{"product_id":"delphi-tc4577-suspension-control-arm-and-ball-joint-assembly-front-left-upper","title":"Delphi TC4577 Suspension Control Arm and Ball Joint Assembly - Front Left Upper","description":"\u003ch2\u003eOE-Style Front Left Upper Control Arm\u003c\/h2\u003e\u003cp\u003eDelphi TC4577 is a front left upper suspension control arm and ball joint assembly built for direct replacement service on select Tesla models. It combines a steel casting\/forged construction with a pre-greased, sealed ball joint and included bushings for a complete front suspension repair.\u003c\/p\u003e\u003cp\u003eCompatible with 2017-2023 Tesla 3 and 2020-2023 Tesla Y, front left upper. Delphi applies OE-focused dimensional and material analysis to help maintain proper fit and suspension geometry on Tesla 3 and Tesla Y applications.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePart number TC4577\u003c\/li\u003e\n\u003cli\u003eFront left upper control arm and ball joint assembly\u003c\/li\u003e\n\u003cli\u003eSteel construction with painted finish\u003c\/li\u003e\n\u003cli\u003eBall joint included with machined mounting type and pinch-style stud\u003c\/li\u003e\n\u003cli\u003ePre-greased, non-greaseable design\u003c\/li\u003e\n\u003cli\u003eRubber bushings and rubber dust boot included\u003c\/li\u003e\n\u003cli\u003eMounting hardware included\u003c\/li\u003e\n\u003cli\u003eStandard replacement grade\u003c\/li\u003e\n\u003cli\u003eBlack control arm, bushings, and boot components\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Description\u003c\/h2\u003e\u003cp\u003eDelphi TC4577 is engineered as a direct-fit suspension control arm assembly for the front left upper position. It features a casting\/forged steel arm, rubber bushings, a rubber dust boot, and a pre-installed ball joint to simplify front-end service. The assembly is painted for corrosion resistance and is supplied with mounting hardware for installation.\u003c\/p\u003e\u003cp\u003eDelphi validates its steering and suspension components through temperature and salt-spray exposure testing, along with dimensional and material analysis, to support OE-style fit and consistent performance. This part cross-references MOOG Chassis Products RK623788 for the same application.\u003c\/p\u003e\u003ch2\u003eWhat It Helps Repair\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eClunking or looseness from a worn front upper control arm\u003c\/li\u003e\n\u003cli\u003eUneven tire wear caused by suspension play\u003c\/li\u003e\n\u003cli\u003eSteering wander or reduced front-end stability\u003c\/li\u003e\n\u003cli\u003eBall joint noise or binding in the upper control arm assembly\u003c\/li\u003e\n\u003cli\u003eRubber bushing deterioration in the front suspension\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eInstall TC4577 in the front left upper position only. Verify alignment after replacement, since control arm service can affect camber and toe settings. Confirm the pinch-style ball joint stud and 2-hole mounting pattern match the original Tesla 3 or Tesla Y suspension layout before installation.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eDelphi uses OE-based engineering standards and extreme-environment testing for its steering and suspension portfolio, including cold-temperature, high-temperature, and salt-spray exposure validation. The TC4577 is built as a standard replacement part for confirmed fitment on 2017-2023 Tesla 3 and 2020-2023 Tesla Y, front left upper.\u003c\/p\u003e","brand":"Delphi","offers":[{"title":"Default Title","offer_id":52435695304885,"sku":"BBMX-TC4577","price":130.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/DE_TC4577_FRO.jpg?v=1777862264","url":"https:\/\/www.partcatalog.com\/products\/delphi-tc4577-suspension-control-arm-and-ball-joint-assembly-front-left-upper","provider":"PartCatalog","version":"1.0","type":"link"}