The Donaldson M090544 is a high-performance round muffler engineered to optimize exhaust flow while reducing noise in heavy-duty trucks, industrial facilities, and automotive applications. Crafted from durable materials, this authentic muffler is built to withstand demanding conditions while delivering efficiency and longevity for your vehicle. Thanks to advanced engineering, the M090544 maintains optimal system performance even under intense use.

Technical Specifications

• Body Diameter Maximum: 150 mm / 5.9 inches
• Inlet Diameter: 125 mm / 4.9 inches
• Outlet Diameter: 130 mm / 5.1 inches
• Overall Length & Body Length: 300 mm / 11.8 inches (overall), 280 mm / 11 inches (body)
• Rated Flow Rates:
  • Low: 120 m³/min (4,236 cfm)
  • Medium: 150 m³/min (5,295 cfm)
  • High: 180 m³/min (6,354 cfm)
• Back Pressure:
  • Low: 12 mm Hg / 0.47 in Hg
  • Medium: 15 mm Hg / 0.59 in Hg
  • High: 20 mm Hg / 0.79 in Hg
• Noise Attenuation Levels:
  • Low: 28 dBA
  • Medium: 32 dBA
  • High: 36 dBA

The Donaldson M090544 muffler combines precision design with robust performance, resulting in quieter operation and enhanced exhaust efficiency—even under heavy loads. Every order is processed promptly, with genuine parts ensuring authenticity and reliability. For more options and detailed product support, visit our Donaldson collection or complete your setup with our Exhaust Accessories.