{"product_id":"dorman-539-855-suspension-ball-joint-front-upper","title":"Dorman 539-855 Suspension Ball Joint - Front Upper","description":"\u003ch2\u003eDorman 539-855 Front Upper Ball Joint\u003c\/h2\u003e\u003cp\u003eDorman 539-855 is a threaded suspension ball joint engineered as a direct replacement for specific front upper applications. It is built from steel with a protective dust boot and mounting hardware included, making it a practical service part for Mazda 6, Ford Fusion, Lincoln MKZ, Mercury Milan, and Lincoln Zephyr front suspension repairs.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eSteel construction with a grey finish\u003c\/li\u003e\n\u003cli\u003eThreaded design with tapered stud\u003c\/li\u003e\n\u003cli\u003eDust boot included; polychloroprene boot material\u003c\/li\u003e\n\u003cli\u003eMounting hardware included\u003c\/li\u003e\n\u003cli\u003ePremium suspension grade type\u003c\/li\u003e\n\u003cli\u003eNon-greaseable, non-adjustable design\u003c\/li\u003e\n\u003cli\u003e12 mm wrench size\u003c\/li\u003e\n\u003cli\u003ePart number 539-855\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Description\u003c\/h2\u003e\u003cp\u003eThis Dorman suspension ball joint is precision-engineered and tested for reliable OE-style replacement on specific vehicles. It is a front upper ball joint for 2003-2007 Mazda 6, 2008-2013 Mazda 6, 2006-2012 Ford Fusion, 2007-2012 Lincoln MKZ, 2006-2011 Mercury Milan, and 2006 Lincoln Zephyr. The threaded, press-in style construction and tapered stud are suited to front suspension service where a worn joint can affect steering response and alignment stability. This part cross-references MOOG Chassis Products (e.g., K500041, K500381) for the same application.\u003c\/p\u003e\u003ch2\u003eWhat It Helps Fix\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eFront-end clunking or popping from a worn upper ball joint\u003c\/li\u003e\n\u003cli\u003eExcessive play in the front suspension\u003c\/li\u003e\n\u003cli\u003eUneven tire wear related to suspension looseness\u003c\/li\u003e\n\u003cli\u003eLoose or imprecise steering feel\u003c\/li\u003e\n\u003cli\u003eInspection failure caused by ball joint wear\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eFits 2003-2007 Mazda 6, front upper; 2008-2013 Mazda 6, front upper; 2006-2012 Ford Fusion, front upper; 2007-2012 Lincoln MKZ, front upper; 2006-2011 Mercury Milan, front upper; and 2006 Lincoln Zephyr, front upper. Confirm the vehicle’s front upper suspension configuration before installation. Because this is a press-in style ball joint, proper removal and installation tools are recommended to avoid damage to the control arm or surrounding components. Verify stud taper and hardware fitment during assembly, and complete a front-end alignment after service.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eDorman positions this part as a precision-engineered replacement that is rigorously tested for dependable service on the listed applications. Part number 539-855 is built to meet the demands of front suspension repair on Mazda 6, Ford Fusion, Lincoln MKZ, Mercury Milan, and Lincoln Zephyr models.\u003c\/p\u003e","brand":"Dorman","offers":[{"title":"Default Title","offer_id":52763269890229,"sku":"BKKY-539-855","price":39.52,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/RB_539855_Bac.jpg?v=1783146058","url":"https:\/\/www.partcatalog.com\/products\/dorman-539-855-suspension-ball-joint-front-upper","provider":"PartCatalog","version":"1.0","type":"link"}