Lower Seal for #6500 & 6504

The Lower Seal for #6500 & 6504 by COMP Cams is a critical replacement component designed for high-performance valve cover applications. This seal is engineered for builders and mechanics who demand reliability in engine dress-up and gasket systems, particularly when working with COMP Cams' premium valve cover lineup. Whether you're rebuilding a classic muscle car engine or maintaining a modern performance platform, this lower seal ensures a complete, leak-free seal between your valve cover assembly and cylinder head.

Constructed to match the exacting tolerances of COMP Cams' #6500 and #6504 valve cover designs, the lower seal features engineered elastomer material that withstands engine heat, oil exposure, and thermal cycling without degradation. The compact design—measuring 3.55 by 1.05 by 4 inches—integrates precisely with the valve cover flange geometry, preventing oil seepage at the critical interface point where the cover meets the cylinder head. Its lightweight construction (0.12 lbs) contributes to zero performance penalty while delivering the durability required for street, strip, and show applications alike.

This replacement seal is essential for anyone performing valve cover maintenance, gasket replacement, or engine rebuilds on vehicles equipped with COMP Cams valve covers. Technicians and enthusiasts benefit from stocking this OEM-specification component to avoid delays during service intervals or performance engine builds. Direct compatibility with models #6500 and #6504 eliminates guesswork during installation, ensuring proper sealing geometry and preventing costly oil leaks that compromise engine bay cleanliness and long-term reliability.