{"product_id":"dorman-946-921-drive-shaft-rear","title":"Dorman 946-921 Drive Shaft - Rear","description":"\u003ch2\u003eRear Driveshaft for Ford Super Duty\u003c\/h2\u003e\u003cp\u003eThis Dorman drive shaft assembly is built for rear applications on select Ford Super Duty trucks. Part number 946-921 is a direct-fit driveline replacement for 1999-2001 Ford F-250 Super Duty and Ford F-350 Super Duty models, including 2001 Ford F-350 Super Duty with dual rear wheels.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eSteel shaft construction for driveline service\u003c\/li\u003e\n\u003cli\u003ePre-balanced assembly for installation readiness\u003c\/li\u003e\n\u003cli\u003e100% new yokes, tubes, and universal joints\u003c\/li\u003e\n\u003cli\u003eSlip yoke included\u003c\/li\u003e\n\u003cli\u003eGreaseable drive shaft design\u003c\/li\u003e\n\u003cli\u003eOverall length adjustable\u003c\/li\u003e\n\u003cli\u003e55.91 in drive shaft length\u003c\/li\u003e\n\u003cli\u003e3.5 in shaft diameter with 0.083 in wall thickness\u003c\/li\u003e\n\u003cli\u003eRear position fitment for select Ford Super Duty trucks\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Description\u003c\/h2\u003e\u003cp\u003eDorman 946-921 is a complete rear drive shaft assembly for Ford F-250 Super Duty and Ford F-350 Super Duty trucks from 1999-2001. It is built with a steel shaft and arrives pre-balanced to reduce the need for additional driveline setup before installation. The assembly uses all-new yokes, tubes, and universal joints, and it includes a slip yoke for the specified application. This part cross-references Ford OE and aftermarket numbers such as F81Z4602DH and FDP-109 for the same application.\u003c\/p\u003e\u003cp\u003eFits 1999-2000 Ford F-250 Super Duty, rear. Fits 1999-2000 Ford F-350 Super Duty, rear. Fits 2001 Ford F-250 Super Duty, rear, ID F81A4602DH. Fits 2001 Ford F-350 Super Duty, rear, w\/Dual Rear Wheels (DRW). Use part number 946-921 when searching for a rear driveshaft replacement for Ford Super Duty driveline service.\u003c\/p\u003e\u003ch2\u003eCommon Problems This Part Can Address\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eVibration from a worn or out-of-balance rear driveshaft\u003c\/li\u003e\n\u003cli\u003eClunking or driveline noise from worn joints or yokes\u003c\/li\u003e\n\u003cli\u003eExcess play in the shaft assembly\u003c\/li\u003e\n\u003cli\u003eCorrosion or fatigue in the original steel shaft\u003c\/li\u003e\n\u003cli\u003eFitment issues after driveline wear on Ford F-250 Super Duty and Ford F-350 Super Duty trucks\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eVerify rear axle and vehicle configuration before installation, especially on 2001 Ford F-350 Super Duty DRW applications. Confirm overall length, shaft diameter, and slip yoke engagement against the original driveline assembly. Inspect related driveline components, mounting points, and seals during replacement to help ensure proper operation after installation.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eDorman manufactures replacement driveline components for service applications, and this assembly is supplied pre-balanced with new core driveline parts for the listed Ford Super Duty fitments. Part number 946-921 is built for rear driveline replacement on the confirmed applications above.\u003c\/p\u003e","brand":"Dorman","offers":[{"title":"Default Title","offer_id":52798268244149,"sku":"BKKY-946-921","price":528.07,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/RB_946921_Fro.jpg?v=1784009964","url":"https:\/\/www.partcatalog.com\/products\/dorman-946-921-drive-shaft-rear","provider":"PartCatalog","version":"1.0","type":"link"}