{"product_id":"national-8622-differential-pinion-seal-front-outer","title":"National 8622 Differential Pinion Seal - Front Outer","description":"\u003ch2\u003eNational 8622 Differential Pinion Seal\u003c\/h2\u003e\u003cp\u003eThe National 8622 differential pinion seal is an OE-style oil seal for the front outer position on select Chevrolet and GMC 4x4 applications. Built with nitrile sealing material and Redicoat protection, it is sized for the shaft, housing bore, and flange dimensions needed for a precise driveline seal.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePart number: 8622\u003c\/li\u003e\n\u003cli\u003ePart type: differential pinion seal \/ oil seal\u003c\/li\u003e\n\u003cli\u003eMaterial: nitrile\u003c\/li\u003e\n\u003cli\u003eRedicoat: yes\u003c\/li\u003e\n\u003cli\u003eSeries: 8000\u003c\/li\u003e\n\u003cli\u003eType: 88\u003c\/li\u003e\n\u003cli\u003eInside diameter: 1.940 in. \/ 49.280 mm\u003c\/li\u003e\n\u003cli\u003eOutside diameter: 2.817 in. \/ 71.550 mm\u003c\/li\u003e\n\u003cli\u003eFlanged outside diameter: 3.070 in. \/ 77.978 mm\u003c\/li\u003e\n\u003cli\u003eHousing bore: 2.813 in. \/ 71.450 mm\u003c\/li\u003e\n\u003cli\u003eThickness \/ width: 0.428 in. \/ 10.870 mm\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eProduct Details\u003c\/h2\u003e\u003cp\u003eNational has supplied sealing solutions for more than 75 years, and the 8622 pinion seal reflects that focus on dimensional accuracy and drivetrain sealing performance. This seal is specified for front outer applications on 1977-1991 Chevrolet Blazer, 1977-1991 GMC Jimmy, 1977-1986 Chevrolet K10, 1977-1986 Chevrolet K20, 1977-1986 Chevrolet K5 Blazer, 1979-1986 GMC K1500, 1979-1986 GMC K2500, 1987-1991 Chevrolet V1500 Suburban, 1989-1991 Chevrolet V2500 Suburban, and related GMC V-series and K-series trucks with the listed axle and transmission notes. The National 8622 is also cross-referenced to Davico Mfg 19277 for the same application.\u003c\/p\u003e\u003ch2\u003eCommon Uses\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eStops gear oil leakage at the differential pinion area\u003c\/li\u003e\n\u003cli\u003eAddresses wetness around the front outer axle seal location\u003c\/li\u003e\n\u003cli\u003eHelps correct seepage caused by worn or hardened seal material\u003c\/li\u003e\n\u003cli\u003eSupports repair of driveline fluid loss on older Chevrolet and GMC 4x4 vehicles\u003c\/li\u003e\n\u003cli\u003eRestores sealing at the pinion shaft interface after service work\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\u003cp\u003eVerify shaft diameter, housing bore, and seal orientation before installation. Clean the bore and sealing surface thoroughly, and inspect the pinion yoke or shaft for wear, grooves, or corrosion that could affect sealing. Confirm vehicle configuration, including the 8.5-inch ring gear, GMC axle, and manual transmission input shaft bearing notes listed in the fitment data for Chevrolet Blazer, GMC Jimmy, and other covered models.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eNational is known for premium sealing products and long-term industry experience in automotive sealing systems. The 8622 is built as a nitrile oil seal with Redicoat protection for dependable fit and sealing consistency in the specified applications.\u003c\/p\u003e","brand":"National","offers":[{"title":"Default Title","offer_id":51869013967029,"sku":"BCZK-8622","price":29.09,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/NS_8622_Fro.jpg?v=1774734555","url":"https:\/\/www.partcatalog.com\/products\/national-8622-differential-pinion-seal-front-outer","provider":"PartCatalog","version":"1.0","type":"link"}