Airflow Research Engine Valve Cover

Airflow Research Engine Valve Covers: Form and Function from a Performance Legend

Airflow Research (AFR) has been synonymous with high-performance engine components since its founding, earning its reputation by pushing the boundaries of cylinder head technology for street machines and professional race teams alike. That same engineering philosophy extends to their line of engine valve covers — components designed not only to protect your valvetrain but to visually reinforce the commitment to performance under the hood.

CNC-Engraved Cast Aluminum Construction

AFR valve covers feature CNC engraving and a polished finish , immediately setting them apart from generic stamped-steel or plain billet alternatives. Constructed from aluminum, they are available in black powdercoated and polished finishes — giving builders the flexibility to match the aesthetic of their engine bay, whether it's a show-ready build or a track-focused machine.

AFR valve covers are available in both standard and tall heights, feature perimeter bolt mounting, carry the signature AFR logo on the top, and include rubber grommets and mounting hardware. Tall-height versions are particularly useful for builds running larger-than-stock roller rockers or valvetrain components that require additional clearance — a common consideration when pairing these covers with AFR's own high-performance cylinder heads.

Engineered to Work with AFR Cylinder Heads

One of the most compelling reasons to choose AFR valve covers is how seamlessly they integrate with the rest of the AFR ecosystem. AFR valve cover gaskets are made using premium materials for a leak-free seal, and are designed exclusively for fitment with AFR heads. This level of system-level thinking — from the combustion chamber all the way to the valve cover — reflects the brand's deep roots in precision manufacturing.

Founded by Ken Sperling, Air Flow Research pioneered the process of CNC porting cylinder heads, a practice that is now common throughout the automotive industry. AFR utilizes modern manufacturing techniques including five-axis CNC machines, and manufactures each piece in their Valencia, California facility. That same domestic, precision-first manufacturing ethos is carried through into their valve cover lineup.

Application Coverage: Small Block Chevy, Big Block Chevy, Small Block Ford & More

AFR's product line caters to a broad spectrum of engine platforms, including small block and big block Chevrolet, LS series engines, Ford, and Mopar. Whether you're finishing off a classic SBC build or topping a stout small block Ford, AFR offers a valve cover to match. The BBC CNC engraved valve cover is available in a black powdercoat finish and includes rubber grommets and baffles for PCV. The inclusion of PCV baffling is a practical detail that matters for street-driven applications, helping to control oil mist and maintain proper crankcase ventilation.

Why Choose AFR Valve Covers?

• CNC-engraved cast aluminum for a premium appearance and lasting durability
• Polished and black powdercoat finish options to suit any build style
• Standard and tall height configurations for valvetrain clearance flexibility
• Includes rubber grommets and PCV baffles for a complete, street-ready installation
• Designed to complement AFR cylinder heads for a cohesive, system-level engine build
• Made in the USA at AFR's Valencia, California facility

For builders who have already invested in AFR's world-class cylinder heads, capping the build with AFR valve covers is a natural finishing touch — one that ties together the aesthetics of the engine while reflecting the same quality standards found throughout the AFR lineup. Browse the full selection of engine valve covers or explore everything Airflow Research has to offer for your performance build.