SBC Fab Valve Cover Set Dual Crossover Breather

The SBC Fab Valve Cover Set Dual Crossover Breather from KEVKO Oil Pans & Components is purpose-built for small-block Chevrolet engines that demand serious crankcase ventilation management. This dual crossover breather system addresses a critical pain point for modified and high-performance SBC builds: uncontrolled blow-by gases that compromise seal integrity, degrade oil quality, and create messy engine bay conditions. Whether you're running a street machine, bracket racer, or shop engine, proper breather routing with dual crossover capability ensures consistent crankcase pressure and extended component life.

KEVKO's fabricated valve cover design incorporates dual crossover breather ports that allow simultaneous evacuation of crankcase vapors from both cylinder banks, eliminating the single-point bottleneck found in stock or single-breather setups. The dual crossover configuration reduces back-pressure, stabilizes oil mist separation, and minimizes the risk of oil carryover into intake manifolds or catch cans. Built from durable materials and engineered to OEM SBC bolt-hole patterns, this valve cover set maintains precise fitment while providing the breather outlet flexibility that modern performance systems require. The compact 8.5 x 5.9 x 22.6-inch profile ensures clearance compatibility with most intake manifold and header combinations.

This breather set suits builders and enthusiasts upgrading naturally aspirated or forced-induction small-block applications where factory emissions hardware has been removed or modified. Fuel-injected, carbureted, or alcohol-burning platforms all benefit from the improved crankcase evacuation this dual crossover system provides. Installation pairs seamlessly with external catch cans, separator tanks, or closed-loop recirculation systems, giving you complete control over blow-by management. At 7.95 lbs, the set offers minimal weight penalty while delivering measurable reliability gains during extended cruising, sustained boost, or high-RPM competition.