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Sonnax Accumulator Pistons

5.0 out of 5 stars 2 Customer Reviews

Noticing some forward slip and/or delayed engagement with your GM automatic transmission? Sonnax accumulator pistons are direct replacements for OE plastic pistons and restore sealing integrity at the pin bore. The aforementioned issues, as well as burnt clutches and bands can be caused by loss of fluid. Deterioration at older aluminum piston pin bores due to repeated reciprocation and/or cracks in plastic accumulator pistons may be the cause. Avoid a costly valve body replacement by ordering a Sonnax accumulator piston.

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Sonnax Accumulator Pistons 74927-AP

Accumulator Piston, Aluminum, Forward, GM, 4L60E, 4L65E, 4L70E, Each

Part Number: SOX-74927-AP

5.0 out of 5 stars ( 2 )

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