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IAG Performance Fire-Lock Head Gaskets w/ Fire Lock Rings

Subaru WRX VA 15-21/BRZ/Toyota 86 12-21 (FA20)
$659.95
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Description

Our proprietary "Fire-Lock" Head gasket system has been proven in our record-setting race cars to be the strongest Subaru head gasket system ever produced. We’re excited to announce that this technology is now available for the FA20 WRX and BRZ 2.0L engines. To achieve these results, our engineers isolated the combustion chamber sealing from the fluid sealing properties of the head gaskets. Tested beyond 1000 horsepower, these gaskets provide the durability and reliability needed for high-horsepower builds and extreme boost applications.

 

PRECISION MACHINING

This solution is loosely derived from diesel technology where a counterbore step is machined around each cylinder bore allowing specially sized fire rings to drop into the machined area and head gasket bores. The shims are designed to create a compression seal once the heads are installed and torqued into place. If you’re committed to achieving a reliable high-power build, the IAG Fire-Lock Head Gaskets are a game-changing solution to prevent head gasket failure. However, to take full advantage of this innovative system, precision machining by IAG is required. The "Fire-Lock" system relies on a precisely machined recess at the top of each cylinder to hold the Fire-Lock ring. With the ring locked in place, it stands proud above the deck, providing a superior seal. IAG Fire-Lock rings are manufactured to a very strict tolerance from a proprietary alloy and are then put through a heat treatment process. Fire-Lock Gaskets require IAG ARP 14mm Head Studs (not included) for proper installation. As part of IAG's machining service, the heads are drilled and re-threaded to support the oversized studs.

 

A SUPERIOR SEAL

The gaskets are manufactured from an asbestos-free composite raw material and feature silicone-based beading applied to critical areas to improve sealing around all water and oil passages. The separate gasket bodies take care of sealing oil and coolant passages, keeping them out of the combustion chamber. The combination of the alloy compression shims and gaskets assures maximum sealing for the Subaru 2.0L FA20 engine.

 

*The IAG Fire-Lock gaskets require machine work for installation.

Technical Specifications

  • Product Name: IAG Fire-Lock 2.0L FA20 Head Gaskets (1 Pair w/ Fire-Lock Rings)
  • Part Number: IAG-ENG-1755
  • Gasket Material: Composite with Silicone Beading
  • Ring Material: IAG-Spec Alloy
  • Thickness: .051"
  • Bore: 86.5mm
  • Head Stud Size: 14mm (*IAG 14mm Head Studs Required for use)
  • Package Includes: (x2) IAG Fire-Lock 2.0L FA20 Head Gaskets, (x4) Fire Lock Rings
  • Fitment: Subaru FA20 Closed Deck Cases *Required Machining

Installation Instructions

Install Notes:

  1. If a block or cylinder head was previously o-ringed the groove must be filled and resurfaced before using this type of gasket.
  2. These gaskets require IAG ARP 14mm head studs to achieve the required torque necessary for proper installation.
  3. Due to the required torque, any block that was previously honed will need to go to the next size overbore.
  4. Future servicing will require cylinder head resurfacing due to an imprint left from the Fire-Lock rings.

Fitment Table