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IAG Fire-Lock 2.5L Head Gaskets (1 Pair with Fire-Lock Rings) For 14mm Head Studs Only- Note Machine Work with IAG is REQUIRED. After years of research and development testing, the IAG Performance Fire-Lock head gasket is the newest solution to preventing head gasket failure on high horsepower and high boost Subaru EJ25 engines. 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. IAG fire rings are manufactured to a very strict tolerance from a proprietary alloy and are then put through a heat treatment process. The gaskets are manufactured from an asbestos-free composite raw material and feature a silicone based beading applied to critical areas to improve sealing around all water and oil passages. The combination of the alloy compression shims and gaskets assure maximum sealing for a Subaru EJ25 turbocharged engine. Features: Composite Material, IAG-Spec Alloy Ring, Specifically designed for 14mm Head Studs, Silicone Beading, 100mm Bore, .051" Thickness, Intended for High Horsepower, High Boost applications.
IAG Performance Fire-Lock Head Gaskets (1 Pair w/ Fire-Lock Rings) for EJ25/EJ257, 100mm, .051" IAG-ENG-1740
Specifications:
| Prop 65 - Short Label | WARNING: Cancer and Reproductive Harm - www.p65warnings.ca.gov |
| Prop 65 (C, R or CR) | CR |
| Prop 65 Yes/No | Yes |
| Title | IAG Fire-Lock Head Gaskets (1 Pair w/ Fire-Lock Rings) for Subaru EJ25 / EJ257, 100mm, .051in, for 14mm Head Studs. |
| 17 | Gray |
| 1721 | Two Piece |
| 10 | Composite with Silicone Beading |
| 3753 | Alloy |
| 4098 | 100 |
| 9022 | No |
| 3390 | Performance |
| 19 | 0.051 |
| Description_DES | Fire-Lock Head Gaskets (1 Pair w/ Fire-Lock Rings) for EJ25/EJ257, 100mm, .051" |
| Description_APS | Subaru: Baja 2004 - 2006, Subaru: Forester 2004 - 2013, Subaru: Impreza 2004 - 2014, Subaru: Legacy 2005 - 2013, Subaru: Outback 2005 - 2009, Subaru: WRX 2012 - 2016, Subaru: WRX STI 2013 - 2021 |
| Description_EXT | IAG Fire-Lock Head Gaskets (1 Pair w/ Fire-Lock Rings) for Subaru EJ25 / EJ257, 100mm, .051", for 14mm Head Studs. |
| Description_MKT | IAG Fire-Lock 2.5L Head Gaskets (1 Pair with Fire-Lock Rings) For 14mm Head Studs Only- Note Machine Work with IAG is REQUIRED. After years of research and development testing, the IAG Performance Fire-Lock head gasket is the newest solution to preventing head gasket failure on high horsepower and high boost Subaru EJ25 engines. 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. IAG fire rings are manufactured to a very strict tolerance from a proprietary alloy and are then put through a heat treatment process. The gaskets are manufactured from an asbestos-free composite raw material and feature a silicone based beading applied to critical areas to improve sealing around all water and oil passages. The combination of the alloy compression shims and gaskets assure maximum sealing for a Subaru EJ25 turbocharged engine. Features: Composite Material, IAG-Spec Alloy Ring, Specifically designed for 14mm Head Studs, Silicone Beading, 100mm Bore, .051" Thickness, Intended for High Horsepower, High Boost applications. |
| Description_FAB | Unique Fire-Lock Rings help contain extreme cylinder pressures. Cylinder liners must be machined to accept the fire-lock rings. |
| Description_TLE | IAG Performance Fire-Lock Head Gaskets (1 Pair w/ Fire-Lock Rings) for Subaru EJ25 / EJ257, 100mm, .051", for 14mm Head Studs. |
| Description_SHO | Cylinder Head Gasket |
| Description_INV | IAG Performance Cylinder Head Gasket |
| Description_ASC | Kit Includes: (2x) Fire-lock gaskets, (4x) Fire-lock rings |
| Description_ASC | The IAG Fire-Lock gaskets require machine work for installation and are recommended for use with 14mm head stud hardware. |
| Description_ASC | IAG ARP 14mm Head Studs Required |
| Description_ASC | The gaskets are sold in pairs with four Fire-lock rings. |
| Description_ASC | If a block or cylinder head was previously o-ringed the groove must be filled and resurfaced before using this type of gasket |
| Description_ASC | These gaskets require IAG ARP 14mm head studs to achieve the required torque necessary for proper installation. Due to the required torque, any block that was previously honed will need to go to the next size overbore. Future servicing will require cylinder head resurfacing due to an imprint left from the Fire-lock rings. |
