How it works: Using BD’s exclusive Variable butterfly Technology, providing peak retarding power throughout the engine’s rpm range unlike some models that rely on a hole/orifice within the butterfly to...
Cummins Coolant Bypass Kit. Another product from Fleece Performance built out of necessity is the 2003-2016 Cummins Coolant Bypass kit. The Cummins engine cooling system was designed to adequately cool a...
Fleece Performance Engineering is a leading manufacturer of aftermarket diesel performance products. With a reputation for innovation, quality, and service, our products push the limits of diesel performance technology.Kit Contents:...