Accu Seal Pro Intake Gaskets; fits Ford FE 390-428ci V8 with large ports. Gasket Material: Perforated metal core with proprietary Graphlon coating. SCE’s Graphlon coating provides lubricity on both sides of the gasket to eliminate fretting (splitting) from expansion/contraction. Port Dimensions: 1.450″ x 2.405″; Thickness: .062″. These gaskets are similar to OEM metal core intake gaskets suitable for long duration use without degradation from coolant & oil soaking. Equivalent to Victor-Reinze/MAHLE MS15166X, Fel-Pro MS90145. Package Contents: 1 Pair with cork/rubber end seals and tapered distributor o-ring.