Fits the following 2021 Chevrolet Silverado Submodels:
- 3500 CREW CAB ONLY, 3500 REGULAR (CAB ONLY), 3500 REGULAR CAB, CREW CAB 1 TON CHASSIS 137.0, EXTENDED CREW CAB 1 TON CHASSIS 161.5, REGULAR CAB 1 TON CHASSIS 137.0, REGULAR CAB 1 TON CHASSIS 161.5, 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, 8 Cyl 6.6L Diesel