{"product_id":"fire-lock-head-gaskets-100mm-bore-0-051-thickness","title":"Fire-Lock Head Gaskets 100mm Bore 0.051\" Thickness","description":"The IAG Performance Fire-Lock Head Gaskets represent an advanced solution for preventing head gasket failure in high-horsepower, high-boost Subaru EJ25 and EJ257 engines. Drawing inspiration from diesel technology, these gaskets employ a unique system where a counterbore is machined into the cylinder bore. Specially sized IAG-Spec Alloy Fire-Lock rings are then seated in this machined area and the head gasket bores, creating a compression seal when the heads are torqued. These rings are manufactured to strict tolerances from a proprietary alloy and undergo a heat treatment process to ensure durability.\n\nThe gaskets themselves are constructed from an asbestos-free composite material, enhanced with silicone-based beading around critical water and oil passages for improved sealing. This design effectively separates combustion chamber sealing from fluid sealing, allowing the gasket bodies to manage oil and coolant passages independently. The combination of the alloy compression shims and gaskets ensures robust sealing for turbocharged EJ25 engines, tested to withstand in excess of 1000 horsepower.\n\nKey specifications include a 100mm bore, a .051\" thickness, and a design specifically for 14mm head studs. Please note that installation of these Fire-Lock gaskets requires precision machining of the cylinder liners to accept the fire-lock rings. The package includes two Fire-Lock Head Gaskets and four Fire-Lock Rings.","brand":"IAG Performance","offers":[{"title":"Default Title","offer_id":52688779870520,"sku":"IAG-ENG-1741","price":329.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/664207804.webp?v=1784895738","url":"https:\/\/store.motormia.co\/products\/fire-lock-head-gaskets-100mm-bore-0-051-thickness","provider":"MOTORMIA","version":"1.0","type":"link"}