High-Strength Aluminum Duramax Coolant Block-Off Plate for 2001–2017 LB7, LLY, LBZ, and LMM Engines

Description

Upgrade your rear engine cover and stop the coolant leaks for good!

Our blocking plate is thicker than the stock plate and has an integral square cut O-ring with no gasket required. OE covers are prone to leakage over time, our billet coolant block off plate with an integral O-ring is an upgrade for your rear engine cover and will the stop the coolant leaks for good.

Direct Replacement for GM P/N: 97941204

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