Complete coverage from end to end. For more than 50 years, Donaldson has been a leading supplier of exhaust systems, components and accessories for medium and heavy-duty diesel powered equipment. Seven inlet/outlet styles in both aluminized and stainless steel. Many different configurations to fit/adapt to your vehicle/equipment. High temperature paint available on select models. A full offering of accessories to make sure your exhaust system fits and is mounted properly – clamps, hangers, connectors, tubing, tailpipes and all associated components. Low back pressure for better fuel economy and efficient engine performance. Corrosion resistant materials for long service life. Mufflers for every budget – with good, better and best alternatives