{"product_id":"dorman-946-578-drive-shaft-rear","title":"Dorman 946-578 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 applications on select Ford F-350 Super Duty trucks. Part number 946-578 is a complete steel driveshaft with a 3.5-inch shaft diameter, 93.35-inch length, slip yoke, greaseable design, and adjustable overall length for a direct replacement approach.\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, CV joints, and universal joints per manufacturer description\u003c\/li\u003e\n\u003cli\u003eSlip yoke included\u003c\/li\u003e\n\u003cli\u003eGreaseable driveshaft design\u003c\/li\u003e\n\u003cli\u003eOverall length adjustable\u003c\/li\u003e\n\u003cli\u003eDrive shaft length: 93.35 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 946-578 is a rear driveshaft assembly for 1999-2002 Ford F-350 Super Duty models with Single Rear Wheel (SRW) and Extended Chassis Cab configurations. It is engineered as a complete replacement driveline component for Ford F-350 Super Duty rear driveshaft service, with steel tube construction and a pre-balanced design to support smoother operation after replacement. This part cross-references Ford F81Z4R602AL for the same application.\u003c\/p\u003e\u003cp\u003eFor buyers searching for a 2002 Ford F-350 Super Duty rear driveshaft or a 1999-2001 Ford F-350 Super Duty rear driveshaft, part number 946-578 provides the key dimensions and hardware configuration needed for fitment-based replacement planning. The adjustable overall length and slip yoke help match the original driveline setup on the listed trucks.\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 worn shaft components\u003c\/li\u003e\n\u003cli\u003eService issues caused by damaged yokes or tubes\u003c\/li\u003e\n\u003cli\u003eGrease service concerns on a worn driveline assembly\u003c\/li\u003e\n\u003cli\u003eReplacement needs after shaft wear, corrosion, or mechanical damage\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eVerify rear fitment by year, cab configuration, and SRW application before installation. This driveshaft is listed for 2002 Ford F-350 Super Duty, rear, w\/Single Rear Wheel (SRW); Extended Chassis Cab; To 1\/06\/02, and for 1999-2001 Ford F-350 Super Duty, rear, w\/Single Rear Wheel (SRW); Extended Chassis Cab. Confirm driveline length and mounting points against the original shaft before final installation. The greaseable design supports routine service after installation.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eDorman positions this assembly as a complete replacement driveshaft with new yokes, tubes, CV joints, and universal joints, and it is pre-balanced before shipment. Part number 946-578 is built for the specified Ford F-350 Super Duty rear applications.\u003c\/p\u003e","brand":"Dorman","offers":[{"title":"Default Title","offer_id":52798259036341,"sku":"BKKY-946-578","price":1130.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/RB_946578_Fro.jpg?v=1784008665","url":"https:\/\/www.partcatalog.com\/products\/dorman-946-578-drive-shaft-rear","provider":"PartCatalog","version":"1.0","type":"link"}