Cometic Gasket MLX

2005–2012 Subaru EJ253 / EJ255 2.5L SOHC

Part #: C4622-032

Overview

The Cometic Gasket MLX .032" Head Gasket is a high-performance sealing solution designed specifically for Subaru enthusiasts seeking reliable and durable head gaskets for their 2.5L SOHC engines. Built with advanced multi-layer stopper (MLX) technology, this gasket provides superior combustion chamber sealing and enhanced clamp load, ensuring optimal engine performance and longevity. Whether you're building a high-horsepower build, restoring a stock engine, or upgrading for improved reliability, this gasket offers a perfect balance of strength and precision.

Designed for street, spirited driving, and moderate performance applications, the MLX gasket helps support increased power output while maintaining excellent sealing integrity. Its innovative construction minimizes the risk of leaks and head gasket failure, making it an ideal choice for Subaru owners who demand quality and consistency from their engine components.

Key Features

The Cometic MLX gasket incorporates several advanced features that set it apart from traditional head gaskets:

• Multi-layer stopper (MLX) construction utilizes an integrated stopper layer for enhanced combustion chamber sealing and improved clamp load distribution.
• Made from high-quality materials similar to MLS (Multi-Layer Steel) gaskets, ensuring durability and resistance to heat and pressure.
• 0.032" thickness provides a precise fit for stock and mildly modified engines, helping to maintain proper compression ratios.
• No sealants or re-torque are required after installation, simplifying the installation process and reducing downtime.
• Engineered to withstand the rigors of high-performance applications while maintaining OEM-like reliability.
• Compatible with Subaru EJ253 and EJ255 engines from 2005 to 2012, making it suitable for a wide range of Subaru models including Impreza, Forester, and more.
• Precision-cut for a perfect fit, ensuring consistent sealing and reducing the risk of gasket failure.
• Designed to improve engine sealing under high boost or increased compression conditions.
• Manufactured with strict quality control standards to ensure each gasket meets or exceeds OEM specifications.

Construction & Design

The Cometic MLX head gasket features a multi-layer design that combines steel and composite materials to deliver exceptional sealing performance. The integrated stopper layer acts as a combustion chamber seal, preventing leaks and maintaining compression even under demanding conditions. The gasket's construction minimizes bore distortion and ensures even load distribution across the cylinder head and block surfaces.

Manufactured from high-grade steel with a proprietary coating, the gasket offers excellent resistance to corrosion, heat, and pressure. Its precise machining and quality control processes guarantee a consistent, reliable fit for Subaru engines. The gasket's thickness of 0.032" strikes a balance between sealing capability and maintaining proper compression ratios, making it suitable for both stock and mildly modified engines.

Performance & Sound

While this gasket is primarily designed for durability and sealing integrity, its advanced construction helps support consistent engine performance and reduces the likelihood of head gasket leaks. Proper installation ensures optimal compression and combustion efficiency, contributing to smoother operation and reliable power delivery. The gasket's design also helps prevent coolant and oil leaks, maintaining engine cleanliness and performance over time.

Installation & Fitment

The Cometic MLX head gasket is a direct bolt-on replacement for the factory gasket on compatible Subaru EJ253 and EJ255 engines from 2005 to 2012. No sealants or re-torque are required after installation, simplifying the process. It is recommended to follow standard head gasket replacement procedures, including proper cleaning of mating surfaces and torque specifications, to ensure a perfect seal. This gasket is suitable for both stock and mildly modified engines, providing a reliable sealing solution without the need for additional modifications.

• Easy, bolt-on installation with no special tools required beyond standard engine repair equipment.
• Designed to fit OEM cylinder head and block surfaces precisely.
• Suitable for use in street, performance, and moderate racing applications.

What's Included

• Cometic MLX .032" Head Gasket
• Installation instructions (if provided)

Ideal For

• Subaru owners rebuilding or upgrading their 2.5L SOHC engines
• Performance enthusiasts seeking reliable sealing under increased boost or compression
• Restoration projects requiring OEM-quality head gaskets
• Daily drivers and spirited street cars demanding durability and performance

Emissions Note

This head gasket is designed to meet or exceed OEM standards for sealing and durability. It is suitable for use in vehicles that are compliant with emissions regulations, and no special emissions-related certifications are required for installation.