4R100 Shift Kit 1989-04

This 4R100 shift kit for 1989-04 is new, so when the unit in your transmission is worn out you install a known-good part instead of chasing the failure piece by piece. In the 4R100 the shift kit recalibrates valve-body pressures for firmer, more durable shifts, and a tired one shows up as soft or flaring shifts and premature clutch wear.

It fits the 4R100 for 1989-04 and ships from the USA. Confirm your year and application against your own vehicle before installing — the 4R100 ran across several updates, and matching the correct revision is what keeps the shift quality right.