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. 77998-03k 4l60e Pinless Accumulator Piston Kit GENUINE SONNAX BRAND
. 77998-03k 4l60e Pinless Accumulator Piston Kit GENUINE SONNAX BRAND

. 77998-03k 4l60e Pinless Accumulator Piston Kit GENUINE SONNAX BRAND

$ 6.81

Availability: 35 in stock
  • Manufacturer Part Number: 77998-03k
  • Brand: sonnax
  • OE Spec or Performance/Custom: Performance/Custom
  • Country/Region of Manufacture: United States
  • Manufacturer Warranty: No Warranty
  • Condition: New

    Description

    Your trans needs two (2) of these, one for the 1-2 accum and one for the 3-4 accum.
    Pinless Accumulator Piston Kit
    Part No.
    77998-03K
    Pinless Accumulator Piston
    Aluminum
    D-Ring
    Viton®
    Seal
    PTFE
    Balls (2)
    Steel
    In 200-4R applications, this kit can only be used in the 3-4 accumulator location.
    In GM 200-4R, 4L60 and 4L60-series units it is common to have poor shift quality, burnt bands or clutches due to accumulator piston wear. Repeated reciprocation of the accumulator piston causes wear at the piston pin bore interface. After this wear reaches a critical point, fluid loss through the piston pin bore cannot be compensated due to lack of pump volume. In addition, the piston can get cocked and gall the accumulator bore due to the pin bore wear or the spring bottoming out. To prevent these conditions in the 1-2 or 3-4 accumulator bores, Sonnax offers pinless accumulator piston kit 77998-03K.
    Pinless design eliminates the possibility of pin bore leakage and the additional length stabilizes the piston to prevent piston cocking
    Dual seals stabilize and completely seal the bore and provide a tight seal even after thousands of cycles
    Steel balls plug existing pin bore in case or cover