CJM Fire-Ring Head Gasket, 2.5L (EJ25), 100mm, .051", 14mm Studs, Kit

CJM Components Fire Ring Head Gasket — The Ultimate Subaru EJ25 Head Gasket Solution

After years of research, engineering, and performance testing, the CJM Components Fire Ring Head Gasket delivers the most advanced solution to eliminate head gasket failure on high horsepower and high boost Subaru EJ25 engines.

This innovative design draws inspiration from proven diesel technology. A precision-machined counterbore step is created around each cylinder bore, allowing specially sized fire rings to drop perfectly into the machined step and gasket bores. Once the cylinder heads are installed and torqued, the CJM Components fire rings create an exceptional compression seal that prevents leaks under extreme cylinder pressure.

Each CJM Components fire ring is engineered to exacting tolerances from a proprietary high-strength alloy and then heat-treated and copper plated for a high performance seal. The gaskets are made from an asbestos-free composite material and feature silicone-based beading around critical oil and coolant passages to ensure superior sealing and longevity.

The combination of precision-engineered alloy fire rings and reinforced composite gaskets provides maximum sealing reliability and long-term performance for your Subaru EJ25 turbocharged engine, even under the most demanding boost and power conditions.

Upgrade your Subaru’s reliability and performance — choose CJM Components Fire Ring Head Gaskets, engineered to handle extreme power where ordinary gaskets fail.

Specs:

• Gasket Material: Composite Graphite with Silicone Seal Beads
  
• Ring Material: CJM Superalloy, Copper Plated
• Thickness: .051"
• Bore: 100mm
• Head Stud Size: 14mm (14mm Head Studs Required for use)
• Package Includes: 2x Fire Ring Head Gaskets, 4x Fire Rings
• Fitment: Subaru EJ25 & EJ257 Closed Deck Cases *Required Machining