BD Diesel 2023331 2004.5-2005 Dodge Ram Cummins diesel exhaust brake. This turbo mount exhaust brake bolts in place of the existing elbow where it is clamped to the turbo outlet and exhaust system. Bd's variable orifice technology has been incorporated into this air engagement design that results in peak retarding power throught the engine's operating rpm. The spring loaded air cylinder closes the offset stainless steel butterfly and stainless steel shaft which rotates in a special bushing material to ensure that the butterfly does not stick closed or open. The butterfly has been positioned in the exhaust brake elbow so when open exhaust flow is not reduced. A threaded port for mounting an exhaust temperature probe and a port with 1/2 stainless steel line connected is a simple method to monitor retarding performance. BD's lighted on-off toggle switch is wired into an electronic idle verification board for quick exhaust brake engagement. The durable air compressor that is included can also be used for other applications. BD Diesel 2023331 exhaust brake 2004.5-2005 Dodge Cummins 2023331APPLICATIONS:: 2004.5-2005 600 Cummins turbo mount air We welcome CANADIAN customers! For ordering information, click on "Canadian Order Info" at the top left side of this page. LOW COST SHIPPING! Just $12.95 to ship your entire order by U.P.S. ground within the continental United States. Purchase any quantity of items and you pay just $12.95 to have it shipped! The more you order, the more you save! (Orders to Hawaii, Puerto Rico, Virgin Islands, and some parts of Alaska will have additional shipping charges. Customers located in these areas will be emailed the shipping costs for approval before we ship the order.) We use Postal Priority for APO and FPO addresses only. Additional shipping charges may apply to these addresses.