4L65E Boost Valve Kit 2001-2013 S74927K Sonnax

Sonnax 4L65E Boost Valve Kit

Overview

Quality boost valve and sleeve kit for the GM 4L65E four-speed automatic transmission. This Sonnax component provides pressure improvement specifically for the 4L65E variant used in 2001-2006 Chevrolet and GMC vehicles.

The 4L65E is a strengthened member of the 4L60E family with upgraded internals for higher torque applications including the 5.3L V8 engine platform.

Direct fitment for Trailblazer, Envoy, Tahoe, Yukon and other GM vehicles equipped with the 4L65E. While sharing the 4L60E architecture, the 4L65E uses specific upgraded components that must be matched correctly during rebuilds.

Sonnax quality ensures proper fitment and reliable performance.

All parts ship from our warehouse with quality inspection. Same-day shipping on most orders. Professional installation recommended.