{"product_id":"delphi-fp10439-fuel-injection-pressure-regulator","title":"Delphi FP10439 Fuel Injection Pressure Regulator","description":"\u003ch2\u003eFuel Pressure Control for OE Applications\u003c\/h2\u003e\u003cp\u003eThe Delphi FP10439 fuel injection pressure regulator is built for precise fuel system control in select Ford, Mazda, and Mercury applications. With a metal body, push-in inlet, hose outlet, and a 44 psi system pressure rating, it supports stable fuel delivery for drivability and fuel metering accuracy.\u003c\/p\u003e\u003cp\u003eCompatible With 1986-1989 Mazda 323, 1989 Ford Festiva, and 1988-1989 Mercury Tracer applications, this Delphi FP10439 regulator is a direct-fit service part for vehicles that rely on consistent fuel pressure at the rail or delivery circuit.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eFuel injection pressure regulator for air and fuel delivery systems\u003c\/li\u003e\n\u003cli\u003eMetal construction for durable service in engine bay conditions\u003c\/li\u003e\n\u003cli\u003ePush-in inlet and hose outlet configuration\u003c\/li\u003e\n\u003cli\u003eFixed design with no adjustment provision\u003c\/li\u003e\n\u003cli\u003eSingle inlet and single outlet layout\u003c\/li\u003e\n\u003cli\u003e44 psi system pressure specification\u003c\/li\u003e\n\u003cli\u003eBolt-mounted installation style\u003c\/li\u003e\n\u003cli\u003eNo gauge port\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Description\u003c\/h2\u003e\u003cp\u003eDelphi FP10439 is engineered as an OE-style fuel injection pressure regulator for select compact Ford, Mazda, and Mercury vehicles. Delphi draws on more than a century of OE experience, and that heritage is reflected in the part’s material selection, port design, and pressure specification. The regulator uses a 0.43 in. (11.0 mm) inlet port and a 0.24 in. (6.0 mm) outlet port, with a push-in inlet and hose-style outlet for the listed applications. This part cross-references Standard Ignition PR32 and PR210 for the same application.\u003c\/p\u003e\u003cp\u003eFits 1986-1989 Mazda 323, N\/A. Fits 1989 Ford Festiva, N\/A. Fits 1988-1989 Mercury Tracer, N\/A. Fits 1991-1994 Mercury Capri, N\/A, stamped #B6B313280A.\u003c\/p\u003e\u003ch2\u003eCommon Fuel System Issues\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eFuel pressure that is too high or too low for proper injector operation\u003c\/li\u003e\n\u003cli\u003eHard starting caused by unstable fuel delivery\u003c\/li\u003e\n\u003cli\u003eRough idle or hesitation under acceleration\u003c\/li\u003e\n\u003cli\u003eFuel smell or rich-running symptoms tied to pressure regulation problems\u003c\/li\u003e\n\u003cli\u003eDriveability issues from inconsistent fuel metering\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eVerify the inlet and outlet port sizes, mounting style, and system pressure before installation. Confirm the vehicle’s stamped reference number where applicable, especially on 1991-1994 Mercury Capri applications noted with stamped #B6B313280A. Inspect fuel lines and connections for wear or contamination during replacement to help maintain proper sealing and pressure control.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eDelphi builds aftermarket parts using OE heritage and engineering knowledge developed through long-term supplier experience with major automakers. The FP10439 is manufactured to support consistent fuel system performance in the listed applications.\u003c\/p\u003e","brand":"Delphi","offers":[{"title":"Default Title","offer_id":43388600647861,"sku":"BBMX-FP10439","price":152.27,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/DE_FP10439_Fro.jpg?v=1774712472","url":"https:\/\/www.partcatalog.com\/products\/delphi-fp10439-fuel-injection-pressure-regulator","provider":"PartCatalog","version":"1.0","type":"link"}