Experience unparalleled performance with the Donaldson M101158 muffler—a round-style silent partner muffler engineered specifically for heavy-duty truck applications. Made in the United States, this genuine Donaldson component delivers outstanding durability and effective sound attenuation, ensuring your truck meets both performance and noise reduction standards. Whether you're a seasoned professional or a truck enthusiast, this component is built for reliability and long-lasting performance.

Technical Specifications

• Body Diameter: Approximately 255 mm (254–256 mm range)
• Body Length: Nearly 1129 mm
• Overall Length: About 1295 mm
• Inlet/Outlet Diameters: Precisely engineered to support optimal flow
• Sound Attenuation: 19 dBA at low frequency and 23 dBA at high frequency
• Package Details: Designed for secure transport; specific dimensions and weight provided upon request

Key Benefits

• Genuine Donaldson branding assures quality and authenticity
• Made in the United States using high-grade materials for extreme conditions
• Engineered for heavy-duty truck applications, delivering dependable performance
• A silent partner muffler designed to reduce noise without sacrificing power

Quick Shipping & Guarantee

• Ships within 1 business day with no minimum order requirements
• Purchase the Donaldson M101158 muffler with confidence, knowing you're getting one of the best prices on a Donaldson muffler

For more genuine Donaldson products, visit our Donaldson collection.