Description
Product Fitment:
2022-2025 Subaru WRX
Proven in record-setting EJ-powered race cars, IAG’s Fire-Lock™ Head Gasket System now brings its unmatched durability and sealing technology to the Subaru FA24 engine platform. Designed for high-boost and high-horsepower applications, this head gasket kit is the ultimate solution for serious performance builds.
Features:
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Supports 1000+ horsepower and extreme boost levels
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Innovative design separates combustion sealing from fluid sealing
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Requires precision machine work for proper installation
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Developed for use with IAG ARP 14mm Head Studs (sold separately)
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Derived from diesel engine technology for superior combustion sealing
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Features a machined counterbore that seats custom Fire-Lock™ alloy rings
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Rings stand proud above the deck to create a crush seal under torque
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Engineered to prevent head gasket failure under high load and pressure
Specs:
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Gasket material: Asbestos-free composite with silicone beading
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Fire rings: Proprietary heat-treated IAG-Spec alloy
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Gasket thickness: 0.051″
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Bore: 94.5mm
Package Includes:
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(2) IAG Fire-Lock™ FA24 Head Gaskets
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(4) Fire-Lock™ Alloy Rings
Installation Notes:
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Professional machining required: Block must be cut for ring recesses
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Cylinder heads must be drilled and tapped for 14mm head studs
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Not compatible with stock head studs or non-machined engines






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