{"product_id":"dorman-527-021-suspension-control-arm-and-ball-joint-assembly-rear-left-upper","title":"Dorman 527-021 Suspension Control Arm and Ball Joint Assembly - Rear Left Upper","description":"\u003ch2\u003eDorman 527-021 Rear Left Upper Control Arm\u003c\/h2\u003e\u003cp\u003eDorman 527-021 is a direct replacement suspension control arm and ball joint assembly for specific Subaru applications. It is built to restore smooth ride quality, directional stability, and predictable handling on the rear left upper position.\u003c\/p\u003e\u003cp\u003eCompatible with 2010-2019 Subaru Outback and 2009-2013 Subaru Forester, this OE-style assembly is a practical choice when the original rear suspension arm shows wear, looseness, or noise. The powder-coated steel construction and reinforced design support dependable service in everyday driving.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eDirect replacement for the original equipment suspension control arm and ball joint assembly\u003c\/li\u003e\n\u003cli\u003eFits 2010-2019 Subaru Outback, rear left upper\u003c\/li\u003e\n\u003cli\u003eFits 2009-2013 Subaru Forester, rear left upper\u003c\/li\u003e\n\u003cli\u003eSteel control arm with casting\/forged construction\u003c\/li\u003e\n\u003cli\u003ePowder-coated finish for added corrosion resistance\u003c\/li\u003e\n\u003cli\u003eIncludes bushings, dust boot, ball joint, mounting hardware, and locking nut\u003c\/li\u003e\n\u003cli\u003ePre-greased assembly with machined ball joint mounting and pinch-style stud\u003c\/li\u003e\n\u003cli\u003eReinforced standard replacement design\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Description\u003c\/h2\u003e\u003cp\u003eThis Dorman suspension control arm and ball joint assembly is engineered for the rear left upper suspension position on select Subaru Outback and Subaru Forester models. It is built as a standard replacement for the OE part, using a steel arm with a powder-coated finish and reinforced construction to support consistent suspension geometry. The assembly includes the ball joint, bushings, and dust boot, and it arrives pre-greased for service readiness. This part cross-references MOOG Chassis Products RK623395 for the same application.\u003c\/p\u003e\u003ch2\u003eWhat It Helps Address\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eClunking or knocking from a worn rear upper control arm\u003c\/li\u003e\n\u003cli\u003eExcessive suspension play that affects steering feel and stability\u003c\/li\u003e\n\u003cli\u003eUneven tire wear caused by worn rear suspension components\u003c\/li\u003e\n\u003cli\u003eLoose or degraded ball joint movement\u003c\/li\u003e\n\u003cli\u003eRide quality changes from deteriorated bushings or control arm wear\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eVerify the rear left upper position before installation and confirm vehicle year, make, and model against the fitment list. The assembly uses a machined ball joint mount and pinch-style stud, so proper alignment of the joint and fasteners is important during installation. After replacement, a wheel alignment is recommended to help restore suspension geometry on the Subaru Outback or Subaru Forester.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eDorman designs this assembly as a direct OE replacement and uses an industry-focused evaluation process to help deliver smooth ride control, directional stability, and predictable suspension response.\u003c\/p\u003e","brand":"Dorman","offers":[{"title":"Default Title","offer_id":52859191918773,"sku":"BKKY-527-021","price":123.52,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/RB_527021_FRO.jpg?v=1784873469","url":"https:\/\/www.partcatalog.com\/products\/dorman-527-021-suspension-control-arm-and-ball-joint-assembly-rear-left-upper","provider":"PartCatalog","version":"1.0","type":"link"}