Increase your driving confidence and towing safety with the superior retarding performance of the BD Brake for ’89-’98 5.9 liter Cummins engines. Using BD’s exclusive Variable Orifice Technology, BD’s turbo-mount design bolts in place of the factory elbow between the turbo and the exhaust system, providing peak retarding power throughout the engine’s rpm range—not just at high rpm like other brands.
Designed for years of reliable operation, the BD Brake’s rugged cast-iron housing incorporates BD’s exclusive AlumiBronze bushing and piston ring-sealed, stainless steel butterfly shaft that has proven to stand up under the harsh, high-heat conditions of the exhaust environment. Actuated by a powerful, three-inch vacuum cylinder, the offset butterfly valve won’t stick, and has been strategically placed in the elbow so that it won’t impede exhaust flow when in the open position. The BD brake incorporates a threaded port for mounting an exhaust gas temperature probe, as well as a 1/4-inch stainless steel port that can be used to monitor the brake’s retarding performance.
Controlled by a lighted On/Off toggle switch for automatic transmissions, or an optional stick-mounted rocker switch for manual transmissions, the BD brake communicates with the engine’s electronic idle verification board for quick engagement.
Automatic-equipped trucks require a torque converter lockup controller in order to electronically control torque converter clutch engagement to maximize braking to the rear tires.
NOTE: All 1989-1998 12 Valve Dodge Cummins require BD's 60# Exhaust Valve Spring Kit which can be purchased from below.
NOTE: All 1989-1993 12 Valve Dodge Cummins require BD's Pipe Adapter Kit which can be purchased from below.
NOTE: All 1996-1998 12 Valve Dodge Cummins equipped with "California Spec" engines (EGR) require BD's EGR Operational Kit which can be purchased from below.
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