JMF Manifold O-Rings (Full Set) for Evo 4-9 Street/Race Sheridan Engineering By replacing the rubber mount

By replacing the rubber mount with this solid 6061 billet unit you are able to get rid of the unwanted slop and flexing of the factory mounts

and an engine runs at a high speed

We have proven time and time again that GrimmSpeed gaskets can outlive the factory multi-layer gaskets

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giving the RS the flow it needs

JMF Manifold O-Rings (Full Set) for Evo 4-9 Street/Race Sheridan Engineering By replacing the rubber mountJMF replacement oring set for the Evo 4 9 Street and Race intake manifolds. Includes 5 o rings for the head flange and 4 o rings for the plenum bottom to runner section connection. Made from high temp silicone. Vehicle Fitment: Fits JMF Street Race Manifolds For Evo 4 5 6 7 8 9 Includes: (9) O Rings Shipping Times: Usually ships in 1 3 days. See more JMF Products