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Fleece Performance Brand

410 products
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. Products such as the Cheetah line of Turbochargers, the TapShifter, and the TurboBrake have established Fleece Performance as an industry innovator.
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Regular price $68.99
Sale price $68.99
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All new Fleece Performance MAP sensor spacer with boost reference port for the L5P Duramax.    Problem: Because of the direct placement of the MAP sensor into the intake air stream from the fact...
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Regular price $18.99
Sale price $18.99
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Replacement front cover dowels for use on Cummins 5.9L and 6.7L engines. Kit includes 2 dowels.   APPLICATION NOTES Replaces Cummins part number 3949326
Regular price $20.99
Sale price $20.99
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Replacement cylinder head dowels for use between the engine block and cylinder head. Kit includes 2 dowels.  APPLICATION NOTES Replaces Cummins part number 3902343. Fits 1989-2023 Cummins 12 valve...
Regular price $74.99
Sale price $74.99
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The Fleece Performance Replacement Filter is a cleanable cotton 8-ply filter. This innovative filter features a full round inlet radius that provides for a smooth transition while allowing for a la...
Regular price $329.99
Sale price $329.99
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Replace your leaking transmission lines with our heavy duty, high flow, flexible transmission lines. Our kit is the most complete replacement transmission line kit available for your LML truck!  ...
Regular price $329.99
Sale price $329.99
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Replace your leaking transmission lines with our heavy duty, high flow, flexible transmission lines. Our kit is the most complete replacement transmission line kit available for your L5P truck!  ...