Pinless Forward Accumulator Piston Kit for Sonnax FWD 1-2 3-4 4L60E 4L65E 4L70E

Description: 4L60E 4L65E 4L70E Transmission Sonnax Pinless Accumulators Forward, 1-2, and 3-4 Accumulator Piston Kit Item specifics: Condition: Brand New Type: Pinless Accumulator Piston kit Material: Aluminum Fitment Type: Direct Replacement Model: 4L60E, 4L65E, 4L70E OE Part Number:77987-01K, (2) 77998-03K Description: Part No. 77987-01K Dual Seal design 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 Contents:Piston D-Ring PTFE Seal Steel balls (2) Part No. 77998-03K (2PC) In listed GM 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 Contents:D-Ring Pinless Accumulator Piston Aluminum Seal PTFE Steel Ball .312" dia. Steel Ball .236" dia. Note: In 200-4R applications, this kit can only be used in the 3-4 accumulator location. Fitment: 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) Note: Please check the part number before buying to make sure it fits your car Warm Prompt： Please BE AWARE that the vehicle compatibility list on eBay may not be 100% accurate. Please Comfirm The Parts Number And Confirm This Item Fits Yours Before Purchasing. Above listed items are a main reference, for detailed model, please use the year/make/model check finder and check the replace part numbers to confirm the compatibility before purchasing. If you have any issues with our product, before leaving us neutral or negative feedback, please contact us first. We will do everything we can to give you a satisfying solution.

Price: 25.13 USD

Location: Chino, California

End Time: 2025-01-04T07:40:36.000Z

Shipping Cost: 0 USD