2001-2020 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.

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