SKU: CAGC5391
UPC: 191070024338
MPN: C5391
The Rear Main Seal for Ford 351 (#85339) by Cometic Gaskets is designed to prevent oil leakage at the crankshaft's aft end, a critical failure point in high-mileage and modified 351 engines. This seal is essential for those rebuilding classic muscle cars, restoring performance trucks, or refreshing short-blocks, as it helps maintain engine cleanliness and prevents costly damage.
Engineered for durability, this rear main seal is manufactured to maintain sealing integrity across a wide temperature range, ensuring reliable performance during both cold starts and high-load driving. Its geometry is specifically matched to Ford 351 crankshaft journals, providing a secure fit that prevents bypass and resists extrusion under peak crankcase pressures.
Ideal for both street and track applications, this component is favored by mechanics and engine builders for its proven reliability in 351 Windsor and 351 Cleveland platforms. Installation requires engine removal or transmission drop-down access, making it a critical part for any serious engine rebuild.
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