{"product_id":"cometic-mls-exhaust-manifold-gasket-c4151-030-b-series","title":"Cometic MLS Exhaust Manifold Gasket C4151-030 - B-Series","description":"\u003cul\u003e\n\u003cli\u003ePart number C4151-030 \u003c\/li\u003e\n\u003cli\u003eThickness 0.030 in \u003c\/li\u003e\n\u003cli\u003e3-layer stainless, Viton coated \u003c\/li\u003e\n\u003cli\u003eFits B18A1, B18B1, B18C1, B18C5 \u003c\/li\u003e\n\u003cli\u003eCompatible with stock 4-2-1 or 4-1 patterns \u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c!-- split --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli\u003e\u003ca class=\"active\" href=\"#Description\"\u003eDescription\u003c\/a\u003e\u003c\/li\u003e\n \u003cli\u003e\u003ca href=\"#VehicleFitment\"\u003eVehicle Fitment\u003c\/a\u003e\u003c\/li\u003e  \u003cli\u003e\u003ca href=\"#TechnicalData\"\u003eTechnical Data\u003c\/a\u003e\u003c\/li\u003e  \u003cli\u003e\u003ca href=\"#InstallGuide\"\u003eInstall Guide\u003c\/a\u003e\u003c\/li\u003e \u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\n\n\u003cli class=\"active\" id=\"Description\"\u003e\n\u003ch3\u003eCometic MLS Exhaust Manifold Gasket for B-Series - Part #C4151-030\u003c\/h3\u003e\n\u003cp\u003eA ticking exhaust leak at the header flange on a B-series is annoying at idle and a real problem on a turbo car, where it also leaks boost-side pressure and heat onto everything nearby. Cometic's C4151-030 is a 3-layer MLS exhaust gasket for the B-series head that seals a slightly warped header flange and stays sealed through heat cycles that kill the stock gasket.\u003c\/p\u003e\n\u003ch3\u003eWhat It Is and Why It Works\u003c\/h3\u003e\n\u003cp\u003eHeader flanges and heads expand at different rates, and on a car that gets driven hard the factory single-layer gasket eventually stops keeping up. Cometic's exhaust gasket is the same 3-layer MLS construction as their head gaskets: stainless layers with a Viton coating that seals against a flange that isn't perfectly flat and springs back after every heat cycle instead of crushing flat and going soft. It holds torque, so the flange bolts don't work loose, and it won't burn through or push out between ports the way a composite can on a turbo car.\u003c\/p\u003e\n\u003cp\u003eIt fits the factory manifold and every aftermarket B-series header with the stock 4-2-1 or 4-1 flange pattern. If you're installing a new header, use a new gasket; the old one is crushed and won't seal again.\u003c\/p\u003e\n\u003ch3\u003eSpecs\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eC4151-030\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMLS, 3-layer stainless with Viton coating\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eThickness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e.030 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIncluded\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 exhaust manifold gasket\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eVehicle\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eEngine\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1990-2001 Acura Integra, all trims\u003c\/td\u003e\n\u003ctd\u003eB18A1, B18B1, B18C1, B18C5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1999-2000 Honda Civic Si\u003c\/td\u003e\n\u003ctd\u003eB16A2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1994-1997 Honda Civic del Sol VTEC\u003c\/td\u003e\n\u003ctd\u003eB16A3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1997-2001 Honda CR-V\u003c\/td\u003e\n\u003ctd\u003eB20B, B20Z\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB-swaps\u003c\/td\u003e\n\u003ctd\u003eAny B-series head, stock or aftermarket header\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003eAll B-series heads share the exhaust flange pattern.\u003c\/p\u003e\n\u003ch3\u003eWhat to Know Before You Buy\u003c\/h3\u003e\n\u003cp\u003eClean the head face and the header flange to bare metal. MLS tolerates a little warp but not a chunk of old gasket. Check a used header flange for flatness; a badly warped flange should be surfaced, not shimmed with a thicker gasket.\u003c\/p\u003e\n\u003cp\u003eTorque the flange nuts to spec in a cross pattern and recheck after the first heat cycle. Use new copper nuts on a header.\u003c\/p\u003e\n\n\u003c\/li\u003e\n\n \n\u003cli id=\"VehicleFitment\"\u003e\n \u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eVehicle\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eEngine\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1990-2001 Acura Integra, all trims\u003c\/td\u003e\n\u003ctd\u003eB18A1, B18B1, B18C1, B18C5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1999-2000 Honda Civic Si\u003c\/td\u003e\n\u003ctd\u003eB16A2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1994-1997 Honda Civic del Sol VTEC\u003c\/td\u003e\n\u003ctd\u003eB16A3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1997-2001 Honda CR-V\u003c\/td\u003e\n\u003ctd\u003eB20B, B20Z\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB-swaps\u003c\/td\u003e\n\u003ctd\u003eAny B-series head, stock or aftermarket header\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cp\u003eAll B-series heads share the exhaust flange pattern.\u003c\/p\u003e \n\u003c\/li\u003e\n\n\n\n\n\u003cli id=\"TechnicalData\"\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eC4151-030\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMLS, 3-layer stainless with Viton coating\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eThickness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e.030 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIncluded\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 exhaust manifold gasket\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePackaged size \/ weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e17.2 x 6.0 x 0.1 in, 0.23 lb (per PIM)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\u003cli id=\"InstallGuide\"\u003e\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n","brand":"Cometic Gasket","offers":[{"title":"Default Title","offer_id":46630998048802,"sku":"COG-C4151-030","price":20.03,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2218\/5701\/files\/5057ae651b76e9a5225fa442c420dffdL.jpg?v=1787953918","url":"https:\/\/www.hybrid-racing.com\/products\/cometic-mls-exhaust-manifold-gasket-c4151-030-b-series","provider":"Hybrid Racing","version":"1.0","type":"link"}