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JBA premium header gasket for 1991–1999 Jeep 4.0L inline-6 rectangle ports. This gasket seals the header flange to the cylinder head to prevent leaks and assist proper exhaust flow when fitting JBA headers. Made extra thick from a formulated gasket material for an exact port match with JBA headers; designed to withstand exhaust pressures up to 3700 psig and temperatures to 1100°F for dependable performance.
JBA 91-99 Jeep 4.0L L6 Rectangle Port Header Gasket
