Description
Merchant Automotive Billet Coolant Block Off Plate, Duramax | 2001 - 2026
On the rear of the 6.6L Duramax diesel engine there is a coolant block off plate (GM 97941204). The factory plate is cast aluminum and seals with a gasket. Over time, warpage or gasket failure can let this plate leak coolant. The Merchant Automotive Billet Coolant Block Off Plate replaces the factory cast plate with a billet 6061 aluminum plate and a built in O-ring in place of the factory gasket. It fits 2001-2026 Chevy Silverado and GMC Sierra 2500HD and 3500HD trucks with the 6.6L Duramax diesel (LB7, LLY, LBZ, LMM, LML and L5P).
Replace the factory plate if you find coolant leaking from the block off plate at the rear of the engine, or if the factory plate is corroded. It is also a good upgrade when other work at the rear of the engine gives you access to the plate.
Product details
- Billet 6061 aluminum construction
- Black anodized finish
- Built in O-ring, no gasket needed
- Reuses your factory hardware
- Machined in house by Merchant Automotive in the USA
- (1) Merchant Automotive billet coolant block off plate
- (1) O-ring, installed in the plate
- Hardware is not included. The plate is designed to reuse the factory bolts.
Fitment / application
Merchant Automotive Billet Coolant Block Off Plate, Duramax | 2001 - 2026
Confirm year, engine, transmission or axle configuration before ordering.
Manufacturer product reference: Specifications and fitment.
