300 Ford Intake-Exhaust Gasket

The MR. GASKET 300 Ford Intake-Exhaust Gasket (model 260) is a precision composite manifold gasket engineered for Ford inline-6 engines requiring reliable intake-to-exhaust sealing. This gasket addresses one of the most critical pressure points in any engine build: the manifold interface where combustion pressures, temperature cycling, and vibration demand absolute sealing integrity. Whether you're rebuilding a classic Ford six-cylinder, upgrading intake components, or restoring original performance, this gasket prevents dangerous compression loss and exhaust blowby that compromises power delivery and fuel economy.

Constructed from composite material, the 300 Ford Intake-Exhaust Gasket features a rectangular port design measuring 1.550 x 1.780 inches—the precise OEM specification for Ford inline-6 manifold applications. Composite gaskets outperform traditional cork or paper alternatives by resisting heat distortion, oil degradation, and compression creep over extended engine cycles. The gasket's engineered thickness and material composition maintain clamping force across repeated thermal expansion cycles, eliminating the need for frequent re-torquing that plagues inferior alternatives. This design prevents intake vacuum leaks that rob idle quality and fuel trim, while simultaneously containing exhaust gases that would otherwise degrade underhood components and create performance inconsistencies.

Mechanics and engine builders rely on the MR. GASKET 260 when pursuing reliable, repeatable results on vintage Ford sixes—particularly in hot rod, restoration, and light-duty truck applications where manifold separation leads to chronic lean conditions and cylinder-to-cylinder imbalance. Installation requires standard manifold bolt torque procedures; apply a thin gasket sealant to both sides if operating in high-vibration or forced-induction contexts. This single gasket ships ready to install with no additional machining or modification, making it the go-to choice for OEM-specification sealing without compromise. Pair it with quality manifold hardware and proper bolt sequencing for maximum durability.