4L80E 4L85E DUAL SEAL BILLET ACCUMULATOR PISTON KIT

You are buying a dual seal accumulator piston SET for the 4L80E series of transmissions

• This set REQUIRES the later model 3/8″ (.375″) accumulator pin
• Accumulator pistons have slightly higher spring preload than stock
• This set includes two accumulator pistons – enough for one transmission
• Both accumulator pistons use two seals each, unlike the OE piston, to help eliminate pin wear
• This one solves the problem by providing two seals and uses the pin to stabilize the piston in the bore