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Powerglide

Servo Piston

Part No.

28821-02

OE Part No: 3846173

Servo Piston
  • Servo Piston

Small_28821-02k

Powerglide

Servo Piston

Part No. 28821-02

OE Part No: 3846173

Sonnax servo piston 28821-02 for GM Powerglide units features a dual-seal design and can be used with one or two PTFE or OEM-style cast seals.

  • High-strength billet aluminum piston
  • Piston features a rounded profile for better stress distribution