{"product_id":"inmotion-ws2081-wheel-seal-rear-inner","title":"InMotion WS2081 Wheel Seal - Rear Inner","description":"\u003ch2\u003eRear Inner Differential Pinion Seal for Heavy-Duty GM Axles\u003c\/h2\u003e\u003cp\u003eThe InMotion WS2081 is a rear inner differential pinion seal built for select Chevrolet and GMC trucks, vans, and SUVs with 10.5-inch ring gear applications and related Spicer axle configurations. It uses nitrile sealing material, a SAE 1008 spring, and a SAE 1070 seal case to help maintain a tight seal around the pinion area.\u003c\/p\u003e\u003cp\u003eFor Chevrolet C2500, GMC K3500, and other rear inner applications, this seal is sized for a precise housing and shaft fit. InMotion WS2081 is a direct replacement option for servicing leaks at the differential pinion seal location.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eNitrile sealing material for oil resistance and dependable sealing performance\u003c\/li\u003e\n\u003cli\u003eSAE 1008 spring material for consistent sealing tension\u003c\/li\u003e\n\u003cli\u003eSAE 1070 seal case material for structural support\u003c\/li\u003e\n\u003cli\u003eInside diameter: 2.82 in. \/ 71.7 mm\u003c\/li\u003e\n\u003cli\u003eOutside diameter: 3.95 in. \/ 100.2 mm\u003c\/li\u003e\n\u003cli\u003eWidth: 0.495 in. \/ 12.6 mm\u003c\/li\u003e\n\u003cli\u003eShaft diameter: 2.843 in. \/ 72.2 mm\u003c\/li\u003e\n\u003cli\u003eHousing bore: 3.939 in. \/ 100.1 mm\u003c\/li\u003e\n\u003cli\u003eExternal markings: 12003\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Description\u003c\/h2\u003e\u003cp\u003eBuilt for rear inner differential service, InMotion WS2081 is engineered to create a secure barrier against debris and moisture at the pinion seal location. The nitrile sealing lip is paired with a spring-loaded design to maintain contact pressure, while the metal case helps the seal retain its shape during operation. This makes it a practical choice for maintaining differential integrity in trucks and vans that see towing, hauling, or daily driving.\u003c\/p\u003e\u003cp\u003eThis part cross-references common OE-style applications for the same service position. Compatible vehicle coverage includes Chevrolet C2500, K2500, C3500, Express 2500, Express 3500, Silverado 2500, and GMC C2500, K2500, K3500, Savana 2500, Savana 3500, Sierra 2500, and Yukon XL 2500 in rear inner positions where the listed axle notes apply. Part number WS2081 is also a useful reference when sourcing a rear inner differential pinion seal for 10.5-inch ring gear and select Spicer axle setups.\u003c\/p\u003e\u003ch2\u003eWhat It Helps Address\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eDifferential fluid seepage at the pinion seal area\u003c\/li\u003e\n\u003cli\u003eContamination from road debris and moisture entering the axle housing\u003c\/li\u003e\n\u003cli\u003eSeal wear from age, heat, and drivetrain use\u003c\/li\u003e\n\u003cli\u003eLoss of sealing tension around the pinion shaft\u003c\/li\u003e\n\u003cli\u003eService needs on rear inner axle seal replacement jobs\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eVerify axle type, ring gear size, and housing bore before installation. This seal is listed for rear inner positions only, with many applications requiring a 10.5-inch ring gear or specific Spicer axle notes. Inspect the pinion yoke and sealing surface for wear or scoring before installing WS2081, and confirm the shaft diameter and housing bore match the published dimensions.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eInMotion WS2081 is manufactured with nitrile, SAE 1008 spring material, and a SAE 1070 seal case to support consistent sealing performance in differential service. The part is specified with published dimensions and fitment data for accurate application matching on Chevrolet and GMC rear inner axle positions.\u003c\/p\u003e","brand":"InMotion","offers":[{"title":"Default Title","offer_id":52406877421749,"sku":"HKKS-WS2081","price":8.31,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/WJ_WS2081_Fro.jpg?v=1777773357","url":"https:\/\/www.partcatalog.com\/products\/inmotion-ws2081-wheel-seal-rear-inner","provider":"PartCatalog","version":"1.0","type":"link"}