Cometic MLS Head Gasket 84mm Bore .060in for Select 1990-2000 Mazda 323/Miata/Protege (1.8L) C4568-060

Fits select 1990-2000 Mazda 323, Miata, and Protege (1.8L DOHC BP-series engines).

The Cometic Multi-Layer Steel (MLS) head gasket is engineered to provide the high-performance sealing required for modern, high-output engine builds. Constructed from multiple layers of embossed stainless steel, this gasket offers superior rebound characteristics and corrosion resistance compared to standard composite gaskets. The outer layers are finished with a 0.25-micron layer of Viton rubber—a fluoroelastomer capable of withstanding temperatures up to 250°C (482°F)—ensuring a reliable seal across a variety of surface finishes and load conditions.

Designed to thrive in harsh environments, the Cometic MLS design requires less clamp load than traditional gaskets, which reduces bore distortion and helps maintain consistent load distribution across the sealing surface. This is an ideal solution for both aluminum-to-aluminum and aluminum-to-iron head and block combinations, as it effectively manages the different rates of thermal expansion and the resulting shearing force between the two materials.

• Manufacturer Part Number: C4568-060
• Bore Diameter: 84mm
• Thickness: .060 inch
• Material: Multi-Layer Stainless Steel (MLS)
• Coating: Viton rubber coated outer layers
• Application: Replaces factory head gasket for improved sealing in forced induction or high-compression naturally aspirated builds