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The JBA premium header gasket pair for Ford 5.4L/5.8L 4V DOHC applications, including Mustang GT500 ports, provides a thick, precision flange seal made to match JBA headers. Supplied as a pair for replacement installs, it supports accurate port mating on 4-valve DOHC engines and GT500 applications. Constructed from a specially formulated gasket material, these gaskets resist exhaust pressures up to 3700 psig and temperatures to 1100°F.
JBA Ford 5.4L/5.8L 4V DOHC/Ford Mustang GT500 Oval Port Header Gasket - Pair
