{"product_id":"dorman-946-221-drive-shaft-rear","title":"Dorman 946-221 Drive Shaft - Rear","description":"\u003ch2\u003eRear Drive Shaft for Nissan D21\u003c\/h2\u003e\u003cp\u003eThis Dorman OE FIX rear drive shaft is built for 1986-1987 Nissan D21 applications and addresses a common service issue found on original shafts with permanently staked universal joints. Part number 946-221 replaces the rear driveline assembly with a design that allows the U-joints to be serviced separately for easier maintenance.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFits 1986-1987 Nissan D21, rear\u003c\/li\u003e\n\u003cli\u003eSteel shaft construction\u003c\/li\u003e\n\u003cli\u003e2.5 in. shaft diameter\u003c\/li\u003e\n\u003cli\u003e68.75 in. drive shaft length\u003c\/li\u003e\n\u003cli\u003e0.065 in. shaft wall thickness\u003c\/li\u003e\n\u003cli\u003eNon-greaseable design\u003c\/li\u003e\n\u003cli\u003eFixed-length shaft; not adjustable\u003c\/li\u003e\n\u003cli\u003ePackage contents: 1 rear driveshaft\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eServiceable OE FIX Design\u003c\/h2\u003e\u003cp\u003eUnlike the original rear drive shaft on select Nissan D21 trucks, this OE FIX replacement uses serviceable universal joints to simplify future driveline maintenance. The steel construction and regular-grade design support direct replacement needs for rear drive shaft service on 1986-1987 Nissan D21 models. Part number 946-221 is a practical option when the original shaft has worn U-joints or requires a complete rear driveshaft replacement.\u003c\/p\u003e\u003cp\u003eThis part cross-references 3700019W15 for the same application.\u003c\/p\u003e\u003ch2\u003eCommon Problems This Part Can Address\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eWorn or noisy rear universal joints\u003c\/li\u003e\n\u003cli\u003eVibration from a damaged or out-of-balance driveshaft\u003c\/li\u003e\n\u003cli\u003eDifficulty servicing permanently staked factory U-joints\u003c\/li\u003e\n\u003cli\u003eDriveline clunk during acceleration or deceleration\u003c\/li\u003e\n\u003cli\u003eRear shaft replacement needs on 1986-1987 Nissan D21 trucks\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eVerify rear driveline length, shaft diameter, and vehicle configuration before installation. Confirm fitment for 1986-1987 Nissan D21, rear, and inspect companion flanges, U-joint caps, and related driveline components during service. Because this shaft is not adjustable, correct application matching is important before installation.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eDorman OE FIX parts are engineered to address known service limitations in original equipment designs by improving serviceability while maintaining application-specific fitment. Part number 946-221 is built for direct replacement use on the listed Nissan D21 rear drive shaft applications.\u003c\/p\u003e","brand":"Dorman","offers":[{"title":"Default Title","offer_id":52798250254517,"sku":"BKKY-946-221","price":624.41,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/RB_946221_Ang.jpg?v=1784007260","url":"https:\/\/www.partcatalog.com\/products\/dorman-946-221-drive-shaft-rear","provider":"PartCatalog","version":"1.0","type":"link"}