{"product_id":"64020-est-engine-gasket-sets-for-evolution-tc-88","title":"Est Top End Gaskets \u0026 Seals Big Twin Evo 1984 \/ 1991 Stock Bore Replaces 17033-83A Cometic C9747","description":"\u003ch1\u003eEST ENGINE GASKET SETS FOR EVOLUTION \u0026amp; TC 88\u003c\/h1\u003eWEIGHT: 0.75\u003cbr\u003eEXTREME SEALING TECHNOLOGY (EST) GASKET SETS BY COMETIC ARE BY FAR THE MOST ADVANCED COLLECTION OF GASKETS AND SEALS AVAILABLE. THE BASE GASKETS AND LOWER ROCKER COVER GASKETS FEATURE A NITRILE BUNADINE RUBBER (NBR) COATING ON BOTH SIDES OF A STAINLESS SPRING STEEL GASKET. THIS TYPE OF NBR COATED STEEL GASKET WILL HOLD ITS SHAPE AND WON'T EXTRUDE OUT AND FAIL LIKE THE PAPER TYPE GASKETS ARE KNOWN TO DO UNDER NORMAL COLD TO HOT START UPS WITH RAPID EXPANSION. THE THREE PIECE HEAD GASKET DESIGN FEATURES AN ALUMINIZED STAINLESS STEEL CENTER SANDWICHED BETWEEN TWO NBR COATED STAINLESS SPRING STEEL OUTER LAYERS. TO ENSURE THE UTMOST SEALING POWER , THE OUTER LAYERS ARE EMBOSSED AT THE CYLINDER BORE AND THE OIL DRAIN BACKS PROVIDING A SEAL SO GOOD THAT CYLINDER DOWEL O RINGS ARE NOT REQUIRED. THE UPPER ROCKER COVER GASKETS ARE MADE FROM A VERY PLIABLE RUBBER THAT WILL NOT HARDEN LIKE OE GASKETS DO. ALL OTHER GASKETS ARE MADE FROM A KEVLAR BASED FIBER MATERIAL.\u003cbr\u003e3 1\/2\" (OE CYLINDERS) BORE , .040\" THICK 3 PIECE STAINLESS HEAD GASKET\u003cbr\u003eSINGLE LAYER STEEL BASE GASKET\u003cbr\u003eONE PIECE SINGLE LAYER STEEL ROCKER COVER GASKET\u003cbr\u003eGEAR COVER GASKET NOT INCLUDED\u003cbr\u003eFITS BIG TWIN EVOLUTION 1984\/1991\u003cbr\u003eBY: COMETIC GASKET","brand":"MID-USA","offers":[{"title":"Default Title","offer_id":20200107147375,"sku":"64020","price":168.54,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0081\/7401\/0479\/products\/0076479_0.jpg?v=1575370666","url":"https:\/\/www.widowmakersboneyard.com\/products\/64020-est-engine-gasket-sets-for-evolution-tc-88","provider":"Widowmaker's Boneyard","version":"1.0","type":"link"}