2001-2024 GM 6.6L Duramax Coolant Block-Off Plate - Billet Aluminum - Black
The OEM block off plate uses a gasket and can leak over time. The PPE billet block off plate is thicker and uses an O-ring seal. The O-ring is made from Viton more maximum longevity. The PPE billet block off plate installs using the OEM fasteners.
- CNC machined billet aluminum
- Leakage-free O-ring face seal design
- Viton O-ring included