{"product_id":"delphi-tc8403-suspension-control-arm-and-ball-joint-assembly-front-left-lower-forward","title":"Delphi TC8403 Suspension Control Arm and Ball Joint Assembly - Front Left Lower Forward","description":"\u003ch2\u003eOE-Style Front Left Lower Forward Control Arm\u003c\/h2\u003e\u003cp\u003eDelphi TC8403 is a suspension control arm and ball joint assembly for the front left lower forward position. It is built for Mercedes-Benz S-Class applications that need a direct replacement with OE-focused dimensions, materials, and pre-greased service readiness.\u003c\/p\u003e\u003cp\u003eFor Mercedes-Benz S550, S600, S450, and S560 models, this Delphi TC8403 assembly supports precise front suspension geometry and consistent steering response. It is also a fitment match for select Maybach S600 and Maybach S650 applications in the same front left lower forward location.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePart number: TC8403\u003c\/li\u003e\n\u003cli\u003eFront left lower forward suspension control arm and ball joint assembly\u003c\/li\u003e\n\u003cli\u003ePre-greased for service-ready installation\u003c\/li\u003e\n\u003cli\u003eBall joint included\u003c\/li\u003e\n\u003cli\u003eBushings included with rubber bushing material\u003c\/li\u003e\n\u003cli\u003eDust boot included with chloroprene rubber construction\u003c\/li\u003e\n\u003cli\u003eMounting hardware included\u003c\/li\u003e\n\u003cli\u003ePremium grade type\u003c\/li\u003e\n\u003cli\u003eClockwise (right) thread direction\u003c\/li\u003e\n\u003cli\u003ePower steering type application\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Description\u003c\/h2\u003e\u003cp\u003eDelphi applies OE-level dimensional and material analysis to this suspension assembly to help maintain proper fit and function in the aftermarket. The TC8403 is engineered with black rubber bushings, a chloroprene rubber dust boot, and a pre-greased ball joint to support smooth articulation and long-term suspension service. Delphi also subjects its steering and suspension components to extreme temperature exposure and extended salt-spray testing to evaluate durability under demanding conditions.\u003c\/p\u003e\u003cp\u003eThis part cross-references Dorman OE Solutions 526-275 for the same application. It is a direct replacement choice for Mercedes-Benz S550, S600, S450, and S560 front suspension service where the front left lower forward control arm and ball joint assembly must match OE-style geometry.\u003c\/p\u003e\u003ch2\u003eCommon Repair Uses\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eRestoring worn front suspension control arm and ball joint function\u003c\/li\u003e\n\u003cli\u003eAddressing clunking or looseness from degraded bushings\u003c\/li\u003e\n\u003cli\u003eCorrecting steering feel affected by front suspension wear\u003c\/li\u003e\n\u003cli\u003eReplacing a damaged dust boot or ball joint assembly\u003c\/li\u003e\n\u003cli\u003eServicing front left lower forward suspension components on Mercedes-Benz S-Class and Maybach models\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\u003cp\u003eVerify the front left lower forward position before installation and confirm thread direction, mounting hole diameter, and steering type against the original part. Because this assembly includes bushings, a dust boot, a ball joint, and mounting hardware, it is suited to a complete replacement of the worn unit rather than a partial rebuild.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFits 2018-2020 Mercedes-Benz S450, front left lower forward\u003c\/li\u003e\n\u003cli\u003eFits 2018-2020 Mercedes-Benz S560, front left lower forward\u003c\/li\u003e\n\u003cli\u003eFits 2019-2020 Mercedes-Benz S560e, front left lower forward\u003c\/li\u003e\n\u003cli\u003eFits 2018-2019 Mercedes-Benz Maybach S650, front left lower forward\u003c\/li\u003e\n\u003cli\u003eFits 2016-2017 Mercedes-Benz Maybach S600, front left lower forward\u003c\/li\u003e\n\u003cli\u003eFits 2014-2017 Mercedes-Benz S550, front left lower forward\u003c\/li\u003e\n\u003cli\u003eFits 2015-2017 Mercedes-Benz S550e, front left lower forward\u003c\/li\u003e\n\u003cli\u003eFits 2015-2017 Mercedes-Benz S600, front left lower forward\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eDelphi uses OE-focused testing and material validation for its steering and suspension portfolio, including temperature cycling and salt-spray exposure, to support consistent performance and fit. The TC8403 is built as a premium replacement assembly for Mercedes-Benz and Maybach front suspension service.\u003c\/p\u003e","brand":"Delphi","offers":[{"title":"Default Title","offer_id":52435700973749,"sku":"BBMX-TC8403","price":101.68,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/DE_TC8403_Fro.jpg?v=1777863277","url":"https:\/\/www.partcatalog.com\/products\/delphi-tc8403-suspension-control-arm-and-ball-joint-assembly-front-left-lower-forward","provider":"PartCatalog","version":"1.0","type":"link"}