TH700-R4/4L60E 1-2/3-4 Accumulator Piston fits GM

TH700-R4/4L60E 1-2 & 3-4 Accumulator Bonded Piston – Compatible for GM 1982-Up

Eliminate harsh 1-2 and 2-3/3-4 shifts, flare, and premature clutch wear with this upgraded bonded accumulator piston from Stellar Automotive Group.

This direct-replacement piston works for both the 1-2 and 3-4 accumulator assemblies in all TH700-R4 and 4L60E transmissions. The factory pistons commonly crack or lose their bond under heat and mileage, causing inconsistent cushioning — leading to banging shifts, clutch slip, and rapid friction failure. This molded piston with permanently bonded rubber seal restores proper accumulator function, delivers smooth and firm shifts, and protects your 1-2 and 3-4 clutch packs for reliable performance in daily drivers or performance builds.

Perfect fit for popular models including:

• Chevrolet Camaro, Corvette, Silverado, Tahoe, Suburban
• GMC Sierra, Yukon
• Cadillac Escalade

Symptoms of failing 1-2 or 3-4 accumulator pistons:

• Harsh bang or flare on 1-2 or 2-3/3-4 upshifts
• Delayed then hard gear engagement
• Burnt 1-2 or 3-4 frictions on teardown
• Low accumulator pressure during testing

Don’t let cracked pistons cost you clutch packs — install the Stellar Automotive Group bonded 1-2/3-4 accumulator piston and shift smooth again.

Note: All parts are distributed, not designed or manufactured, by Stellar Automotive Group.

Add this essential TH700-R4/4L60E rebuild part to your cart today and enjoy crisp, reliable shifts!