4L80-E, TH400

Low/Reverse Servo Piston
Part No. 34914-01

Fits all TH400 & '95-earlier 4L80-E.

OE Part No. 24232745

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OE cast aluminum servo pistons can be brittle and are prone to breaking. Sonnax Low/Reverse servo piston 34914-01 for GM TH400 and '95-earlier 4L80-E transmissions is a direct replacement upgrade made from high-strength, billet aluminum to prevent failure.

  • 4L80-E, TH400 Low/Reverse Servo Piston 34914-01