4L60E Accumulator Pistons

Fits 1993-15 4L60E, 4L65E, 4L70E
4L6-FWD Forward
4L6-2ACM 1995-03 Type 2
4L65-2ACM 2003-15 Type 3 Transmission Removal Not Required

SKU: Accumulator Pistons Category:

1993 to 2015 General Motors vehicles equipped with the 4L60E, 4L65E and 4L70E automatic transmission often have a worn-out accumulator piston pin bore or a broken plastic accumulator piston.


4L6-FWD Aluminum forward accumulator piston
4L6-2ACM 1995-03 Type two 1-2 accumulator piston (with three legs)
4L65-2ACM 2003-15 Type three 1-2 accumulator piston (without legs)
Features and benefits:

TransGo replacement forward accumulator piston replace both the plastic and the aluminum piston and is thicker than the OE that prematurely break and wear out. The 1-2 accumulator pistons are available in both type two and type three pistons with a .236” diameter pin bore.

  • Direct replacement for broken plastic accumulator pistons
  • Pressure loss from worn out piston pin bore
  • Partial bind-up in manual low with worn 1-2 piston pin bore