TH400 Shift Kit 1991, remanufactured and ready to install. Fits the TH400. Ships fast from the USA.
This TH400 shift kit for 1991 is remanufactured and bench-ready, 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 TH400 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 TH400 for 1991 and ships from the USA. Confirm your year and application against your own vehicle before installing — the TH400 ran across several updates, and matching the correct revision is what keeps the shift quality right.
| Fits | TH400 1991 |
| Part type | Shift Kit |
| Condition | Remanufactured |
| Brand | GM |
| Reference | 8624486 |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
