{"product_id":"dorman-946-645-drive-shaft-rear","title":"Dorman 946-645 Drive Shaft - Rear","description":"\u003ch2\u003eRear Driveshaft for Ford F-350 Super Duty\u003c\/h2\u003e\u003cp\u003eThis Dorman drive shaft assembly is built for rear driveline replacement on select Ford F-350 Super Duty DRW trucks. Part number 946-645 is a complete steel driveshaft with a pre-balanced design and serviceable construction for direct replacement work.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eSteel shaft construction for strength and durability\u003c\/li\u003e\n\u003cli\u003ePre-balanced assembly for smoother operation after installation\u003c\/li\u003e\n\u003cli\u003e100% new yokes, tubes, constant velocity joints, and universal joints per manufacturer description\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 for application-specific fitment\u003c\/li\u003e\n\u003cli\u003eDrive shaft length: 106.85 in\u003c\/li\u003e\n\u003cli\u003eShaft diameter: 3.5 in\u003c\/li\u003e\n\u003cli\u003eWall thickness: 0.083 in\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Description\u003c\/h2\u003e\u003cp\u003eDorman 946-645 is a rear drive shaft assembly for 2002 Ford F-350 Super Duty and 2003-2004 Ford F-350 Super Duty models with dual rear wheels (DRW). It is engineered as a complete replacement driveline component with steel tubing, a slip yoke, and a greaseable design to support serviceability. The assembly is pre-balanced and built to replace worn or damaged rear driveshaft components without rebuilding the original shaft.\u003c\/p\u003e\u003cp\u003eThis part cross-references Ford OE number 2C3Z4R602BT for the same application. If you are searching for a rear driveshaft for 2003 Ford F-350 Super Duty DRW or a 2004 Ford F-350 Super Duty rear driveshaft, part number 946-645 matches the listed fitment.\u003c\/p\u003e\u003ch2\u003eWhat It Helps Fix\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 damaged joints or yokes\u003c\/li\u003e\n\u003cli\u003eExcess play caused by worn shaft components\u003c\/li\u003e\n\u003cli\u003eService issues related to a non-greaseable or worn driveline assembly\u003c\/li\u003e\n\u003cli\u003eReplacement needs after driveline tube or joint damage\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eVerify rear axle configuration and wheel setup before ordering; this application is for DRW trucks only. Confirm driveshaft length, slip yoke engagement, and overall driveline measurements against the original part before installation. Inspect companion flange, U-joint interfaces, and related driveline hardware for wear during replacement. Professional installation is recommended for proper driveline alignment and balance.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eDorman supplies this replacement driveshaft as a complete assembly with new core driveline components and pre-balanced construction. Part number 946-645 is built to OE-style specifications for the listed Ford F-350 Super Duty rear applications.\u003c\/p\u003e","brand":"Dorman","offers":[{"title":"Default Title","offer_id":52798262575285,"sku":"BKKY-946-645","price":1227.6,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/RB_946645_Fro.jpg?v=1784009041","url":"https:\/\/www.partcatalog.com\/products\/dorman-946-645-drive-shaft-rear","provider":"PartCatalog","version":"1.0","type":"link"}