Fits the following 2018 GMC Sierra Submodels:
- 1 TON CREW CAB, 3500 CREW CAB LONG BOX, 3500 CREW CAB ONLY, 3500 CREW CAB STANDARD BOX, 3500 DOUBLE CAB LONG BOX, 3500 REGULAR CAB, CREW CAB 1 TON, CREW CAB 1 TON 137.0, CREW CAB 2500 LONG BOX, CREW CAB 8' BOX 3/4 TON, DOUBLE CAB 2500 LONG BOX, EXTENDED CAB 1 TON, EXTENDED CAB 8' BOX 3/4 TON, REGULAR CAB 1 TON, REGULAR CAB CHASSIS 1 TON 137.0, REGULAR CAB CHASSIS 1 TON 161.5 | 8 Cyl 6.0L, 8 Cyl 6.0L Flex, 8 Cyl 6.6L Diesel