Big Chief Intake Gasket .125 Thick

The Big Chief Intake Gasket .125 Thick (SCE118106) is a precision composite intake manifold gasket engineered for big block Chevy engines equipped with Dart Big Chief cylinder heads. Built to exacting OEM specifications, this gasket seals the critical interface between the intake manifold and cylinder head port surfaces, preventing coolant and fuel mixture leakage that can compromise engine performance and reliability. Whether you're rebuilding a classic muscle car, tuning a street engine, or maintaining fleet vehicles, a quality intake gasket is foundational to proper combustion chamber sealing and longevity.

Manufactured from composite material at 0.125 inches thick, the Big Chief Intake Gasket features a rectangular port design measuring 1.875 x 2.425 inches, matched precisely to Dart Big Chief head specifications. The composite construction provides superior thermal stability and resilience under the extreme heat and pressure cycles of high-performance and heavy-duty engines, resisting gasket creep and blow-by that compromise efficiency over time. The 0.125-inch thickness balances sealing force with proper combustion chamber geometry, ensuring consistent ring seal and optimal compression ratios without requiring head milling or shim adjustments.

Technicians and engine builders working on big block Chevy platforms with Dart Big Chief heads will find this gasket essential for any top-end rebuild or freshening. Installation is straightforward: place gaskets on the cylinder head ports, apply a thin bead of gasket sealer to the manifold sealing surfaces, and torque the intake manifold to manufacturer specifications in a cross pattern to ensure uniform compression. This gasket integrates seamlessly into any intake manifold kit and is compatible with stock, performance, and racing applications where Dart Big Chief heads are specified.