{"product_id":"inmotion-ws9864s-wheel-seal-rear-or-rear-inner","title":"InMotion WS9864S Wheel Seal - Rear or Rear Inner","description":"\u003ch2\u003eRear Inner Differential Pinion Seal for Ford\u003c\/h2\u003e\u003cp\u003eThe InMotion WS9864S is a precision-engineered differential pinion seal built to keep contaminants out and lubricant in. With a nitrile sealing element and durable steel case and spring materials, it is made for rear inner applications on a wide range of Ford E-Series vans and Ford F-Series trucks.\u003c\/p\u003e\u003cp\u003eUse this seal when servicing a Ford E-250 Econoline, Ford E-350 Super Duty, or Ford F-350 rear axle and you need a reliable barrier at the pinion area. The WS9864S is sized for the specified shaft and housing dimensions to help maintain a tight seal at the differential.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePart number WS9864S differential pinion seal\u003c\/li\u003e\n\u003cli\u003eNitrile sealing material for dependable fluid control\u003c\/li\u003e\n\u003cli\u003eSpring material: SAE 1008\u003c\/li\u003e\n\u003cli\u003eSeal case material: SAE 1070\u003c\/li\u003e\n\u003cli\u003eInside diameter: 2.87 in. \/ 72.8 mm\u003c\/li\u003e\n\u003cli\u003eOutside diameter: 3.88 in. \/ 98.6 mm\u003c\/li\u003e\n\u003cli\u003eWidth: 0.515 in. \/ 13.1 mm\u003c\/li\u003e\n\u003cli\u003eShaft diameter: 2.875 in. \/ 73 mm\u003c\/li\u003e\n\u003cli\u003eHousing bore: 3.875 in. \/ 98.4 mm\u003c\/li\u003e\n\u003cli\u003eExternal markings: none\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Description\u003c\/h2\u003e\u003cp\u003eInMotion WS9864S is designed for rear inner differential pinion sealing where accurate dimensions matter. The nitrile construction helps form a secure seal against debris and moisture, while the steel spring and case materials add structural support for consistent sealing performance. This makes it a practical choice for Ford driveline service on vehicles such as the E-350 Super Duty, E-250 Econoline, and F-350.\u003c\/p\u003e\u003cp\u003eThis part cross-references Monroe Shocks \u0026amp; Struts (e.g., 172286, 182286) for the same application.\u003c\/p\u003e\u003ch2\u003eWhat It Helps Address\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eGear oil seepage at the differential pinion area\u003c\/li\u003e\n\u003cli\u003eContamination from road debris and moisture\u003c\/li\u003e\n\u003cli\u003eSeal wear from age, heat, and driveline use\u003c\/li\u003e\n\u003cli\u003eService issues on rear inner axle assemblies\u003c\/li\u003e\n\u003cli\u003eMaintenance needs on Ford E-Series and F-Series rear differentials\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eConfirm the shaft diameter, housing bore, and seal dimensions before installation.\u003c\/li\u003e\n\u003cli\u003eInspect the pinion yoke and sealing surface for wear or scoring.\u003c\/li\u003e\n\u003cli\u003eClean the bore and surrounding area thoroughly before pressing in the new seal.\u003c\/li\u003e\n\u003cli\u003eVerify axle configuration and notes for your vehicle, including DRW, SRW, full-floating, Spicer 61, or Spicer 70 applications where listed.\u003c\/li\u003e\n\u003cli\u003eFor fitment, this part fits 2021-2023 Ford E-350 Super Duty, rear; 2006-2019 Ford E-350 Super Duty, rear inner; 2003-2006 Ford E-250, rear inner; 2003-2005 Ford E-350 Club Wagon, rear inner; 1999-2005 Ford E-350 Super Duty, rear inner; 1989-2002 Ford E-250 Econoline, rear inner; 1992-2002 Ford E-350 Econoline Club Wagon, rear inner; 1992-1998 Ford E-350 Econoline, rear inner; 1989-1991 Ford E-250 Econoline Club Wagon, rear inner; 1981-1991 Ford E-350 Econoline, rear inner; 1981-1991 Ford E-350 Econoline Club Wagon, rear inner; 1981-1988 Ford E-250 Econoline, rear inner, with Spicer 61 Axle; 1981-1988 Ford E-250 Econoline Club Wagon, rear inner, with Spicer 61 Axle; 1985 Ford F-250, rear inner, with Spicer 61 Axle; 1980-1982 Ford F-250, rear inner, with Spicer 61 Axle; 1984-1985 Ford F-350, rear inner, with Spicer 70 Axle; 1980-1981 Ford F-350, rear inner, with Spicer 70 Axle; 1983-1984 Ford F-250, rear inner, with Spicer 70 Axle; 1982-1983 Ford F-350, rear inner, with Spicer 61 Axle; 1980 Ford E-250 Econoline, rear inner; 1980 Ford E-250 Econoline Club Wagon, rear inner; 1975-1980 Ford E-350 Econoline, rear inner, with Single Rear Wheels (SRW); 1977-1980 Ford E-350 Econoline Club Wagon, rear inner, with Single Rear Wheels (SRW); 1968-1979 Ford F-350, rear inner; and 1967 Ford F-350, rear inner, 3.88in outside diameter.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eBuilt by InMotion with precision sizing and durable sealing materials, WS9864S is intended for demanding driveline service where a stable differential seal is required. Its material selection and dimensional specifications support consistent fitment across the listed Ford rear inner applications.\u003c\/p\u003e","brand":"InMotion","offers":[{"title":"Default Title","offer_id":52406889218229,"sku":"HKKS-WS9864S","price":8.43,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/WJ_WS9864S_Fro.jpg?v=1777774956","url":"https:\/\/www.partcatalog.com\/products\/inmotion-ws9864s-wheel-seal-rear-or-rear-inner","provider":"PartCatalog","version":"1.0","type":"link"}