{"product_id":"kooks-ford-5-4l-5-8l-4v-gt500-shelby-gaskets-m-l-a","title":"Kooks Ford 5.4L \/ 5.8L 4V GT500 Shelby Gaskets M.L.A.","description":"\u003ch4\u003eMulti Layer Aluminum Header Gasket for Ford 5.4L and 5.8L 4V Shelby GT500 Applications\u003c\/h4\u003e\n\n\u003cp\u003eThe \u003cstrong\u003ePY-8034-AL\u003c\/strong\u003e is a multi layer aluminum exhaust header gasket engineered for Ford 5.4L and 5.8L four valve Shelby GT500 engines. The Shelby GT500 represents the top of the Mustang performance hierarchy for its respective production years, and the four valve per cylinder layout of the 5.4L and 5.8L engines demands a precisely matched exhaust gasket that seals correctly against the four valve head architecture without port mismatch or sealing surface compromise. The multi layer aluminum construction of this gasket provides excellent conformability to the cylinder head surface and maintains its sealing function through the demanding thermal cycles that a high output supercharged engine generates.\u003c\/p\u003e\n\n\u003cp\u003eWhen installing Kooks long tube headers on a Shelby GT500, using the correct application specific gasket like the \u003cstrong\u003ePY-8034-AL\u003c\/strong\u003e is the difference between a seal that holds for years and one that fails at the first track day. The GT500 platform drives its exhaust system hard under supercharged boost pressure and high temperature conditions, and the multi layer construction of this gasket is rated for that service. Whether you are performing a fresh header installation or replacing blown gaskets on an existing header set, this gasket is the correct Ford GT500 4V header gasket solution from Kooks.\u003c\/p\u003e\n\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eMulti layer aluminum gasket for the Ford 5.4L and 5.8L 4V Shelby GT500 cylinder head\u003c\/li\u003e\n  \u003cli\u003ePrecision stamped port opening matches 4V cylinder head geometry\u003c\/li\u003e\n  \u003cli\u003eSuitable for supercharged GT500 applications with elevated heat and pressure demands\u003c\/li\u003e\n  \u003cli\u003eNo gasket sealant required\u003c\/li\u003e\n  \u003cli\u003eMulti layer construction maintains sealing load across thermal cycles\u003c\/li\u003e\n  \u003cli\u003eCompatible with Kooks Ford GT500 header applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eWhat's Included\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003ethis gasket multi layer aluminum exhaust gasket set for Ford 5.4L and 5.8L 4V GT500 (quantity as required for application)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eSpecifications\u003c\/h4\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eSpecification\u003c\/th\u003e\n      \u003cth\u003eDetail\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003ePart Number (MPN)\u003c\/td\u003e\n\u003ctd\u003ePY-8034-AL\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eUPC\u003c\/td\u003e\n\u003ctd\u003eContact us for UPC\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eGasket Type\u003c\/td\u003e\n\u003ctd\u003eMulti Layer Aluminum (MLA)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eFord 5.4L 4V, 5.8L 4V Shelby GT500\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eUse With\u003c\/td\u003e\n\u003ctd\u003eKooks Ford GT500 Header Applications\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch4\u003eFrequently Asked Questions\u003c\/h4\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat vehicles does this gasket fit?\u003c\/strong\u003e\u003cbr\u003e\nThis gasket is designed for Ford Shelby GT500 Mustangs equipped with the 5.4L or 5.8L four valve per cylinder supercharged V8 engine. This covers both the earlier 5.4L GT500 and the later 5.8L Trinity engine GT500.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs this gasket the same as the PY-8023-A-AL?\u003c\/strong\u003e\u003cbr\u003e\nNo. The PY-8023-A-AL is for the 4.6L and 5.4L 3V two valve per cylinder Mustang GT applications. This gasket is for the 5.4L and 5.8L 4V Shelby GT500 which uses a different cylinder head with four valves per cylinder and a different exhaust port layout.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan I reuse this gasket after removing my headers?\u003c\/strong\u003e\u003cbr\u003e\nNo. Replace this gasket with a fresh gasket any time the header is removed from the cylinder head.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDo I need gasket sealer with this gasket?\u003c\/strong\u003e\u003cbr\u003e\nNo. Multi layer aluminum gaskets seal without additional sealer. Applying sealant is not recommended and may prevent proper gasket compression and sealing.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs this gasket suitable for a supercharged GT500 build?\u003c\/strong\u003e\u003cbr\u003e\nYes. The GT500 is factory supercharged, and this gasket is designed to handle the elevated exhaust temperatures and pressures that the supercharged 5.4L and 5.8L engines produce.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat torque specification should I use?\u003c\/strong\u003e\u003cbr\u003e\nUse the header bolt torque specification from your Kooks Ford GT500 header installation instructions for the correct value for this application.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHow many gaskets are in the set?\u003c\/strong\u003e\u003cbr\u003e\nContact us to confirm the exact quantity. A complete V8 installation requires gaskets for all eight exhaust ports on both cylinder heads.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWill this gasket work with aftermarket cylinder heads on the GT500 engine?\u003c\/strong\u003e\u003cbr\u003e\nThis gasket is dimensioned for factory 4V GT500 head geometry. Aftermarket cylinder heads may have different port dimensions. Verify port and bolt hole compatibility before ordering.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat is the difference between the 5.4L and 5.8L GT500 in terms of gasket compatibility?\u003c\/strong\u003e\u003cbr\u003e\nBoth the 5.4L and 5.8L 4V GT500 engines share the same cylinder head exhaust port pattern that this gasket is designed to seal. Confirm this with Kooks for your specific model year if you are uncertain.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs this gasket for both cylinder banks?\u003c\/strong\u003e\u003cbr\u003e\nThe set provides coverage for the complete installation. Contact us to confirm total piece count for your specific header application.\u003c\/p\u003e\n\n\u003ch4\u003eInstallation Instructions\u003c\/h4\u003e\n\u003col\u003e\n  \u003cli\u003eClean the GT500 cylinder head exhaust port sealing surface, removing all old gasket material thoroughly.\u003c\/li\u003e\n  \u003cli\u003eDo not apply gasket sealer to this gasket or the head surface.\u003c\/li\u003e\n  \u003cli\u003ePosition each gasket over the correct exhaust port, confirming the port opening and bolt hole alignment.\u003c\/li\u003e\n  \u003cli\u003eBring the header flange to the cylinder head and thread all bolts by hand before torquing.\u003c\/li\u003e\n  \u003cli\u003eTorque in a crossing pattern to the Kooks header installation specification.\u003c\/li\u003e\n  \u003cli\u003eCheck and re torque after the first heat cycle.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch4\u003eProp 65 Warning\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eWARNING:\u003c\/strong\u003e This product can expose you to chemicals known to the State of California to cause cancer, birth defects or reproductive harm. For more information go to \u003ca href=\"https:\/\/www.p65warnings.ca.gov\" target=\"_blank\" rel=\"nofollow\"\u003ewww.P65Warnings.ca.gov\u003c\/a\u003e.\u003c\/p\u003e","brand":"Kooks Headers","offers":[{"title":"Default Title","offer_id":41007241789519,"sku":"KSHPY-8034-AL","price":31.52,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1062\/7920\/products\/kooks-py8034al-gaskets_01.jpg?v=1764344603","url":"https:\/\/www.blackopsautoworks.com\/products\/kooks-ford-5-4l-5-8l-4v-gt500-shelby-gaskets-m-l-a","provider":"Black Ops Auto Works","version":"1.0","type":"link"}