Smeding Diesel Billet Coolant Block Off Plate for 6.6L Duramax 2001-2025
$42.00
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Eliminate rear engine coolant leaks permanently with our upgraded block-off plate! Fits 2001-2025 Duramax 6.6l LB7, LLY, LBZ, LMM, LML and L5P! Designed as a direct improvement over factory covers, our billet aluminum rear cover plate features a robust, thicker design and a built-in square-cut O-ring—no gasket needed. Unlike the original equipment, which can develop leaks as it ages, this precision-machined solution offers a long-lasting seal to keep your cooling system leak-free for the long haul.
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