Description
In 4L60-E 4L65-E 4L70-E Transmissions it is common for the plastic forward accumulator piston to wear or crack. This causes a fluid loss, resulting is delayed engagement, slips, burned clutches and/or band. Repeated reciprocation of the accumulator piston causes the piston pin bore to wear. Fluid loss through the piston pin bore or cracks causes forward clutch to slip. The Sonnax pinless forward accumulator piston kits eliminate these problems.



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