Sonnax 4L70E HD Servo Piston

Quality heavy-duty servo piston for the GM 4L70E four-speed automatic transmission. This Sonnax component provides increased apply area specifically for the 4L70E variant. The 4L70E is a strengthened member of the 4L60E family with upgraded internals for vehicles equipped with the 5.3L V8 engine and other higher-torque applications.

Direct fitment for 2006-2013 Silverado 1500, Sierra 1500, Tahoe, Yukon and other GM vehicles equipped with the 4L70E. Sonnax quality ensures proper fitment and reliable performance. A professional-grade component trusted by transmission rebuilders nationwide.