The leader in remanufactured valve bodies

ProProven Process by Valve Body Pro

The difference-maker in remanufactured valve bodies

The difference-maker in remanufactured valve bodies

To properly rebuild today’s valve bodies, a solid understanding of the functional design of the unit is necessary. Worn valve body circuits must be restored to original factory specifications in order to operate properly. With this knowledge, we have designed a custom ProProven Process. It consists of ProAxis Reaming™, valve body rebuilding and most important, testing with the latest generation Hydro-Test valve body machine and our personalized HTC-K software.

ProProven Testing

Our own program process, designed in-house, gives our state-of-the-art testing the accuracy that makes it possible to guarantee our remanufactured valve bodies function to OE specifications.

ProProven Pro Axis Reaming™

ProProven Pro Axis™ Reaming ensures valve bores are restored to OE specifications and function as efficiently as the original design.

Pro Axis is an automated process for machining valve bores, specifically for automatic transmission valve bodies, to deliver precise and consistent bore size and finish. This is done by controlling the 3 axes of alignment; X axis, Y axis and Z axis as well as the speed and descent rate of the reamer.

ProProven Rebuilding

We take pride in producing the highest-quality in-house, USA remanufactured valve bodies. Our comprehensive understanding of valve bodies and solenoids — their design and function — allows us to rebuild these essential parts to their original efficiency.


ProProven Product Support

Valve Body Pro provides you with complete peace-of-mind. Our staff of veteran transmission people allows us to provide unparalleled pre- and post-product support. With a combined experience of over 75 years, our expert support techs provide sound advice and reliable answers to your transmission related questions.