{"product_id":"dorman-43-1289hd-leaf-spring-assembly-rear","title":"Dorman 43-1289HD Leaf Spring Assembly - Rear","description":"\u003ch2\u003eDorman 43-1289HD Leaf Spring Assembly\u003c\/h2\u003e\u003cp\u003eDorman 43-1289HD is a heavy-duty rear leaf spring assembly built from steel for vehicles that carry payload and need stable suspension performance. With a 10-leaf design, 3-inch leaf width, and 8,000 load rate, it is built for demanding rear suspension service on applications such as Chevrolet Silverado and GMC Sierra trucks where consistent ride support matters.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eSteel construction for strength and durability\u003c\/li\u003e\n\u003cli\u003eHeavy-duty suspension grade for rear axle use\u003c\/li\u003e\n\u003cli\u003e10-leaf pack with 3-inch leaf width\u003c\/li\u003e\n\u003cli\u003e8,000 load rate for payload support\u003c\/li\u003e\n\u003cli\u003eUp-turned eye ends with bushings included\u003c\/li\u003e\n\u003cli\u003eBlack finish and black bushings\u003c\/li\u003e\n\u003cli\u003eRear axle orientation\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eProduct Details\u003c\/h2\u003e\u003cp\u003eThis Dorman leaf spring assembly, part number 43-1289HD, is engineered to restore rear suspension support when the original spring has lost arch, sagged under load, or no longer controls axle movement properly. The steel leaf pack measures 30.75 inches in length B, with a 5.322 pack thickness and 5.125 leaf spring arch length, helping maintain the vehicle’s ride height and load-carrying balance. This part cross-references Monroe Shocks \u0026amp; Struts (e.g., 172286, 182286) for the same application.\u003c\/p\u003e\u003ch2\u003eWhat It Helps Address\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eRear-end sag under cargo or towing load\u003c\/li\u003e\n\u003cli\u003eUneven ride height from worn leaf springs\u003c\/li\u003e\n\u003cli\u003eExcessive rear suspension movement\u003c\/li\u003e\n\u003cli\u003eReduced stability over bumps and rough roads\u003c\/li\u003e\n\u003cli\u003eLoss of proper axle support in heavy-duty use\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eVerify axle orientation, leaf width, end attachment type, and bushing configuration before ordering. This assembly includes bushings and does not require axle modification. Mounting hardware is not included. For best results, inspect related suspension components such as shackles, U-bolts, and spring hangers during service. Confirm the application against the vehicle’s rear suspension layout before installation on Chevrolet Silverado or GMC Sierra models.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eDorman OE Solutions parts are built to match the needs of replacement suspension service with application-focused dimensions and materials. Part number 43-1289HD is identified for rear leaf spring replacement use and is supported by Dorman’s OE Solutions product line.\u003c\/p\u003e","brand":"Dorman","offers":[{"title":"Default Title","offer_id":52752753361077,"sku":"BKKY-43-1289HD","price":564.79,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/RB_431289HD_Fro.jpg?v=1782886217","url":"https:\/\/www.partcatalog.com\/products\/dorman-43-1289hd-leaf-spring-assembly-rear","provider":"PartCatalog","version":"1.0","type":"link"}