Cometic C4128-051 MLS Cylinder Head Gasket for Jaguar - 4.2L XK6

The Cometic C4128-051 is a multi-layer steel (MLS) cylinder head gasket engineered specifically for Jaguar 4.2L XK6 inline-six engines found in 1973-1992 models. This precision-manufactured gasket features Cometic's proven MLS construction that provides superior sealing performance under high cylinder pressures and extreme temperatures.

Key Specifications:

• Gasket thickness: .051 inches (1.30mm) compressed
• Bore diameter: 3.670 inches (93.2mm)
• Multi-layer steel construction with stainless steel outer layers
• Embossed stopper bead design for enhanced combustion sealing
• Compatible with Jaguar XK6 4.2L engines (1973-1992)

Cometic MLS gaskets utilize multiple layers of stainless steel with a viton rubber coating to create a reliable seal that accommodates cylinder head movement and surface irregularities. The embossed stopper layer controls gasket compression and prevents over-torquing, while the stainless steel construction resists corrosion and maintains integrity through repeated heat cycles. This gasket is ideal for both stock rebuilds and performance applications where reliability is critical.

Note: Proper surface preparation is essential for MLS gaskets. Cylinder head and block surfaces should be machined to a smooth finish (30 RA or better) for optimal sealing performance.