Cometic MLS Cylinder Head Gasket
2005–2010 Scion tC / 2008–2012 Scion xB
C4507-042
Overview:
The Cometic MLS (Multi-Layer Steel) Cylinder Head Gasket is engineered to provide superior sealing performance for high-output engines, specifically designed for Scion tC models from 2005 to 2010 and Scion xB models from 2008 to 2012. This gasket is ideal for enthusiasts and professionals seeking reliable durability and leak-free operation under demanding conditions.
Constructed with multiple embossed layers of stainless steel and coated with heat-resistant Viton rubber, this gasket ensures a tight seal between the cylinder head and engine block without the need for additional sealants. It is well-suited for both aluminum-to-aluminum and aluminum-to-cast iron applications, making it a versatile choice for maintaining engine integrity and performance.
Key Features:
This Cometic MLS Cylinder Head Gasket offers advanced technology and materials designed to meet the rigorous demands of modern engines:
- Multi-layer stainless steel construction for enhanced strength and durability
- Embossed outer layers coated with Viton rubber, providing excellent heat resistance up to 250°C (482°F)
- Designed to withstand the shearing forces between aluminum heads and cast iron or aluminum blocks
- Corrosion-resistant materials that rebound to maintain a consistent seal over time
- Compressed operating thickness of 0.036 inches for precise fitment and sealing
- No sealants required, simplifying installation and reducing the risk of leaks
- Center shim layer of uncoated stainless steel, customizable for various thickness requirements
- Compatible with Toyota 2AZ-FE and 2AZ-FXE engines, ensuring OEM-level performance
Construction & Design:
The gasket’s multi-layer steel design incorporates several embossed stainless steel layers that work together to provide a resilient and reliable seal. The outer layers are coated on both sides with Viton, a fluor elastomer rubber known for its exceptional resistance to heat, chemicals, and wear. This coating allows the gasket to maintain sealing integrity in harsh environments and under varying load conditions.
The center layer, or shim, is made from uncoated stainless steel, which can be adjusted in thickness to meet specific engine requirements. This layered construction not only enhances strength but also provides the flexibility needed to accommodate the differential expansion rates between aluminum heads and cast iron or aluminum blocks.
Installation & Fitment:
The Cometic MLS Cylinder Head Gasket is designed for direct replacement on compatible Scion tC and xB models, fitting perfectly without modification. It uses OEM mounting points and requires no additional sealants, making installation straightforward for professional mechanics and experienced enthusiasts alike.
No cutting, drilling, or special tuning is required, ensuring a hassle-free upgrade that restores or improves your engine’s sealing performance.
- Fits Scion tC models from 2005 to 2010
- Fits Scion xB models from 2008 to 2012
- Compatible with Toyota 2AZ-FE and 2AZ-FXE engines
What's Included:
- One Cometic MLS Cylinder Head Gasket, embossed and Viton-coated
- Installation instructions (where applicable)
Ideal For:
This gasket is perfect for daily drivers, performance enthusiasts, and professional rebuilders who demand a durable, leak-resistant head gasket solution. It is especially suited for vehicles experiencing high cylinder pressures or those upgraded with performance modifications that increase engine output.
- Owners seeking OEM-level reliability and sealing
- Performance builds requiring enhanced gasket strength
- Engines with aluminum heads paired to aluminum or cast iron blocks
- Those wanting a maintenance-free gasket with no sealant needed
