{"product_id":"cometic-nissan-sr20de-det-s14-87-5mm-bore-051in-mls-head-gasket-w-both-additional-oil-holes","title":"Cometic Nissan SR20DE\/DET S14 87.5mm Bore .051in MLS Head Gasket w\/Both Additional Oil Holes","description":"\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eCometic MLS Head Gasket — Nissan SR20DET RWD, 87.5mm Bore, .051\" (C4576-051)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eAn 87.5mm oversize multi-layer steel gasket for the SR20 — the one you need when the block has been bored past standard.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eMLS provides maximum sealing performance and requires no sealants.\u003c\/strong\u003e Multiple layers of stainless steel give increased strength plus the ability to rebound and resist corrosion — that rebound is what keeps the seal alive through heat cycles instead of crushing once and staying crushed.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eThe outer layers are embossed and coated both sides with Viton, a fluoroelastomer rubber heat resistant to 250°C \/ 482°F, designed for harsh sealing environments, load conditions, and surface finishes. The center shim layer is uncoated stainless, and its thickness sets the compressed height.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eNo re-torque needed\u003c\/strong\u003e — the embossing design promotes an even clamp load across the sealing surface, which measurably reduces bore distortion.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eIdeal for aluminum heads to aluminum blocks and aluminum heads to cast iron blocks, withstanding the shearing force created between two materials with different expansion rates.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eSpecs:\u003c\/strong\u003e 87.5mm bore, .051\" (1.3mm) compressed thickness. RWD configuration.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e Nissan SR20DET RWD — S13, S14, S15 240SX and Silvia. \u003cstrong\u003eOversize bore — this is for a block that's been machined past standard.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eMeasure your actual bore before ordering.\u003c\/strong\u003e An 87.5mm gasket on an 86.5mm bore leaves the fire ring hanging into the cylinder, and that's a failure on the first heat cycle.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eHead studs are effectively required.\u003c\/strong\u003e An MLS gasket on stock head bolts under real boost is how people end up doing this job twice.\u003c\/p\u003e","brand":"Street Strip Supply","offers":[{"title":"Default Title","offer_id":47294508531885,"sku":null,"price":96.52,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0779\/8105\/7197\/files\/cgsC4576-051.jpg?v=1787415610","url":"https:\/\/streetstripsupply.com\/products\/cometic-nissan-sr20de-det-s14-87-5mm-bore-051in-mls-head-gasket-w-both-additional-oil-holes","provider":"Street Strip Supply","version":"1.0","type":"link"}