{"product_id":"dorman-986-421-drive-shaft-rear","title":"Dorman 986-421 Drive Shaft - Rear","description":"\u003ch2\u003eDorman 986-421 Drive Shaft Overview\u003c\/h2\u003e\u003cp\u003eDorman 986-421 is a complete drive shaft assembly for driveline repair where a direct replacement is needed. It arrives pre-balanced and uses 100% new yokes, tubes, universal joints, and other core shaft components for a ready-to-install service part.\u003c\/p\u003e\u003cp\u003eBuilt with a steel shaft, 2.5 in diameter, and 70.75 in compressed length, this drive shaft is a practical choice for vehicle-specific driveline service on compatible applications such as select Chevrolet Silverado and GMC Sierra models. The Dorman 986-421 is also referenced by part number 1234104106 for the same application.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eComplete drive shaft assembly for driveline replacement\u003c\/li\u003e\n\u003cli\u003ePre-balanced for installation readiness\u003c\/li\u003e\n\u003cli\u003e100% new yokes, tubes, and universal joints\u003c\/li\u003e\n\u003cli\u003eSteel shaft construction\u003c\/li\u003e\n\u003cli\u003e70.75 in compressed length and 2.5 in shaft diameter\u003c\/li\u003e\n\u003cli\u003eTriprong end 1 and triprong end 2 configuration\u003c\/li\u003e\n\u003cli\u003eUniversal joints included; CV joints not included\u003c\/li\u003e\n\u003cli\u003eNon-greaseable design with no slip yoke\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Product Description\u003c\/h2\u003e\u003cp\u003eDorman 986-421 is engineered as a direct replacement drive shaft assembly for driveline service where the original shaft is worn, damaged, or out of balance. The assembly uses a steel tube with 0.065 in wall thickness and a fixed overall length of 70.75 in, making it a straightforward option for applications that require the same compressed length and triprong-to-triprong end configuration. For buyers searching for a replacement drive shaft for Chevrolet Silverado or GMC Sierra driveline repair, this part number provides a complete assembly approach rather than rebuilding individual shaft components.\u003c\/p\u003e\u003cp\u003eThis part number, Dorman 986-421, is intended for compatible vehicle applications that call for a non-adjustable shaft with universal joints included and no CV joints. It is a practical fitment-focused option for service work where maintaining driveline geometry and balance is important.\u003c\/p\u003e\u003ch2\u003eWhat It Helps Address\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eVibration caused by a worn or out-of-balance driveshaft\u003c\/li\u003e\n\u003cli\u003eClunking or driveline noise from failed universal joints\u003c\/li\u003e\n\u003cli\u003eDamage to the original shaft tube or yokes\u003c\/li\u003e\n\u003cli\u003eService needs after driveline wear on compatible Chevrolet Silverado and GMC Sierra trucks\u003c\/li\u003e\n\u003cli\u003eReplacement of a shaft that no longer maintains proper length or balance\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eVerify compressed length, end type, shaft diameter, and driveline configuration before installation. This assembly is not adjustable and does not include a slip yoke, so matching the original application is important. Confirm that the vehicle calls for a triprong end on both ends and that the existing driveline setup does not require CV joints. Professional installation and post-installation driveline inspection are recommended to confirm alignment and smooth operation.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eDorman supplies this drive shaft as a complete replacement assembly with new core components and pre-balanced construction to support consistent fit and function in the intended application. The part is built to service the driveline as a direct replacement component for compatible vehicles.\u003c\/p\u003e","brand":"Dorman","offers":[{"title":"Default Title","offer_id":52808208482485,"sku":"BKKY-986-421","price":476.48,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/RB_986421_Fro.jpg?v=1784182642","url":"https:\/\/www.partcatalog.com\/products\/dorman-986-421-drive-shaft-rear","provider":"PartCatalog","version":"1.0","type":"link"}