Masthead Powertrain Engines

GM Genuine automatic transmission accumulator piston

Stay with the parts your General Motors vehicle came with for known quality and trust with GM Genuine Parts.


The GM Genuine Original Equipment refurbished automatic transmission accumulator pistons are hydraulic dampers for the transmission hydraulic clutch circuits. The accumulator piston cushions the application of the clutch pack, which provides smooth gear changes. This refurbished accumulator piston has been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors. Refurbishing GM OE accumulator pistons involves returning the failed part to a factory-certified repair facility for cleaning, inspection, and diagnosis. Any faulty components are identified and replaced when necessary, and the repaired unit is tested again to ensure it functions to General Motors original specifications. In addition, refurbishing also benefits the environment by returning components back into service rather than processing as scrap or simply disposing of them.

The GM Genuine Automatic Transmission Accumulator Piston is a GM-recommended replacement part for your GM vehicle’s original factory component offering the quality, reliability, and durability of General Motors OE and is manufactured for fit, form, and function. Our parts are put to the ultimate test through ongoing rigorous product development cycles.

Genuine GM Parts Automatic Transmission Accumulator Piston


Genuine GM parts such as transmission components come backed by the confidence of customer protection. See how we keep you covered.


Find transmission components designed and built by GM to fit the exact specifications of your Chevrolet, Buick, GMC, or Cadillac vehicle.

*Effective on parts purchased April 1, 2018, and later to the original retail purchaser. Contact seller for limited warranty part details, qualifications, and possible labor coverage.

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