{"product_id":"fmbp-466444-engine-valve-spring","title":"FMBP 466444 Engine Valve Spring","description":"\u003ch2\u003ePerformance Valve Spring for Ford and Mercury Builds\u003c\/h2\u003e\u003cp\u003eMelling 466444 is a performance engine valve spring built for street, strip, and circle track use. It uses chrome silicon construction and a single-spring design to support valvetrain setups that need controlled seat and open pressure.\u003c\/p\u003e\u003cp\u003eThis spring is listed for a wide range of Ford, Mercury, and Lincoln applications, including Ford Mustang, Ford F-150, and Mercury Cougar fitments. For many listed vehicles, machining may be required, so confirm cylinder head and valvetrain specifications before ordering.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eChrome silicon material for performance valvetrain service\u003c\/li\u003e\n\u003cli\u003eSingle spring design for simplified spring selection\u003c\/li\u003e\n\u003cli\u003eInstalled height: 1.750 in. \/ 44.50 mm\u003c\/li\u003e\n\u003cli\u003eInstalled pressure: 106.0\u003c\/li\u003e\n\u003cli\u003eOpen pressure: 209.0\u003c\/li\u003e\n\u003cli\u003eCoil bind height: 1.062 in. \/ 27.00 mm\u003c\/li\u003e\n\u003cli\u003eSpring open height: 1.250 in. \/ 31.75 mm\u003c\/li\u003e\n\u003cli\u003eInside diameter: 1.062 in. \/ 27.00 mm\u003c\/li\u003e\n\u003cli\u003eOutside diameter: 1.417 in. \/ 36.00 mm\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Description\u003c\/h2\u003e\u003cp\u003ePart number 466444 is part of Melling’s Performance line, which covers a broad range of valve spring needs from street use to race-oriented applications. This spring is intended for engines that require a performance-grade single spring with defined installed and open pressure values. The listed dimensions and pressures help match the spring to the cylinder head and camshaft requirements of the application.\u003c\/p\u003e\u003cp\u003eCompatible With Ford Mustang, Ford F-150, Ford Bronco, Ford Explorer, Mercury Cougar, and many other Ford and Mercury platforms listed in the fitment data. Part number 466444 is also associated with performance-oriented builds where valvetrain control and spring rate selection matter.\u003c\/p\u003e\u003ch2\u003eWhat It Is Used For\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eReplacing worn or weak valve springs that no longer hold proper pressure\u003c\/li\u003e\n\u003cli\u003eSupporting performance camshaft and valvetrain setups\u003c\/li\u003e\n\u003cli\u003eAddressing valve float concerns at higher engine speeds\u003c\/li\u003e\n\u003cli\u003eRestoring consistent valve control in performance engine builds\u003c\/li\u003e\n\u003cli\u003eMatching a spring specification to a performance cylinder head package\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eVerify installed height, coil bind clearance, and spring pressure before installation. The fitment data notes that machining may be required on many applications, so inspect the cylinder head and valvetrain components carefully. Confirm compatibility with the intended Ford, Mercury, or Lincoln engine combination before assembly.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eMelling’s Performance line includes standard, heavy-duty, and race-ready valve spring options, with multiple spring designs and pressure ranges available for different engine requirements. Part number 466444 is built to meet performance valvetrain demands across a broad application range.\u003c\/p\u003e","brand":"FMBP","offers":[{"title":"Default Title","offer_id":53721565855925,"sku":"FMBP-466444","price":16.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/ML_466444_Fro.jpg?v=1794122164","url":"https:\/\/www.partcatalog.com\/products\/fmbp-466444-engine-valve-spring","provider":"PartCatalog","version":"1.0","type":"link"}