Description: Kit Includes: Pinless Accumulator Piston D Ring PTFE Seal 2 × Steel Balls Description: In GM 4L60-E, 4L65-E and 4L70-E units it is common for the plastic forward accumulator piston to wear or crack. This causes a loss of fluid, resulting in delayed engagement, slips, burnt clutches and/or bands. Repeated reciprocation of the accumulator piston causes the piston pin bore to wear, while fluid loss through the piston pin bore or cracks causes forward clutch to slip. Sonnax pinless forward accumulator piston kit 77987-01K eliminates these problems. Dual seals stabilize and completely seal the bore, providing a tight seal even after thousands of cycles Pinless design eliminates the possibility of pin leakage, and the additional length stabilizes the piston to prevent piston cocking Includes steel balls for plugging existing pin bore in valve body APPLICATION: Fit for 4L60E 4L65E 4L70E Transmission Fit for 1993-2018 4L60E: 1-2 & 3-4 Accumulator Piston (.310" Pin Diameter) (Pinless Design) Fit for 1981-1990 TH200-4R: Only 3-4 Accumulator Piston (.310" Pin Diameter) (Pinless Design) Fit for 2001-2018 4L70E: 1-2 & 3-4 Accumulator Piston (.310" Pin Diameter) (Pinless Design) Fit for 2001-2018 4L65E: 1-2 & 3-4 Accumulator Piston (.310" Pin Diameter) (Pinless Design) Fit for 1982-1993 TH700-R4: 1-2 & 3-4 Accumulator Piston (.310" Pin Diameter) (Pinless Design)
Price: 35.99 USD
Location: Fontana, California
End Time: 2025-01-24T23:17:06.000Z
Shipping Cost: 0 USD
Product Images
Item Specifics
Restocking Fee: No
Return shipping will be paid by: Seller
Returns Accepted: Returns Accepted
Item must be returned within: 60 Days
Brand: ALLOYWORKS
Items Included: Piston
Type: Piston kit
Manufacturer Part Number: 77987-01K, (2) 77998-03K
Material: Aluminum
Manufacturer Warranty: 1 Year
Performance Part: Yes
Model: 4L60E 4L65E 4L70E
