Precision-machined billet aluminum block-off plate compatible with all Duramax diesel engines from 2001 to 2017, including LB7, LLY, LBZ, LMM, and L5P models.

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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