{"product_id":"cometic-mazda-miata-1-6l-b6d-80mm-bore-098-inch-mls-5-head-gasket","title":"Cometic MLS Head Gasket 80mm Bore .098in - NA6 Miata (90-93)","description":"\u003cp\u003eThe Cometic C4122-098 is a 5-layer MLS (multi-layer steel) cylinder head gasket for the Mazda 1.6L B6 engine, with an 80 mm gasket bore and a compressed thickness of .098 in. Cometic lists it for the 1990-1993 Mazda Miata (NA, 1.6L). At .098 in it is thicker than the factory 1.6L gasket, which adds combustion-chamber volume in a built engine.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e80 mm round gasket bore, the only bore size Cometic makes for the B6 (the 1.6L B6 has a 78 mm factory cylinder bore)\u003c\/li\u003e\n\u003cli\u003eCompressed thickness .098 in, thicker than the factory 1.6L gasket (about .040 in compressed); a thicker gasket lowers compression and increases piston-to-head clearance. Cometic does not publish a compression ratio, so calculate it for your build\u003c\/li\u003e\n\u003cli\u003e5-layer MLS construction (Cometic uses 5 layers from .056 in up)\u003c\/li\u003e\n\u003cli\u003eOuter stainless steel layers carry a .001 in Viton rubber coating; install dry, without additional sealant\u003c\/li\u003e\n\u003cli\u003eRequires flat, true head and block deck surfaces; Cometic recommends a surface finish of 50 Ra or finer\u003c\/li\u003e\n\u003cli\u003eMade to order by Cometic; use the head bolt (fastener) manufacturer's torque values\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e 1990-1993 Mazda Miata (NA, 1.6L B6ZE). Not for the 1994-1997 1.8L (BP) or any later Miata\/MX-5; Cometic sells separate BP gaskets (C4560\/C4568\/C4569 for 1994-2000, C4983\/C4984 for 2001-2005).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003ePart number:\u003c\/strong\u003e Cometic C4122-098\u003c\/p\u003e\u003cp\u003eThis Part Fits:\u003c\/p\u003e\u003ctable border=\"1\"\u003e\n\u003ctr\u003e\n\u003cth align=\"left\" width=\"100\"\u003eYear\u003c\/th\u003e\n\u003cth align=\"left\" width=\"125\"\u003eMake\u003c\/th\u003e\n\u003cth align=\"left\" width=\"150\"\u003eModel\u003c\/th\u003e\n\u003cth align=\"left\" width=\"80\"\u003eSubmodel\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1990-1993\u003c\/td\u003e\n\u003ctd\u003eMazda\u003c\/td\u003e\n\u003ctd\u003eMiata\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e","brand":"Cometic Gasket","offers":[{"title":"Default Title","offer_id":45966010777825,"sku":"CGSC4122-098","price":147.24,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0620\/6849\/0465\/files\/276d99b7e4afd7efd22bdba44a15b7c6_cf027eff-a71d-4e91-a3bb-88aa447a726a.jpg?v=1733316991","url":"https:\/\/www.garage-56.com\/products\/cometic-mazda-miata-1-6l-b6d-80mm-bore-098-inch-mls-5-head-gasket","provider":"Garage 56 Engineering ","version":"1.0","type":"link"}