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Edelbrock 1/2" base-to-upper spacer plate kit for Performer and Performer RPM 5.0 manifolds raises the upper plenum 1/2" and includes gaskets and bolts for installation. The spacer increases valve cover to plenum clearance—useful when running taller valve covers or roller rockers—adds heat insulation between upper and lower manifolds, and the extra runner length can help low-end torque. Fits PN 3821 and PN 7126 based manifolds.
Edelbrock Fiber Laminate Spacer 3821 7126
