BD Diesel Module - Idle Verifier (DFIV) 1998-audi-a4-quattro-avant-esi7945533 Front and rear manifolds with

Front and rear manifolds with integrated catalytic converters (sold as a set only*)

Replaces Old Rusted and Leaking Stock Exhaust Manifolds

Only use daytime running feature in accordance with local laws

High Flow 66mm Throttle Body Bore - Improved Air Flow for increased overall performance - 50 State Legal CARB Approved

BD Diesel Module - Idle Verifier (DFIV) 1998-audi-a4-quattro-avant-esi7945533 Front and rear manifolds withBD Diesel Performance is unique among its peers in that it designs, manufactures and distributes a wide range of products specifically engineered for performance diesel applications. Located in Abbotsford, British Columbia, Canada, BD's state of the art facility covers 65,000 square feet, and employs 60 plus highly trained individuals. The BD name became recognized in 1989, when the company introduced the first exhaust brake for the burgeoning diesel