Accumulator Piston
Fits all U140, U240, U241, U150, U151, U250, A750, A760, A761, A960 and AB60 Transmission Removal Not Required

  1. Distributor Part Numbers
    TransGo AW-ACCUM
    A & Reds NA
    Capital Core NA
    MST NA
    Natpro NA
    OTS NA
    PDQ NA
    PNH NA
    PTW NA
    Summit NA
    Transtar NA
    WIT T167927A
  2. General Details

    TransGo Toyota accumulator pistons provide a long term fix for a common wear area in these transmissions

    The original Toyota accumulator pistons have no seals and rely solely on the close tolerances of the components, (when new) to control system leaks. However, over time and with use, the soft aluminum accumulator pistons and the valve body bores wear, creating leaks resulting in shift feel complaints and burnt friction discs.

    The TransGo solution utilizes made-in-USA hardened steel accumulator pistons fitted with scarf-cut sealing rings to provide a good seal in worn out valve body bores, even in a less than perfect bore that would normally damage any rubber seals.

    • Accumulator circuit leaks
    • Shift feel complaints including soft shifts, flare shifts, slide bump shifts
    • Burnt frictions discs
    • (1) hardened steel replacement accumulator piston and sealing ring
    Please note:
    • U140, U240, U241 transmission require (2) pistons
    • U150, U151, U250 transmissions require (3) pistons
    • A750, A760, A761, A960, AB60 transmissions requires (1) piston