When you're towing heavy loads or descending steep grades, maintaining control is critical. Exhaust brakes are the perfect upgrade to improve your 1998.5-2002 Dodge 2500 or 3500’s braking performance. By using backpressure from your 5.9L Cummins 24-valve engine, exhaust brakes help slow your truck without over-relying on your service brakes, reducing wear and increasing overall safety. Whether you’re hauling a trailer or navigating mountain roads, an exhaust brake ensures smoother and more controlled deceleration. Ram Cummins Fitments: 1998, 1999, 2000, 2001, 2002 Ram 5.9L Cummins.Submodel Fitments: Tradesman, Laramie, Laramie Longhorn, Big Horn, Limited, Lone Star, Power Wagon.Some exceptions apply, please see individual product pages for specific fitments.