2016 Detroit DD13, , Exhaust Manifolds, Fits to: , (Used) 2015 Detroit DD13, EXHAUST MANIFOLDS- Part Number: A4721420901, A4721421001001, ESN: 471927S0391464, Material: cast iron, Reference images for condition For more information about this item, give us a call. We ship Worldwide! (CRG HEAVY TRUCK PARTS) 929 W PULASKI HWY ELKTON, MD 21921, Serial# 471927S0391464,, Casting# 471927S0391464,, Truck Year 2016