Allison 1000 2000 2400 Valve Body E-Shift Valve Spring 37000-02 wholesale The spring pack shim in

The spring pack shim in the kit gives the option slightly tune the 4C clutch to release more quickly

The plug has a smaller retaining pin hole to reduce plug movement that results in wear

Aftermarket Improvement

Warranty is non transferable and void if product is cut open by any other person(s)

4 Intermediate HT

Allison 1000 2000 2400 Valve Body E-Shift Valve Spring 37000-02 wholesale The spring pack shim inSuperseded Part Number: 37000 02, S121741S 3 Interchange Part Number: 37000 02, S121741S 3 Manufacturer Part Number: 37000 02, S121741S 3 OE Spec or Performance Custom: Performance Custom Recommended Tooling (sold separately): 37000 02BST Other Part Number: 37000 02, S121741S 3 Brand: Sonnax 1000 2000 2400 E Shift Valve Spring Part No. 37000 02 Fits '00 '09 units only. Requires: 37000 02BST (Recommended) Allison 1000 2000 2400 units commonly exhibit