Edelbrock 1/2In Upper Manifold Spacer Kit for Ford Performer RPM II 5 0L Manifold (7123)

If you're working on a 1986-1995 Ford Mustang with the Edelbrock Performer RPM II 5.0L manifold (PN 7123), this 1/2" upper manifold spacer kit from Edelbrock is what you'll need. This kit is designed to give you a bit more room between your valve covers and the upper intake plenum, which is often necessary when you're running taller valve covers, like those needed for roller rockers. It also adds a bit of runner length, which can help produce more torque, and it provides some heat insulation between the lower and upper manifold sections.

The kit includes a 7/16" thick spacer made from wood fiber laminate, two .045" thick gaskets, and new longer fasteners to accommodate the added thickness. This combination brings the total spacer height to 1/2". It's a straightforward way to solve clearance issues and potentially gain a little extra torque on your 5.0L build.