85EFORWARD Complete Transmission Rebuild Kit [1964-UP]automatic transmission kit designed for service or rebuild applications, providing reliable fit and consistent performance when installed according to specification.What's Included:- 4l80e...

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...

4L80E Overhaul Kit for 4L80E and 4L85E automatic transmissions, 1990 to 1996. Includes gasket and seal set for a complete overhaul. 1 pieces in 1 components. Overhaul Kit for 4L80E...

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,...

A unit that revs and does not move in one gear is describing a sprag.4L80E sprag 400 intermediate hd (34-element type). This restores the gear that depends on the one...

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...