4L80E [91-UP] Automatic Transmission Piston Overrun Clutch (Bonded)

A piston that leaks past its seal applies the pack slowly, and slow apply is what burns friction material.

4L80E overrun clutch (bonded) piston. These pistons return the pack to the apply rate it was designed around.

Seal orientation determines whether the piston holds pressure or vents it. The pistons are bonded rather than lip sealed. Shipping weight is 1 lb.

The parts list below is exactly what ships. Compare it against your teardown before ordering.

REMCO has supplied automatic transmission parts since 1991, and every order ships with its part listing so the receiving technician can check what arrived against what was ordered.

• Transmission Piston Kit for 4L80E - replacement component designed for proper fit and function
• Designed to support proper clutch apply pressure, stroke and sealing during piston and seal work
• Package Includes: one transmission piston kit as described, supplied loose for piston and seal work
• Bonded rubber lip seals on a steel or aluminum piston body - designed for dependable service in the intended application. Ships at 1.00 lb, 8x7x3 in
• Intended for builders correcting apply pressure loss. Lubricate the lip seals before assembly and seat the piston square in the bore

What's in the box

• 1 x Piston, 4L80E 4L85E Overrun Clutch [Bonded]

Compatible vehicles

• Fits Silverado 2500 [99-04], Sierra 2500 [99-04], Silverado 2500 HD [01-07], Sierra 2500 HD [01-07], Silverado 3500 [01-07], Sierra 3500 [01-07], Silverado 1500 HD [01-07], Sierra 1500 HD [01-07], Suburban 2500 [00-07], Yukon XL 2500 [00-07], Yukon XL 1500 [01-03], Suburban 1500 [01-03], Avalanche 2500 [02-06], Express 2500 [96-09], Express 3500 [96-09], Savana 2500 [96-09], Savana 3500 [96-09], C1500 Suburban [93-99], C2500 Suburban [93-99], K1500 Suburban [93-99], K2500 Suburban [93-99], Yukon [93-01], H1 [92-06].