Experience improved exhaust performance with the Donaldson M090074 Round Muffler. Designed for medium to heavy-duty diesel engines—including popular models like Caterpillar’s 3406B—this genuine exhaust component offers efficient emission control and enhanced airflow. Precision-engineered for durability, it’s the perfect upgrade for truck, Jeep, and 4WD enthusiasts looking to optimize their engine performance.

Key Specifications

• Inlet/Outlet Diameters: 5.03 in
• Body Diameter: 9.01 in
• Body Length: 44.44 in
• Overall Length: 51 in
• Flow Ratings: LR, MR, HR performance levels
• Noise Attenuation: 13 dBA to 18 dBA

Features & Benefits

• Enhanced Exhaust Performance: Optimized design increases efficiency
• Superior Emission Control: Reduces back pressure for cleaner operation
• Durable Construction: Built to withstand the demands of heavy-duty use
• Genuine Quality: Backed by Donaldson’s 50-year legacy of excellence
• Fast Shipping: Items typically ship within 1 business day with no minimum order

Crafted with precision and built to last, this authentic component reinforces the reputation of Everything Truck Parts as your reliable source for high-quality aftermarket solutions. For more genuine Donaldson products, explore our collection on the Everything Truck Parts website here.