{"product_id":"cometic-toyota-4ag-ge-83mm-056-inch-mls-head-gasket","title":"Cometic MLS Head Gasket | Toyota 4A-GE | 83mm Bore | 0.056\" | C4166-056","description":"\u003ch2\u003eCometic MLS Head Gasket – Toyota 4A-GE | 83mm Bore | 0.056\"\u003c\/h2\u003e\n\u003cp\u003eAchieve maximum head sealing performance on your Toyota 4A-GE build with the Cometic MLS (Multi-Layer Steel) Head Gasket. Engineered for today's high-output engines, Cometic MLS head gaskets provide superior sealing performance over OEM-style composite gaskets — requiring no sealants and delivering long-term reliability on both aluminum-to-aluminum and aluminum-to-cast-iron head and block combinations. This 83mm bore, 0.056\" nominal thickness gasket is suited for standard bore 4A-GE builds and mild overbore applications.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMulti-Layer Steel (MLS) Construction:\u003c\/strong\u003e Comprised of multiple embossed layers of stainless steel for increased strength, superior sealing performance, and the ability to rebound and resist corrosion — outperforms OEM-style composite head gaskets in high-output applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eViton-Coated Outer Layers:\u003c\/strong\u003e Outer stainless steel layers are embossed and coated on both sides with Viton — a fluoroelastomer rubber material heat resistant to 250°C \/ 482°F — designed to meet the demands of harsh sealing environments, varied load conditions, and a range of surface finishes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUncoated Stainless Shim Center Layer:\u003c\/strong\u003e Center shim layer is uncoated stainless steel, which can be varied to accommodate multiple thickness requirements for compression ratio tuning\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo Sealant Required:\u003c\/strong\u003e Cometic MLS gaskets provide maximum sealing performance without the need for additional sealants — clean, straightforward installation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAluminum \u0026amp; Cast Iron Compatible:\u003c\/strong\u003e Suitable for aluminum heads to aluminum blocks and aluminum heads to cast iron blocks — withstands the shearing force created by dissimilar material thermal expansion\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCometic Quality:\u003c\/strong\u003e Manufactured by Cometic Gasket — a globally recognized leader in performance and OEM-replacement gasket solutions trusted by professional engine builders worldwide\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eType: MLS Head Gasket\u003c\/li\u003e\n\u003cli\u003eEngine: Toyota 4A-GE 1.6L DOHC\u003c\/li\u003e\n\u003cli\u003eBore: 83mm\u003c\/li\u003e\n\u003cli\u003eNominal Thickness: 0.056\"\u003c\/li\u003e\n\u003cli\u003eCompressed Operating Thickness: 0.036\"\u003c\/li\u003e\n\u003cli\u003eMaterial: Multi-Layer Stainless Steel \/ Viton-Coated Outer Layers\u003c\/li\u003e\n\u003cli\u003eSealant Required: No\u003c\/li\u003e\n\u003cli\u003eFitment: Toyota 4A-GE — AE86 Corolla\/Sprinter, AW11 MR2, and related platforms\u003c\/li\u003e\n\u003cli\u003ePart Number: C4166-056\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Verify bore size, deck height, and target compression ratio before ordering. Surface finish of the head and block deck must meet Cometic's recommended specifications for MLS gaskets — a minimum 60 Ra surface finish is typically required. Professional engine building by an experienced machinist is recommended. Pair with the Cometic Street Pro Bottom End Kit (PRO2041B) for a complete 4A-GE gasket solution.\u003c\/p\u003e","brand":"Cometic Gasket","offers":[{"title":"Default Title","offer_id":51232233619623,"sku":"CGSC4166-056","price":127.17,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0555\/8344\/1063\/files\/8868fa3324b2e2d97b79f35001331acaL_c8bba513-63dd-4e0f-be92-cf5d72355ecb.jpg?v=1787080700","url":"https:\/\/www.straightsiximports.com\/en-us\/products\/cometic-toyota-4ag-ge-83mm-056-inch-mls-head-gasket","provider":"Straight Six Imports","version":"1.0","type":"link"}