{"product_id":"dorman-946-251-drive-shaft-rear","title":"Dorman 946-251 Drive Shaft - Rear","description":"\u003ch2\u003eRear Driveshaft for 1990 Nissan D21\u003c\/h2\u003e\u003cp\u003eThis Dorman rear driveshaft is a complete replacement assembly for the 1990 Nissan D21. It arrives pre-balanced and uses 100% new yokes, tubes, CV joints, and universal joints for a direct driveline service solution.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eComplete rear driveshaft assembly for rear-position applications\u003c\/li\u003e\n\u003cli\u003ePre-balanced for installation readiness\u003c\/li\u003e\n\u003cli\u003eSteel shaft construction with a 2.5 in diameter\u003c\/li\u003e\n\u003cli\u003e59.625 in overall drive shaft length\u003c\/li\u003e\n\u003cli\u003e0.083 in wall thickness\u003c\/li\u003e\n\u003cli\u003e100% new yokes, tubes, constant velocity joints, and universal joints\u003c\/li\u003e\n\u003cli\u003eNon-greaseable design with fixed overall length\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Description\u003c\/h2\u003e\u003cp\u003eBuilt for the 1990 Nissan D21, Dorman part number 946-251 is a rear drive shaft assembly made from steel and engineered to replace a worn or damaged driveline component without rebuilding the original shaft. The assembly is pre-balanced and supplied with new yokes, tubes, CV joints, and universal joints to support smooth power transfer from the transmission or transfer case to the rear axle. If you are searching for a 1990 Nissan D21 rear driveshaft replacement, Dorman 946-251 provides the key dimensions and construction needed for a direct-fit service part.\u003c\/p\u003e\u003cp\u003eThis part cross-references Nissan 3730034G10 for the same application.\u003c\/p\u003e\u003ch2\u003eWhat It Helps Fix\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eDriveline vibration from a worn or out-of-balance shaft\u003c\/li\u003e\n\u003cli\u003eClunking or driveline noise from worn joints\u003c\/li\u003e\n\u003cli\u003eExcess play caused by damaged yokes or tubes\u003c\/li\u003e\n\u003cli\u003eLoss of smooth rear-wheel power delivery\u003c\/li\u003e\n\u003cli\u003eService issues related to a bent or fatigued rear driveshaft\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eVerify rear-position fitment before installation on the 1990 Nissan D21. Compare shaft length, diameter, and mounting points to the original unit before removal. Because this assembly is not adjustable, correct application matching is important for proper driveline alignment and operation. Inspect related driveline components, including mounts and companion flanges, during replacement.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eDorman supplies this drive shaft assembly as a complete replacement part with new internal and external components. The pre-balanced design supports consistent installation quality and dependable driveline service.\u003c\/p\u003e","brand":"Dorman","offers":[{"title":"Default Title","offer_id":52798251401397,"sku":"BKKY-946-251","price":698.87,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/RB_946251_Ang.jpg?v=1784007450","url":"https:\/\/www.partcatalog.com\/products\/dorman-946-251-drive-shaft-rear","provider":"PartCatalog","version":"1.0","type":"link"}