{"product_id":"inmotion-ws6930-differential-pinion-seal-rear","title":"InMotion WS6930 Differential Pinion Seal - Rear","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\u003cp\u003eThe InMotion WS6930 differential pinion seal is built for rear differential service where a precise seal is needed to keep contaminants out and fluid in. It fits a wide range of 1957-1958 Ford and Mercury applications, including classic Ford F-100 and Thunderbird models.\u003c\/p\u003e\u003cp\u003eUse WS6930 when you need a replacement seal for rear differential pinion service on vintage Ford and Mercury driveline applications. The leather sealing material and matched dimensions support a secure fit at the pinion area.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eLeather sealing material for differential pinion service\u003c\/li\u003e\n\u003cli\u003eOutside diameter of 4.128 inches for listed applications\u003c\/li\u003e\n\u003cli\u003eInside diameter and shaft diameter of 1.812 inches\u003c\/li\u003e\n\u003cli\u003eHousing bore of 4.123 inches for dimensional match\u003c\/li\u003e\n\u003cli\u003eFits rear differential applications on 1957-1958 Ford and Mercury vehicles\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Description\u003c\/h2\u003e\u003cp\u003eWS6930 is a differential pinion seal engineered to create a tight barrier at the pinion opening, helping protect internal differential components from moisture and debris while reducing the chance of fluid leakage. Its leather construction and specified dimensions make it a fitment-focused replacement for classic rear axle service. This part cross-references Monroe Shocks \u0026amp; Struts (e.g., 172286, 182286) for the same application. For buyers servicing Ford and Mercury driveline components, WS6930 provides a direct replacement option for the listed rear applications.\u003c\/p\u003e\u003ch2\u003eCommon Uses\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eStops gear oil seepage at the differential pinion area\u003c\/li\u003e\n\u003cli\u003eHelps keep dirt and moisture out of the differential housing\u003c\/li\u003e\n\u003cli\u003eAddresses worn or hardened pinion seal material\u003c\/li\u003e\n\u003cli\u003eSupports service on rear axle assemblies with the listed dimensions\u003c\/li\u003e\n\u003cli\u003eRestores sealing performance on classic Ford and Mercury driveline systems\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\u003cp\u003eConfirm the housing bore, shaft diameter, and outside diameter before installation. This seal is listed for rear applications only, and fitment notes vary by vehicle and ring gear specification. Match the part to the exact vehicle and axle configuration shown in the fitment data.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eInMotion manufactures this seal with precision-focused construction and quality materials for differential service. WS6930 is specified for the listed applications and dimensions to support accurate replacement selection.\u003c\/p\u003e","brand":"InMotion","offers":[{"title":"Default Title","offer_id":53519223554229,"sku":"HKKS-WS6930","price":14.34,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/WJ_WS6930_Generic.jpg?v=1791961479","url":"https:\/\/www.partcatalog.com\/products\/inmotion-ws6930-differential-pinion-seal-rear","provider":"PartCatalog","version":"1.0","type":"link"}