Shop with Blessed Performance for the Merchant Automotive Billet Coolant Block Off Plate for your 2001-2022 GM 6.6L LB7/LLY/LBZ/LMM/LML/L5P Duramax diesel. Merchant Automotive designed this durable replacement plate to eliminate the coolant leaking issue on your Duramax engine. The factory coolant block-off plate has a cast design with a gasket. Over time, this plate commonly begins to leak. Merchant Automotive manufactured this billet block-off plate with a built-in O-ring seal for a leak-free installation.
Highlights:
- Billet Construction
- Replaces Factory Block-Off Plate
- Installs Using Factory Bolts & Hardware