{"product_id":"dorman-521-979-suspension-trailing-arm","title":"Dorman 521-979 Suspension Trailing Arm - Rear Upper","description":"\u003ch2\u003eDurable Suspension Trailing Arm for Buick, Chevrolet, GMC, and Oldsmobile\u003c\/h2\u003e\u003cp\u003eThe Dorman 521-979 suspension trailing arm is engineered to provide reliable support and stability for your vehicle's rear suspension system. Designed specifically for select Buick, Chevrolet, GMC, and Oldsmobile models, this trailing arm ensures proper alignment and handling performance.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eConstructed from high-strength steel with a coated finish for corrosion resistance\u003c\/li\u003e\n\u003cli\u003eIncludes black rubber bushings for effective vibration dampening\u003c\/li\u003e\n\u003cli\u003eLength of 262.5 mm to match OEM specifications\u003c\/li\u003e\n\u003cli\u003ePress-in type on one end for secure installation\u003c\/li\u003e\n\u003cli\u003eWelded attachment type for enhanced durability\u003c\/li\u003e\n\u003cli\u003eCompatible with Buick Bravada, Chevrolet Trailblazer, GMC Envoy, Oldsmobile SSR, and Rainier\u003c\/li\u003e\n\u003cli\u003ePart number 521-979 for precise identification\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eProduct Details and Specifications\u003c\/h2\u003e\u003cp\u003eThis Dorman suspension trailing arm is made from durable steel and features a coated black finish to resist rust and wear. The included rubber bushings, also black in color, help absorb road vibrations and reduce noise, contributing to a smoother ride. Measuring 262.5 mm in length, this trailing arm matches the original equipment dimensions to maintain proper suspension geometry. The press-in end type ensures a tight fit during installation, while the welded attachment type adds strength to the component. This part is designed as a regular grade, non-adjustable control arm casting\/forged type, without ball joints or grease fittings included.\u003c\/p\u003e\u003ch2\u003eCompatible Vehicles and Applications\u003c\/h2\u003e\u003cp\u003eThis suspension trailing arm is compatible with the following vehicles:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eBuick Bravada\u003c\/li\u003e\n\u003cli\u003eChevrolet Trailblazer\u003c\/li\u003e\n\u003cli\u003eGMC Envoy\u003c\/li\u003e\n\u003cli\u003eOldsmobile SSR\u003c\/li\u003e\n\u003cli\u003eOldsmobile Rainier\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eUse part number 521-979 to ensure compatibility with your specific model and year.\u003c\/p\u003e\u003ch2\u003eCommon Issues Addressed by This Trailing Arm\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eExcessive rear suspension play or looseness\u003c\/li\u003e\n\u003cli\u003eUneven tire wear due to misalignment\u003c\/li\u003e\n\u003cli\u003eClunking or knocking noises from the rear suspension\u003c\/li\u003e\n\u003cli\u003eReduced handling stability and control\u003c\/li\u003e\n\u003cli\u003eVibration or harshness during driving\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eVerify vehicle compatibility using make, model, and part number before installation\u003c\/li\u003e\n\u003cli\u003eInspect mounting points and hardware for wear or damage prior to installation\u003c\/li\u003e\n\u003cli\u003eUse appropriate tools to press in bushings securely\u003c\/li\u003e\n\u003cli\u003eTorque all fasteners to manufacturer specifications\u003c\/li\u003e\n\u003cli\u003eAlignment check is recommended after installation to ensure proper suspension geometry\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eDorman suspension components are manufactured to meet or exceed OEM standards for fit, form, and function. The 521-979 trailing arm undergoes rigorous quality control to ensure durability and performance. While specific warranty details may vary, Dorman typically offers limited warranties covering defects in materials and workmanship. Consult product documentation for exact warranty terms.\u003c\/p\u003e","brand":"Dorman","offers":[{"title":"Default Title","offer_id":43997658251445,"sku":"BKKY-521-979","price":69.34,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/RB_521979_Fro.jpg?v=1775007965","url":"https:\/\/www.partcatalog.com\/products\/dorman-521-979-suspension-trailing-arm","provider":"PartCatalog","version":"1.0","type":"link"}