SHIFT KIT® Valve Body Repair Kit
Fits all 125 Transmission Removal Not Required

SKU: SK 125 Category:
  1. Distributor Part Numbers
    TransGo SK 125
    A & Reds K51908
    Capital Core T64165
    MST 75908
    Natpro K46944
    OTS K75908
    PDQ TG-SK 125
    PNH TG64165
    PTW K46944
    Summit NA
    Transtar T64165
    WIT T64165
  2. Documents
  3. Related Products
  4. General Details

    General Motors vehicles equipped with Turbo HydraMatic 125 and 125C automatic transmissions often suffer from premature band failure, 3-2 downshift clunk, reverse slip / shudder, lock-up shudder, converter drainback, and pressure regulator valve buzz.

    The TransGo SK 125 SHIFT KIT® Valve Body Repair Kit includes parts as well as complete technical information to fix those common issues. Once re-calibrated with this kit, the band apply is 6 to 8 times faster during a 3-2 downshift. This eliminates the accidental 3-1 downshift heavy kick-down shift which inevitably burns the band over time. The kit also provides twice as much oil to the high clutch and 4 times as much oil to keep the band fully released in 3rd gear.

    • 3-2 clunk, when stopping 20-14 mph
    • Slow, soft, extended or bind up 2-3 shift
    • Lock-up shudder on light acceleration or during lock-up
    • Reverse-slip / shudder due to boost malfunction
    • With this kit, ANY bullet-accumulator exhaust check valve works perfectly, they are just no longer a problem when you install this kit
    • Converter drain-back resulting in delay
    • Pressure Regulator buzz
    • Neutral over bump or railroad track