SKU: MRG378
UPC: 084041003787
MPN: 378
The Bb Chrysler V.C. Gasket by Mr. Gasket is a precision valve cover gasket engineered for Mopar B and RB-series engines, delivering the sealed performance critical to engine longevity and oil retention. Whether you're rebuilding a classic muscle car, performing scheduled maintenance on a performance Dodge or Plymouth, or restoring a vintage Chrysler platform, this gasket pair eliminates oil weeping and maintains crankcase ventilation integrity. Valve cover gaskets are often overlooked during routine service, yet they're essential to preventing oil leaks that compromise engine cleanliness and lead to costly damage over time.
This gasket is constructed from a cork and rubber composite material, 0.187 inches thick, a proven formula for conforming to valve cover surfaces while resisting oil degradation and thermal cycling. The cork-rubber blend strikes the ideal balance between conformability—critical for engine blocks with minor surface irregularities common in older powerplants—and durability under sustained heat exposure. The gasket pair is precision-cut to OEM specifications, ensuring proper fitment without requiring custom trimming, and the 0.187-inch thickness accommodates factory valve cover profiles without modification to bolt torque or engine geometry.
Technicians and enthusiasts restoring or maintaining Mopar B-block (340, 360, 383) and RB-block (400, 413, 426, 440) engines will find this gasket pair indispensable for eliminating leaks that plague aged engines and prevent proper oil sampling. Installation is straightforward: clean both valve cover and cylinder head surfaces to bare metal, apply a light machine oil to the new gasket for sealing, install, and torque valve cover bolts to factory spec in a cross pattern. This Mr. Gasket offering is the economical, reliable choice for anyone seeking OEM-quality sealing without premium pricing, backed by decades of Mopar performance gasket heritage.
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