| Description_KSW | IAG Performance |
| Description_LAB | Fire-Lock Head Gaskets (1 Pair w/ Fire-Lock Rings) for EJ25/EJ257, 100mm, .051" |
| Description_DEF | Engine Cylinder Head Gasket |
This Part Fits:
| Year | Make | Model | Submodel | Notes |
|---|---|---|---|---|
| 2004 | Subaru | Baja | Turbo | |
| 2005 | Subaru | Baja | Turbo | |
| 2006 | Subaru | Baja | Turbo | |
| 2008 | Subaru | Forester | 2.5 XT | |
| 2008 | Subaru | Forester | Sports 2.5 XT | |
| 2004 | Subaru | Forester | XT | |
| 2010 | Subaru | Forester | XT Sports | |
| 2011 | Subaru | Forester | XT Sports | |
| 2012 | Subaru | Forester | XT Sports | |
| 2011 | Subaru | Forester | XT Touring | |
| 2012 | Subaru | Forester | XT Touring | |
| 2013 | Subaru | Forester | XT Touring | |
| 2009 | Subaru | Impreza | 2.5 GT | |
| 2010 | Subaru | Impreza | 2.5 GT | |
| 2006 | Subaru | Impreza | WRX | |
| 2007 | Subaru | Impreza | WRX | |
| 2008 | Subaru | Impreza | WRX | |
| 2009 | Subaru | Impreza | WRX | |
| 2010 | Subaru | Impreza | WRX | |
| 2011 | Subaru | Impreza | WRX | |
| 2012 | Subaru | Impreza | WRX | |
| 2013 | Subaru | Impreza | WRX | |
| 2014 | Subaru | Impreza | WRX | |
| 2010 | Subaru | Impreza | WRX GT | |
| 2009 | Subaru | Impreza | WRX Premium | |
| 2010 | Subaru | Impreza | WRX Premium | |
| 2011 | Subaru | Impreza | WRX Premium | |
| 2012 | Subaru | Impreza | WRX Premium | |
| 2013 | Subaru | Impreza | WRX Premium | |
| 2014 | Subaru | Impreza | WRX Premium | |
| 2010 | Subaru | Impreza | WRX SE | |
| 2004 | Subaru | Impreza | WRX STI | |
| 2005 | Subaru | Impreza | WRX STI | |
| 2006 | Subaru | Impreza | WRX STI | |
| 2007 | Subaru | Impreza | WRX STI | |
| 2008 | Subaru | Impreza | WRX STI | |
| 2009 | Subaru | Impreza | WRX STI | |
| 2010 | Subaru | Impreza | WRX STI | |
| 2011 | Subaru | Impreza | WRX STI | |
| 2012 | Subaru | Impreza | WRX STI | |
| 2013 | Subaru | Impreza | WRX STI | |
| 2014 | Subaru | Impreza | WRX STI | |
| 2010 | Subaru | Impreza | WRX STI Special Edition | |
| 2006 | Subaru | Impreza | WRX TR | |
| 2007 | Subaru | Impreza | WRX TR | |
| 2010 | Subaru | Legacy | 2.5GT | |
| 2011 | Subaru | Legacy | 2.5GT | |
| 2012 | Subaru | Legacy | 2.5GT | |
| 2009 | Subaru | Legacy | GT Limited | |
| 2006 | Subaru | Legacy | GT spec.B | |
| 2007 | Subaru | Legacy | GT spec.B | |
| 2008 | Subaru | Legacy | GT spec.B | |
| 2009 | Subaru | Legacy | GT spec.B | |
| 2008 | Subaru | Outback | 2.5 XT | |
| 2005 | Subaru | Outback | XT | |
| 2006 | Subaru | Outback | XT | |
| 2007 | Subaru | Outback | XT | |
| 2008 | Subaru | Outback | XT | |
| 2005 | Subaru | Outback | XT Limited | |
| 2006 | Subaru | Outback | XT Limited | |
| 2007 | Subaru | Outback | XT Limited | |
| 2008 | Subaru | Outback | XT Limited | |
| 2009 | Subaru | Outback | XT Limited | |
| 2013 | Subaru | WRX | Base | |
| 2014 | Subaru | WRX | Base | |
| 2013 | Subaru | WRX | Limited | |
| 2014 | Subaru | WRX | Limited | |
| 2012 | Subaru | WRX | STI | |
| 2013 | Subaru | WRX | STI | |
| 2014 | Subaru | WRX | STI | |
| 2015 | Subaru | WRX | STI | |
| 2016 | Subaru | WRX | STI | |
| 2013 | Subaru | WRX STI | Base | |
| 2014 | Subaru | WRX STI | Base | |
| 2015 | Subaru | WRX STI | Base | |
| 2016 | Subaru | WRX STI | Base | |
| 2017 | Subaru | WRX STI | Base | |
| 2018 | Subaru | WRX STI | Base | |
| 2019 | Subaru | WRX STI | Base | |
| 2020 | Subaru | WRX STI | Base | |
| 2021 | Subaru | WRX STI | Base | |
| 2020 | Subaru | WRX STI | Kanrai Edition | |
| 2015 | Subaru | WRX STI | Launch Edition | |
| 2015 | Subaru | WRX STI | Limited | |
| 2016 | Subaru | WRX STI | Limited | |
| 2017 | Subaru | WRX STI | Limited | |
| 2018 | Subaru | WRX STI | Limited | |
| 2019 | Subaru | WRX STI | Limited | |
| 2020 | Subaru | WRX STI | Limited | |
| 2021 | Subaru | WRX STI | Limited | |
| 2019 | Subaru | WRX STI | S209 | |
| 2016 | Subaru | WRX STI | Series.HyperBlue | |
| 2017 | Subaru | WRX STI | Sport | |
| 2018 | Subaru | WRX STI | Sport | |
| 2019 | Subaru | WRX STI | Sport | |
| 2020 | Subaru | WRX STI | Sport | |
| 2020 | Subaru | WRX STI | Sport-tech | |
| 2018 | Subaru | WRX STI | STI | |
| 2019 | Subaru | WRX STI | STI | |
| 2020 | Subaru | WRX STI | STI | |
| 2014 | Subaru | WRX STI | Tsurugi Edition | |
| 2018 | Subaru | WRX STI | Type RA |





