Cometic Cylinder Head Gasket

2005–2010 Scion tC / 2008–2012 Scion xB (2AZ-FE / 2AZ-FXE, 89mm Bore)

C4507-066

Overview:

The Cometic Cylinder Head Gasket is engineered to deliver superior sealing performance for your Scion tC (2005–2010) and Scion xB (2008–2012) equipped with the 2AZ-FE or 2AZ-FXE engines. Constructed with advanced Multi-Layer Steel (MLS) technology, this gasket is designed to withstand the demands of high-output engines without the need for additional sealants. Whether you are a daily driver or a performance enthusiast, this gasket ensures reliable sealing between the cylinder head and engine block, enhancing engine durability and performance.

Ideal for both aluminum-to-aluminum and aluminum-to-cast iron applications, the Cometic MLS gasket offers excellent resistance to shearing forces and corrosion, providing long-lasting service in demanding conditions.

Key Features:

Designed with precision and durability in mind, the Cometic Cylinder Head Gasket offers the following key features:

• Multi-Layer Steel (MLS) construction with multiple embossed stainless steel layers for enhanced strength and sealing capability.
• Outer layers coated on both sides with Viton rubber, a heat-resistant fluor elastomer that withstands temperatures up to 250°C (482°F).
• Embossed outer layers improve gasket sealing by adapting to surface irregularities and maintaining consistent compression.
• Uncoated stainless steel center shim layer allows for precise thickness customization to meet specific engine requirements.
• Compressed operating thickness of 0.036" (.066" nominal thickness) optimized for the 89mm bore of the 2AZ-FE and 2AZ-FXE engines.
• Compatible with both aluminum heads to aluminum blocks and aluminum heads to cast iron blocks, resisting shearing forces caused by differing metal expansion rates.
• Corrosion-resistant materials ensure long-term durability and reliability under harsh operating conditions.
• Requires no additional sealants, simplifying installation and reducing the risk of leaks.

Construction & Design:

The gasket’s construction features multiple embossed layers of stainless steel, providing the strength and flexibility needed to maintain a reliable seal under high pressure and temperature fluctuations. The outer layers are coated with Viton rubber, a premium fluor elastomer known for its exceptional heat resistance and chemical stability. This coating enhances the gasket’s ability to conform to the cylinder head and block surfaces, ensuring a tight seal and preventing leaks.

The center shim layer is made of uncoated stainless steel, allowing for precise thickness adjustments to accommodate specific engine tolerances. This multi-layer design enables the gasket to rebound and maintain sealing integrity even after repeated thermal cycles, making it ideal for high-performance and high-output engines.

Installation & Fitment:

This Cometic MLS Cylinder Head Gasket is a direct replacement part designed specifically for the following vehicles and engine configurations:

• Scion tC Base (2005–2010)
• Scion tC Spec (2007–2008)
• Scion xB Base (2008–2012)
• Compatible with Toyota 2AZ-FE and 2AZ-FXE engines featuring an 89mm bore.

Installation is straightforward and requires no additional sealants. The gasket fits precisely using factory mounting points and does not require any modifications such as cutting, drilling, or special tuning. This ensures a hassle-free upgrade or replacement process.

What's Included:

• One Cometic MLS Cylinder Head Gasket, .066" thickness, coated on both sides with Viton rubber

Ideal For:

• Owners seeking a reliable, high-quality replacement head gasket for their Scion tC or xB with 2AZ-FE/2AZ-FXE engines.
• Performance enthusiasts requiring a gasket capable of handling increased power and thermal stress.
• Daily drivers who want long-lasting engine sealing and durability without the need for frequent maintenance.
• Mechanics and rebuilders looking for a precision-engineered MLS gasket that simplifies installation and ensures consistent results.

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.