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Duramax Billet Coolant Block Off Plate
Fits 2001-2018 Silverado/Sierra 2500HD/3500HD 6.6
Replaces GM Part# 97941204
Upgrade your rear engine cover and stop the coolant leaks for good!
Fleece Performance's 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.