{"product_id":"iag-fire-lock-051-head-gaskets-with-iag-spec-alloy-ring-set","title":"IAG Fire-Lock .051\" Head Gaskets with IAG-Spec Alloy Ring Set","description":"\u003ch2\u003eIAG Fire-Lock 2.5L Subaru Head Gaskets (1 Pair) w\/ Fire-Lock Rings\u003c\/h2\u003e\n\u003ch3\u003eFor EJ25\/EJ257 100mm .051\" for 14mm Head Studs\u003c\/h3\u003e\n\n\u003cp\u003eThe IAG Fire-Lock™ Head Gaskets represent the ultimate solution for preventing head gasket failure in high-horsepower and high-boost Subaru applications. Engineered specifically for IAG's closed deck blocks with Fire-Lock receiver groove machining, these gaskets deliver unmatched sealing performance where conventional gaskets fail.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFire-Lock Technology:\u003c\/strong\u003e Proprietary receiver groove design works with machined block to prevent head gasket failure\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e.051\" Thickness:\u003c\/strong\u003e Precision thickness optimized for IAG closed deck applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e100mm Bore Compatible:\u003c\/strong\u003e Designed for 99.75mm bored blocks (100mm nominal)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e14mm Head Stud Design:\u003c\/strong\u003e Requires 14mm head studs (sold separately)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIAG-Spec Fire-Lock Rings:\u003c\/strong\u003e Includes precision alloy rings for complete Fire-Lock sealing system\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMulti-Layer Steel Construction:\u003c\/strong\u003e Superior strength and heat resistance for extreme applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Boost Rated:\u003c\/strong\u003e Engineered for 950+ BHP applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e IAG-ENG-1741\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGasket Thickness:\u003c\/strong\u003e .051\" (1.3mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBore Size:\u003c\/strong\u003e 100mm (for 99.75mm bored blocks)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHead Stud Size:\u003c\/strong\u003e 14mm (studs sold separately)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Multi-layer steel with Fire-Lock receiver groove compatibility\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1 pair (2 gaskets) with Fire-Lock ring set\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCompression Ratios\u003c\/h3\u003e\n\u003cp\u003eWhen used with IAG 950 Closed Deck Short Block (IAG-ENG-S950):\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e8.8:1\u003c\/strong\u003e on B, V, and W EJ257 cylinder heads\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e9.1:1\u003c\/strong\u003e on D EJ255 cylinder heads\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSubaru WRX (2002-2014) - EJ25 engines\u003c\/li\u003e\n\u003cli\u003eSubaru STI (2004-2021) - EJ257 engines\u003c\/li\u003e\n\u003cli\u003eSubaru Legacy GT (2005-2012) - EJ255 engines\u003c\/li\u003e\n\u003cli\u003eSubaru Forester XT (2004-2013) - EJ255 engines\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2x IAG Fire-Lock .051\" head gaskets\u003c\/li\u003e\n\u003cli\u003eIAG-Spec Fire-Lock alloy ring set\u003c\/li\u003e\n\u003cli\u003eInstallation instructions\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy Fire-Lock Technology?\u003c\/h3\u003e\n\u003cp\u003eHead gasket failure is the most common weakness in high-boost Subaru builds. IAG's Fire-Lock technology solves this by using a precision-machined receiver groove in the block deck surface that works with the Fire-Lock rings to create an enhanced combustion seal. This prevents combustion gases from escaping between the cylinder and gasket, eliminating the primary failure mode in modified engines.\u003c\/p\u003e\n\n\u003ch3\u003eInstallation Requirements\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCRITICAL:\u003c\/strong\u003e Engine block MUST be machined with IAG Fire-Lock receiver groove (standard on IAG closed deck blocks)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHead Studs:\u003c\/strong\u003e 14mm ARP head studs required (sold separately)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBlock Preparation:\u003c\/strong\u003e Block deck must be machined for Fire-Lock groove - these will NOT work on standard blocks\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProfessional Installation:\u003c\/strong\u003e Strongly recommended\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTorque Specifications:\u003c\/strong\u003e Follow IAG installation guidelines precisely\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSurface Preparation:\u003c\/strong\u003e Block and head surfaces must be perfectly clean and flat\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCompatible Products\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIAG 950 EJ25 Closed Deck Short Block (IAG-ENG-S950)\u003c\/li\u003e\n\u003cli\u003eIAG Performance closed deck blocks with Fire-Lock receiver groove machining\u003c\/li\u003e\n\u003cli\u003e14mm ARP head studs (required, sold separately)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eIMPORTANT:\u003c\/strong\u003e These gaskets are designed EXCLUSIVELY for use with IAG Fire-Lock receiver groove machining. They will NOT function properly on standard Subaru blocks without the Fire-Lock groove machined into the block deck surface. The block must be specifically prepared for Fire-Lock technology. Professional installation and proper torque procedures are essential for optimal performance.\u003c\/em\u003e\u003c\/p\u003e","brand":"IAG Performance","offers":[{"title":"Default Title","offer_id":50766264959280,"sku":"IAG-ENG-1741","price":659.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0934\/3156\/2544\/files\/IAG-ENG-1741-01__99511.jpg?v=1771375465","url":"https:\/\/coore.com.au\/products\/iag-fire-lock-051-head-gaskets-with-iag-spec-alloy-ring-set","provider":"Coore ","version":"1.0","type":"link"}