{"product_id":"dorman-946-406-drive-shaft-rear","title":"Dorman 946-406 Drive Shaft - Rear","description":"\u003ch2\u003eRear Driveshaft for Ford Super Duty\u003c\/h2\u003e\u003cp\u003eThis Dorman rear driveshaft is a direct replacement for select Ford Super Duty trucks with a rear driveline application. Part number 946-406 is built as a complete assembly with new yokes, tubes, CV joints, and universal joints, and it arrives pre-balanced for installation.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eComplete rear driveshaft assembly for service replacement\u003c\/li\u003e\n\u003cli\u003ePre-balanced for smoother driveline operation\u003c\/li\u003e\n\u003cli\u003e100% new yokes, tubes, constant velocity joints, and universal joints\u003c\/li\u003e\n\u003cli\u003eSteel shaft construction with a 3.5 in diameter\u003c\/li\u003e\n\u003cli\u003e90.34 in overall length with adjustable overall length\u003c\/li\u003e\n\u003cli\u003eGreaseable design for serviceability\u003c\/li\u003e\n\u003cli\u003eRegular grade replacement part\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Description\u003c\/h2\u003e\u003cp\u003eDorman 946-406 is a steel rear drive shaft assembly engineered for 1999-2000 Ford F-250 Super Duty and 1999-2000 Ford F-350 Super Duty applications. It is a practical replacement for worn or damaged driveline components when the original shaft is no longer serviceable. The assembly uses a 3.5-inch shaft diameter, 0.083-inch wall thickness, and an adjustable overall length to match the specified rear driveline setup. This part cross-references Ford OE numbers such as F81Z4R602DH and F81Z4R602DX 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 rear driveshaft\u003c\/li\u003e\n\u003cli\u003eClunking or driveline noise from worn U-joints or CV joints\u003c\/li\u003e\n\u003cli\u003eService issues caused by damaged yokes or shaft tubing\u003c\/li\u003e\n\u003cli\u003eLoss of smooth power transfer to the rear axle\u003c\/li\u003e\n\u003cli\u003eReplacement needs after corrosion, impact damage, or excessive wear\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eFits 1999-2000 Ford F-250 Super Duty, rear. Fits 1999-2000 Ford F-350 Super Duty, rear, for vehicles with Single Rear Wheel (SRW). Verify driveline length, flange style, and rear axle configuration before installation. Inspect related mounts and driveline components during replacement to confirm the source of vibration or noise. Part number 946-406 is supplied as a rear driveshaft assembly and is ready for installation once vehicle-specific measurements are confirmed.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eDorman supplies this replacement driveshaft as a complete assembly with new service parts and pre-balanced construction to support consistent driveline performance. Part number 946-406 is built for direct replacement use on the listed Ford Super Duty applications.\u003c\/p\u003e","brand":"Dorman","offers":[{"title":"Default Title","offer_id":52798255431861,"sku":"BKKY-946-406","price":813.01,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/RB_946406_FRO.jpg?v=1784008162","url":"https:\/\/www.partcatalog.com\/products\/dorman-946-406-drive-shaft-rear","provider":"PartCatalog","version":"1.0","type":"link"}