429-460 Gasket

The 429-460 Gasket by Mr. Gasket (MPN 5838) is a precision intake manifold gasket engineered for Big Block Ford engines. This Ultra-Seal composite gasket is manufactured to exacting tolerances, delivering a reliable seal under sustained load and high-temperature operating conditions. The 0.06-inch thickness and oval port configuration (2 x 2.26 inches) are optimized for the specific combustion chamber geometry of Big Block Ford powerplants, ensuring proper intake tract sealing without compromising air-fuel distribution.

The composite construction of this Mr. Gasket 5838 intake manifold gasket provides superior durability compared to conventional paper or cork alternatives. The material resists thermal cycling and chemical degradation from combustion byproducts, maintaining seal integrity across extended service intervals. The precise port dimensions ensure minimal flow disruption while preventing vacuum leaks—a critical factor in maintaining correct fuel metering and emissions control performance on stock or mildly modified Big Block applications.

Technicians and engine builders working on Big Block Ford restoration, performance tuning, or routine maintenance rely on OEM-equivalent gaskets like this 429-460 unit to ensure proper sealing during manifold installation or replacement. The gasket ships as a complete kit, allowing for proper torque sequencing and leak-free assembly. Whether reinstalling an original manifold or upgrading to an aftermarket intake, this Mr. Gasket product delivers the precision fit demanded by serious engine work.