A stack muffler with a < cite index="60-1">10-inch diameter body and 5-inch centered inlet/outlet, roughly 44 inches in shell length and 51 inches overall</cite>, used to reduce exhaust noise on vertical stack exhaust systems typically found on Class 8 trucks. It's cross-referenced to equivalent parts including Walker 22920, Grand Rock M-465, Paccar M10682, and Donaldson M100465.
