Improved Boost Valve and Sleeve Kit

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APPLICATIONS:

• 1997-2002 all applications using the 4T65E transaxle
• 1997-2002 all applications using the 4T65E-HD transaxle

Vehicles with a 4T65E (and -HD) transmission often have complaints of soft up-shifts (especially 1-2), delayed reverse and low line rise. This can be traced to the OEM boost sleeve assembly wearing. The OEM boost sleeve assembly consists of 2 steel valves and a steel plug that reside in the boost sleeve. The steel valves wear the aluminum sleeve and allow leakage of boost pressure. The OEM boost assembly is not serviceable separately from OEM which forces the purchase of a new and expensive valve body.

This improved boost sleeve assembly replaces the worn OEM parts. It allows the OEM valve body to be used while restoring the hydraulic integrity of the circuit. The new valve is made of hard-anodized aluminum and has been designed to increase oil lubricity, center the valves and increase longevity. The line boost valve is also longer than the OEM valve to increase wear surface area. The sleeve is made of aircraft quality aluminum and has been designed with oil channels to evenly distribute boost valve oil. The Improved Boost Valve and Sleeve Kit is a drop-in replacement and requires no machining. These have been standard in the INTENSE™ 4T65E-HD Transaxle since our first build, and we are now offering these to complement your own high-performance build!

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