{"product_id":"dorman-521-749-suspension-control-arm-and-ball-joint-assembly","title":"Dorman 521-749 Suspension Control Arm and Ball Joint Assembly - Front Left Lower Rearward","description":"\u003ch2\u003eOverview of Dorman Suspension Control Arm and Ball Joint Assembly\u003c\/h2\u003e\u003cp\u003eThe Dorman 521-749 suspension control arm and ball joint assembly is designed for precise fitment on Audi A8 Quattro, Volkswagen Phaeton, and S8 models. This assembly combines a durable aluminum control arm with a pre-installed ball joint to restore suspension performance and handling.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003ePre-greased ball joint for immediate use\u003c\/li\u003e\n\u003cli\u003eIncludes rubber bushings and mounting hardware\u003c\/li\u003e\n\u003cli\u003eAluminum control arm with casting\/forged construction\u003c\/li\u003e\n\u003cli\u003ePress-in ball joint with threaded stud (14 mm thread diameter)\u003c\/li\u003e\n\u003cli\u003eCompatible with Audi A8 Quattro, Volkswagen Phaeton, and S8\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Product Features and Specifications\u003c\/h2\u003e\u003cp\u003eThe Dorman 521-749 control arm assembly features a lightweight aluminum control arm finished in black, measuring up to 288.5 mm in width and 237 mm in length. The assembly includes rubber bushings to reduce vibration and noise, enhancing ride comfort. The ball joint is press-in mounted and comes pre-installed with a threaded stud for secure attachment. This suspension grade component is designed for light-duty applications and includes one mounting hole with a diameter of 12.3 mm. Mounting hardware is included to facilitate installation without additional parts.\u003c\/p\u003e\u003ch2\u003eCompatible Vehicles and Application\u003c\/h2\u003e\u003cp\u003eThis suspension control arm and ball joint assembly is compatible with select Audi and Volkswagen models, specifically the Audi A8 Quattro, Volkswagen Phaeton, and S8. The part number 521-749 ensures proper fitment and function for these vehicles, making it a reliable replacement for worn or damaged suspension components.\u003c\/p\u003e\u003ch2\u003eCommon Suspension Issues Addressed\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eWorn or damaged control arm bushings causing steering instability\u003c\/li\u003e\n\u003cli\u003eBall joint wear leading to uneven tire wear or clunking noises\u003c\/li\u003e\n\u003cli\u003eCorroded or bent control arms affecting wheel alignment\u003c\/li\u003e\n\u003cli\u003eVibration and poor handling due to suspension component failure\u003c\/li\u003e\n\u003cli\u003eLoose or damaged mounting hardware impacting suspension integrity\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eInstallation of the Dorman 521-749 assembly requires basic suspension knowledge and tools. Since the ball joint is pre-installed and pre-greased, no additional lubrication is necessary during installation. Ensure the mounting hole aligns correctly with the vehicle’s frame and torque all hardware to manufacturer specifications. This assembly is not adjustable, so proper alignment should be verified after installation.\u003c\/p\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eDorman suspension components are manufactured to meet or exceed OEM standards. The 521-749 control arm and ball joint assembly undergoes rigorous quality checks to ensure durability and performance. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in materials and workmanship.\u003c\/p\u003e","brand":"Dorman","offers":[{"title":"Default Title","offer_id":43997383721141,"sku":"BKKY-521-749","price":132.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/RB_521749_Fro.jpg?v=1775007917","url":"https:\/\/www.partcatalog.com\/products\/dorman-521-749-suspension-control-arm-and-ball-joint-assembly","provider":"PartCatalog","version":"1.0","type":"link"}