{"product_id":"inmotion-ws1173-differential-pinion-seal-front-outer-or-rear-outer","title":"InMotion WS1173 Differential Pinion Seal - Front Outer or Rear Outer","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\u003cp\u003eThe InMotion WS1173 differential pinion seal is built for rear outer and front outer applications that require a precise sealing surface. It helps keep contaminants out of the differential pinion area while reducing the risk of fluid leaks.\u003c\/p\u003e\u003cp\u003eCompatible With Subaru Impreza, Subaru WRX, Subaru WRX STI, Subaru Forester, and multiple Nissan applications, this seal is a fitment-based replacement for a wide range of driveline service needs. The WS1173 part number is also useful when matching the correct seal for Subaru R160, Subaru R180, and Nissan R180 differential setups.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePolyacrylate construction for sealing durability.\u003c\/li\u003e\n\u003cli\u003ePrecision dimensions for a secure fit at the housing bore and shaft interface.\u003c\/li\u003e\n\u003cli\u003eDesigned to help block moisture and debris from sensitive differential components.\u003c\/li\u003e\n\u003cli\u003eSupports leak control in differential pinion service.\u003c\/li\u003e\n\u003cli\u003eFits rear outer and front outer applications listed in the vehicle coverage.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Description\u003c\/h2\u003e\u003cp\u003eThe WS1173 is a differential pinion seal engineered for accurate sealing performance in driveline service. Its polyacrylate material and measured dimensions help it seat properly in the differential housing while maintaining contact at the shaft diameter. For Subaru Impreza, Subaru Forester, and Subaru WRX applications, as well as selected Nissan models, this seal addresses the sealing point that protects the pinion area from contamination and fluid loss.\u003c\/p\u003e\u003cp\u003eUse WS1173 when servicing a differential that needs a replacement seal matched to the listed fitment and differential type. This part cross-references Monroe Shocks \u0026amp; Struts (e.g., 172286, 182286) for the same application.\u003c\/p\u003e\u003ch2\u003eWhat It Helps Fix\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eDifferential fluid seepage at the pinion seal area.\u003c\/li\u003e\n\u003cli\u003eContamination entering the differential through a worn seal.\u003c\/li\u003e\n\u003cli\u003eSeal wear that can affect driveline lubrication retention.\u003c\/li\u003e\n\u003cli\u003eService issues on Subaru and Nissan differential assemblies with the listed fitment.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\u003cp\u003eVerify the differential type and the inside diameter requirement before installation. This seal is listed for rear outer and front outer positions only where the fitment notes match the vehicle and differential configuration. Confirm the housing bore and shaft diameter against the removed part to ensure proper seating.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eInMotion manufactures this seal with precision-focused construction and high-quality materials for differential service applications. The WS1173 part number identifies the correct seal for the listed coverage and helps simplify replacement matching.\u003c\/p\u003e","brand":"InMotion","offers":[{"title":"Default Title","offer_id":53706645143733,"sku":"HKKS-WS1173","price":14.11,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/WJ_WS1173_FRO.jpg?v=1793951485","url":"https:\/\/www.partcatalog.com\/products\/inmotion-ws1173-differential-pinion-seal-front-outer-or-rear-outer","provider":"PartCatalog","version":"1.0","type":"link"}