{"product_id":"delphi-tc8421-suspension-control-arm-rear-left-lower-rearward","title":"Delphi TC8421 Suspension Control Arm - Rear Left Lower Rearward","description":"\u003ch2\u003eDelphi TC8421 Rear Left Lower Rearward Control Arm\u003c\/h2\u003e\u003cp\u003eDelphi TC8421 is a suspension control arm built for the rear left lower rearward position on select Mercedes-Benz models. It combines a steel, bent-arm design with rubber bushings and a painted finish for standard replacement service on the CL600, CL63 AMG, CL65 AMG, S600, S63 AMG, and S65 AMG.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePart number: TC8421\u003c\/li\u003e\n\u003cli\u003eRear left lower rearward suspension control arm\u003c\/li\u003e\n\u003cli\u003eSteel construction with casting\/forged manufacturing\u003c\/li\u003e\n\u003cli\u003eBlack painted finish\u003c\/li\u003e\n\u003cli\u003eRubber bushings included\u003c\/li\u003e\n\u003cli\u003eStandard replacement grade\u003c\/li\u003e\n\u003cli\u003eNon-adjustable and non-greaseable design\u003c\/li\u003e\n\u003cli\u003eNo pre-greasing and no grease fitting included\u003c\/li\u003e\n\u003cli\u003eCompatible with Mercedes-Benz OE reference 221 350 17 06\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Description\u003c\/h2\u003e\u003cp\u003eDelphi applies OE-focused dimensional and material analysis to this control arm to support proper fit and suspension geometry on Mercedes-Benz CL600, CL63 AMG, CL65 AMG, S600, S63 AMG, and S65 AMG applications. The TC8421 uses a steel body with a bent shape, black rubber bushings, and a painted surface finish, making it a direct replacement choice for the rear left lower rearward position. This part cross-references Mercedes-Benz OE number 221 350 17 06 for the same application. Delphi TC8421 is a practical option when replacing a worn rear suspension control arm on Mercedes-Benz CL600 and S-Class models.\u003c\/p\u003e\u003ch2\u003eWhat This Part Helps Address\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eExcessive rear suspension play or looseness\u003c\/li\u003e\n\u003cli\u003eClunking or knocking from the rear suspension area\u003c\/li\u003e\n\u003cli\u003eUneven tire wear caused by worn control arm bushings\u003c\/li\u003e\n\u003cli\u003eImprecise rear suspension alignment\u003c\/li\u003e\n\u003cli\u003eHandling instability from deteriorated rear control arm components\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eInstall Delphi TC8421 in the rear left lower rearward position only. Verify the vehicle application against the listed Mercedes-Benz fitment before installation, and inspect adjacent suspension components, bushings, and alignment settings during service. Because this control arm is not adjustable and does not include mounting hardware, reuse or source the correct hardware as required by the vehicle service procedure. A professional alignment is recommended after replacement.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eDelphi subjects its OE-based steering and suspension components to temperature extremes below -40 degrees C and above 120 degrees C, along with extended salt-spray exposure testing. That validation process supports material durability and dimensional consistency for Mercedes-Benz rear suspension service.\u003c\/p\u003e\u003ch2\u003eCompatible Vehicles\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eFits 2007-2014 Mercedes-Benz CL600, rear left lower rearward\u003c\/li\u003e\n\u003cli\u003eFits 2011-2014 Mercedes-Benz CL63 AMG, rear left lower rearward\u003c\/li\u003e\n\u003cli\u003eFits 2008-2014 Mercedes-Benz CL65 AMG, rear left lower rearward\u003c\/li\u003e\n\u003cli\u003eFits 2007-2013 Mercedes-Benz S600, rear left lower rearward\u003c\/li\u003e\n\u003cli\u003eFits 2011-2013 Mercedes-Benz S63 AMG, rear left lower rearward\u003c\/li\u003e\n\u003cli\u003eFits 2007-2013 Mercedes-Benz S65 AMG, rear left lower rearward\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Delphi","offers":[{"title":"Default Title","offer_id":52435701268661,"sku":"BBMX-TC8421","price":71.96,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/DE_TC8421_FRO.jpg?v=1777863337","url":"https:\/\/www.partcatalog.com\/products\/delphi-tc8421-suspension-control-arm-rear-left-lower-rearward","provider":"PartCatalog","version":"1.0","type":"link"}