Upgrade your rear engine cover and stop the coolant leaks for good!
This blocking plate from Fleece 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
Compatible with the following 6.6L Duramax Diesel Engines:
2001-2004 LB7
2004.5-2005 LLY
2006-2007 LBZ
2007.5-2010 LMM
2011-2016 LML
2017-2023 L5P
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