Intake & Exhaust Systems | Components, , VOLVO VNM, Muffler, (GOOD USED) VOLVO SCR CATALYTIC REDUCTION ASSEMBLY PART# 21311951, DPF MUFFLER/EXHAUSTPULLED OFF A 2011 VOLVO VNM TRUCK, FITS 2011-2017, STOCK# 1990 ALL OUR PARTS SHIP OUT SAME DAY! TESTED! CALL (305)688-1101