GM 4L30E Transmission Valve Body Shift Correction Package by Superior

Product Description

A valve body shift correction package for GM 4L30E automatic transmissions, made by Superior Transmission Parts, Superior number K4L30E. It addresses bellhousing gasket blowout and case leaking at the servo cores, and is meant to correct or prevent weak shifts, lock-up chatter, and premature clutch or band failure, with better lube flow, for both regular and heavy duty use.

Specifications