2011 Freightliner B2, School Bus, Diesel Particulate Filter (DPF), Fits to: Freightliner B2, (Used) 2011 Freightliner B2, DIESEL PARTICULATE FILTER- (Inlet Facing Upward Direction, Outlet Facing Rear Direction) INLET EPN: Q629456 CPN: 2871535 FILTER EPN: Q621386 CPN: 4965287 SN: 33096102652 OUTLET EPN: Q621436 CPN: 4965253 ASM EPN: 205471A CPN: 2871539 SN: 13096101342 Engine: 2010 Cummins ISB 6.7L For condition chk pictures ( CRG HEAVY TRUCK PARTS ) 929 W PULASKI HWY ELKTON, MD 21921, Truck Year 2011, VIN 4UZABRDU7BCAU0284, 4UZABRDU7BCAU0284