4L60E 4L65E 4L70E High Performance Pressure Regulator Spring Sonnax 77917-10 1993 Up
This high-quality, heavy-duty pressure regulator valve spring 77917-10 from Sonnax fits GM 4L60-E, 4L65-E and 4L70-E transmissions. The spring increases line pressure by approximately 13%, improving transmission performance in both standard and high performance applications.
- Increases line pressure by approximately 13%
- Produces firmer engagements/upshifts without creating harshness or clunky downshifts
- Improves transmission performance in both standard and high performance applications
Parts ship daily from our distribution center.
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This item is packaged for Wholesale Distribution
WARRANTY requests need to be accompanied with the appropriate code
as diagnosed by a professional transmission shop.
Vehicles must be professionally diagnosed for solenoid failure prior to purchase.
We cannot guarantee any one item will fix all transmission problems.
Solenoid failure is often accompanied by additional failures;
for example valve body failures, internal wear or damaged hard parts.