Holley Aluminum Tall LS Valve Covers - Satin Black - Black - GM LS-Series R060004XL The ZK-40 was designed for

The ZK-40 was designed for use in races where a CIK-FIA approval was not required

Ford Mustang 1965-66

No provisions for exhaust heated chokes or EGR

Machined from 6061-T6 Billet aluminum and swiveling 360° for easy connection in any position

That's why every COMP Cams product offers the highest performance standards

Holley Aluminum Tall LS Valve Covers - Satin Black - Black - GM LS-Series R060004XL The ZK-40 was designed forHolley's tall LS valve covers are the latest addition to our extensive line of LS engine components that will add a custom touch to your engine bay and help you to stand out from the crowd. These valve covers were designed to add an additional 0. 54"? of internal clearance over factory height valve covers. The valve covers retain Holley's signature integrated angled coil mounts, and the hi tech look and performance of coil on cover applications. The