Cometic Gasket Cylinder Head Gasket
2005–2010 Scion tC / 2008–2012 Scion xB
C4507-070
Overview:
The Cometic Gasket Cylinder Head Gasket is engineered to deliver superior sealing performance for your Scion tC (2005–2010) and Scion xB (2008–2012). Designed with high-output engines in mind, this Multi-Layer Steel (MLS) gasket ensures reliable durability and exceptional resistance to heat and pressure without the need for additional sealants. Whether you are a daily driver or a performance enthusiast, this gasket provides the confidence and longevity required for both street and spirited driving conditions.
Built to accommodate the unique demands of aluminum heads paired with aluminum or cast iron blocks, the gasket effectively manages the shearing forces between dissimilar metals, maintaining a secure seal under extreme conditions. With its advanced construction and premium materials, it is an ideal upgrade for maintaining engine integrity and preventing leaks.
Key Features:
This Cometic MLS Cylinder Head Gasket incorporates advanced materials and design features to maximize engine sealing and durability:
- Constructed from multiple embossed layers of stainless steel for enhanced strength and flexibility.
- Outer layers coated on both sides with Viton rubber, a heat-resistant fluor elastomer rated up to 250°C (482°F), providing excellent sealing under harsh conditions.
- Compressed operating thickness of 0.036 inches, optimized for precise fit and performance.
- Center shim layer made of uncoated stainless steel, allowing for varied thickness to meet specific engine requirements.
- Designed to withstand the shearing forces between aluminum heads and aluminum or cast iron blocks, preventing gasket failure.
- Corrosion-resistant materials ensure long-lasting durability and reliability.
- No sealants required, simplifying installation and reducing the risk of improper application.
- Compatible with Toyota 2AZ-FE and 2AZ-FXE engines, featuring an 89mm bore size.
Construction & Design:
The gasket’s multi-layer steel construction combines strength and flexibility, allowing it to maintain a tight seal even under the extreme thermal and mechanical stresses of modern engines. The embossed stainless steel layers provide a resilient surface that can rebound to maintain sealing integrity over time. The Viton coating on the outer layers enhances chemical and heat resistance, ensuring the gasket performs reliably in demanding environments.
The uncoated stainless steel shim layer in the center can be customized to different thicknesses, allowing precise adaptation to engine specifications and improving sealing consistency. This design is especially effective for engines with aluminum heads mated to either aluminum or cast iron blocks, where differential expansion can cause sealing challenges.
Installation & Fitment:
This cylinder head gasket is a direct replacement part designed specifically for the following vehicles:
- Scion tC Base 2005–2010
- Scion tC Spec 2007–2008
- Scion xB Base 2008–2012
Installation is straightforward, requiring no additional sealants or modifications. The gasket fits precisely to OEM specifications, ensuring a proper seal with factory mounting points. No cutting, drilling, or special tuning is required, making it suitable for both professional mechanics and experienced DIY enthusiasts.
What's Included:
- One Cometic MLS Cylinder Head Gasket coated with Viton on both sides
- Installation instructions (where applicable)
Ideal For:
This gasket is ideal for Scion owners seeking a reliable, high-quality replacement part that maintains engine performance and prevents leaks. It is well-suited for:
- Daily drivers requiring durable and dependable engine sealing
- Performance enthusiasts upgrading or rebuilding engines
- Vehicles operating under higher stress or modified conditions
- Anyone looking to maintain OEM-level reliability with enhanced material technology
