Superior GM 700R4 700-R4 4L60 4L60E 4L65E 4L70E 4L75E Billet Super Servo 4th Gear Apply Piston & Cover Overdrive. Better holding capacity in 4th gear. Firmer 3-4 shift. Lip seal design on piston (less leakage). Proper 4-3 (no drag) release. Constructed of billet aluminum.
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