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(888) 312-8812 Login SignupMUFFLER, ROUND STYLE 1
There’s nothing quite like a truck that purrs with power, and the Donaldson Exhaust Muffler knows exactly how to keep things running smooth and deep. At an impressive 51 inches of finely tuned steel, this round beauty dampens the raw growl of the engine just enough—turning that aggressive roar into a low, controlled rumble that commands attention. Like a firm but knowing hand on the throttle, the Donaldson M090544 tames excess noise and vibrations while keeping that satisfying hum alive. Built tough for long, punishing hauls, it lets exhaust flow freely while keeping emissions in check—because nothing should stifle performance when the road is begging to be conquered.
| Body Length | 44.44 in |
| Overall Length | 51.00 in |
| Attenuation Hr | 18 dBA |
| Attenuation Lr | 13 dBA |
| Back Pressure High-range | Hg2.99 inch Hg) |
| Back Pressure Low-range | Hg0.98 inch Hg) |
| Back Pressure Mid-range | Hg2.01 inch Hg) |
| Body Diameter Maximum | 9.01 in |
| Inlet Diameter | 4.02 in |
| Outlet Diameter | 4.02 in |
| Rated Flow Hr | 56.8 m³/min (2006 cfm) |
| Rated Flow Lr | 32.8 m³/min (1158 cfm) |
| Rated Flow Mr | 46.4 m³/min (1639 cfm) |
| Style | Style 1 |
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