Dodge Durango, Dakota, Ram 4.7 JBA Cat4ward® Headers are the perfect upgrade for today's emissions controlled cars, trucks and SUVs. Engineered with heavy duty features and patented technology, these headers deliver serious performance gains without compromising your vehicle's emissions equipment. The bolting on a set of precision made JBA Cat4ward® Headers increases your engine's breathing ability and overall efficiency. The result is a significant increase in horsepower and torque throughout the RPM range and a reduction in the under-hood temperature. You will also improve the throttle response, and in some cases, your vehicless fuel economy. Make: Dodge Tube Size: N/A Model: Ram, Dakota, and Durango Year: 02-05 Engine: 4.7L Application: Ram, Dakota, and Durango Notes: Direct replacement of factory manifold, installation hardware kit included. Header Features Mandrel-bent stainless steel primary tubes Patented JBA Firecone® collector* Factory style emission connections Extra thick collector domes C.A.R.B. certified executive order number 3/8’ thick CNC laser-cut flanges Oversized exhaust ports * For most applications Header Benefits Best flow, durability, improved throttle response Race proven technology for maximum hp/tq gains Easier installation Will not distort like lesser quality headers, no leaks 50 state smog legal Resists warping, prevents leaks, & easier install Increased flow, accommodates cyl. head porting The Anatomy of a JBA Header JBA shorty headers are one of the best performance upgrades available for any application. Hot Rod magazine rated headers as one of the top 10 power parts installed on a vehicle. JBA shorty headers are significantly less restrictive than the stock manifolds on a vehicle and dramatically increase the power and efficiency of an engine. JBA's original shorty design is an innovation of the old long tube header. The new shorty designs yield high performance gains that hot rodders and enthusiasts look for, and are 50 state smog legal. With durable stainless steel construction that can survive the abuse of racing, towing, and daily driving, these headers can take a beating. With heavy duty features and patented technology, like the JBA Firecone® collector,* JBA shorty headers have the capacity to produce more power than any other shorty headers on the market. Each system includes high quality hardware and thorough instructions for a professional no-leak installation.