Cometic Gasket Head Gasket

2013–2020 Subaru BRZ / 2017–2020 Toyota 86 FA20D / 4U-GSE Engine

C4588-050

Overview:

The Cometic MLS (Multi-Layer Steel) head gasket is engineered specifically for the Subaru BRZ (2013–2020) and Toyota 86 (2017–2020) equipped with the FA20D and 4U-GSE engines. Designed to provide a reliable and durable seal between the cylinder head and engine block, this gasket ensures optimal engine performance and longevity. Ideal for enthusiasts and professionals seeking a high-quality replacement or upgrade, the Cometic head gasket delivers superior sealing under demanding conditions.

Whether you are rebuilding your engine or upgrading for enhanced durability, this gasket offers peace of mind with its robust construction and resistance to heat and corrosion.

Key Features:

Cometic’s head gasket incorporates advanced materials and design elements to meet the rigorous demands of modern performance engines:

• Constructed from three to five layers of stainless steel for exceptional strength and durability
• Outer layers embossed and coated with heat-resistant Viton rubber on both sides for superior sealing
• Viton coating withstands temperatures up to 250°C (482°F), ensuring reliability in high-heat environments
• Designed to accommodate a variety of harsh sealing environments, load conditions, and surface finishes
• Precision fit for an 89.5mm bore, matching OEM specifications for the Subaru FA20D and Toyota 4U-GSE engines
• MLS design allows for excellent rebound and resistance to corrosion, reducing the risk of leaks
• Thickness of 0.050 inches, optimized for performance and durability

Construction & Design:

The Cometic head gasket features a multi-layer steel construction that combines strength with flexibility. The stainless steel layers provide a resilient core that resists warping and maintains a tight seal under extreme pressure and temperature fluctuations. The embossed outer layers enhance sealing by conforming to the cylinder head and block surfaces, while the Viton rubber coating adds an additional barrier against leaks and corrosion.

This gasket is engineered to handle the unique thermal and mechanical stresses of the Subaru FA20D and Toyota 4U-GSE engines, ensuring consistent performance and longevity. The precision manufacturing process guarantees exact fitment and reliable sealing, critical for maintaining engine compression and preventing coolant or oil leaks.

Installation & Fitment:

The Cometic head gasket is designed as a direct replacement for the Subaru BRZ (2013–2020) and Toyota 86 (2017–2020) models with the FA20D and 4U-GSE engines. Installation requires standard head gasket replacement procedures and should be performed by a qualified technician or experienced enthusiast. No modifications are necessary, as the gasket matches OEM dimensions and specifications.

Proper surface preparation and torque specifications must be followed to ensure optimal sealing and gasket longevity. This gasket is compatible with stock and lightly modified engines, making it suitable for both routine maintenance and performance rebuilds.

What's Included:

• One Cometic MLS head gasket, 0.050 inch thickness

Ideal For:

This head gasket is ideal for Subaru BRZ and Toyota 86 owners who require a reliable, high-quality replacement part for engine rebuilds or repairs. It is well-suited for enthusiasts seeking enhanced durability and sealing performance in daily drivers, track cars, or lightly modified engines. The gasket’s robust construction also makes it a preferred choice for professional engine builders and tuners working with the FA20D and 4U-GSE powerplants.

Cometic Gasket supplies high-performance sealing solutions for motorsports and high-stress engine builds, with a strong focus on modern gasket materials like multi-layer steel (MLS) head gaskets. Their catalog spans head gaskets and complete gasket sets across a wide range of applications, helping builders maintain reliable combustion and fluid sealing under extreme pressure and heat.