{"product_id":"dorman-528-121-suspension-control-arm-rear-left-upper-forward","title":"Dorman 528-121 Suspension Control Arm - Rear Left Upper Forward","description":"\u003ch2\u003eDorman 528-121 Rear Left Upper Forward Control Arm\u003c\/h2\u003e\u003cp\u003eThis Dorman suspension control arm is a direct replacement for the rear left upper forward position on select BMW vehicles. Built from steel with a casting\/forged construction and powder-coated finish, it is engineered for dependable suspension service on BMW 528i, 535i, 550i, 640i, 650i, and 740i applications.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eDirect replacement suspension control arm for the rear left upper forward location\u003c\/li\u003e\n\u003cli\u003eSteel construction with casting\/forged design for strength and fit\u003c\/li\u003e\n\u003cli\u003ePowder-coated black finish for added surface protection\u003c\/li\u003e\n\u003cli\u003eRubber bushings included for OE-style suspension isolation\u003c\/li\u003e\n\u003cli\u003eStandard replacement grade for select BMW rear suspension repairs\u003c\/li\u003e\n\u003cli\u003ePart number 528-121 for easy identification and ordering\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Description\u003c\/h2\u003e\u003cp\u003eDorman 528-121 is a rear left upper forward suspension control arm designed for specific BMW rear suspension layouts. It is compatible with a wide range of BMW 5 Series, 6 Series, and 7 Series models, including 2011-2016 BMW 528i, 2011-2016 BMW 535i, 2011-2016 BMW 550i, 2012-2018 BMW 640i, 2012-2018 BMW 650i, and 2013-2015 BMW 740i. The steel body, bent shape, and rubber bushings are selected to match the demands of rear suspension service while maintaining proper alignment geometry. This part cross-references MOOG Chassis Products RK642863 for the same application.\u003c\/p\u003e\u003ch2\u003eCommon Problems This Part Can Address\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eRear suspension clunking or knocking from worn control arm bushings\u003c\/li\u003e\n\u003cli\u003eUneven tire wear caused by loose or deteriorated rear suspension components\u003c\/li\u003e\n\u003cli\u003eExcessive rear-end play or instability during braking and cornering\u003c\/li\u003e\n\u003cli\u003eAlignment issues related to a worn rear left upper forward arm\u003c\/li\u003e\n\u003cli\u003eRestoration of factory-style suspension response on BMW rear suspension systems\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eVerify vehicle fitment by year, model, and rear left upper forward position before installation. This control arm is not pre-greased, does not include a ball joint, and does not include mounting hardware. Because suspension components affect alignment, a professional wheel alignment is recommended after replacement. Confirm bushing orientation and torque fasteners to the vehicle manufacturer’s specifications during installation.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eDorman designs this suspension control arm as a precision-engineered replacement and subjects it to rigorous testing for reliable service on the specified BMW applications. Part number 528-121 is built to serve as a standard replacement for worn original equipment components.\u003c\/p\u003e","brand":"Dorman","offers":[{"title":"Default Title","offer_id":52756085637301,"sku":"BKKY-528-121","price":81.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/RB_528121_Fro.jpg?v=1782972963","url":"https:\/\/www.partcatalog.com\/products\/dorman-528-121-suspension-control-arm-rear-left-upper-forward","provider":"PartCatalog","version":"1.0","type":"link"}