Dieselr Aluminized 3" Cat & DPF Race Pipes | Ram 1500 3.0L EcoDiesel 2014-2018The Dieselr Aluminized 3" Cat & DPF Race Pipes (20142018 Ram 1500 3. 0L EcoDiesel) are built for light duty diesel owners who expect the same strength and precision as heavy duty platforms. Designed from premium 3 inch aluminized steel, this system improves exhaust flow, lowers EGTs, and maintains consistent performance across miles of towing and commuting. Each Dieselr race pipe features mandrel bent tubing and welded flanges for smooth transitions