{"product_id":"national-5778v-differential-pinion-seal","title":"National 5778V Differential Pinion Seal - Front Outer or Rear Outer","description":"\u003ch2\u003eNational 5778V Differential Pinion Seal Overview\u003c\/h2\u003e\u003cp\u003eThe National 5778V differential pinion seal is engineered to provide reliable sealing performance for a range of vehicles including Chevrolet, Ford, Dodge, and Jeep models. Designed with precision dimensions and durable fluoro-elastomer material, this oil seal helps maintain proper lubrication and prevents leaks in driveline systems.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eInside diameter: 1.552 inches (39.420 mm)\u003c\/li\u003e\n\u003cli\u003eOutside diameter: 3.165 inches (80.390 mm)\u003c\/li\u003e\n\u003cli\u003eThickness\/width: 0.645 inches (16.383 mm)\u003c\/li\u003e\n\u003cli\u003eMaterial: Fluoro-elastomer for enhanced chemical and heat resistance\u003c\/li\u003e\n\u003cli\u003eCompatible with housing bore approximately 3.160 inches (80.260 mm)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Specifications and Design Details\u003c\/h2\u003e\u003cp\u003eThe 5778V differential pinion seal from National is part of the 5000 series and features a 72 type design optimized for differential pinion shafts. Its fluoro-elastomer construction offers resistance to oil, heat, and wear, ensuring long service life in demanding driveline environments. The seal’s precise inside diameter of 1.552 inches matches the shaft size for a secure fit, while the outside diameter of 3.165 inches fits tightly within the housing bore of 3.160 inches, preventing fluid leakage. The 0.645-inch thickness provides adequate sealing surface area without compromising installation space.\u003c\/p\u003e\u003ch2\u003eCompatible Vehicles and Applications\u003c\/h2\u003e\u003cp\u003eThis differential pinion seal is compatible with a wide range of vehicles, including Chevrolet Blazer, C10 Suburban, Corvette, and Silverado models; Ford Bronco, F-150, F-250, and F-350 trucks; Dodge Ram 1500 and 2500; Jeep Cherokee, Grand Cherokee, Wrangler, and TJ; as well as GMC, Honda, Isuzu, and Lincoln models. The 5778V seal is designed to maintain differential integrity by preventing oil leaks and contamination in these driveline systems.\u003c\/p\u003e\u003ch2\u003eCommon Issues Addressed by the 5778V Differential Pinion Seal\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePrevents oil leaks from the differential pinion shaft\u003c\/li\u003e\n\u003cli\u003eReduces contamination ingress into the differential housing\u003c\/li\u003e\n\u003cli\u003eMaintains proper lubrication for differential gears\u003c\/li\u003e\n\u003cli\u003eMinimizes wear on driveline components caused by fluid loss\u003c\/li\u003e\n\u003cli\u003eHelps avoid costly differential repairs due to seal failure\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eWhen installing the National 5778V differential pinion seal, ensure the housing bore is clean and free of debris. Use appropriate tools to press the seal evenly into place without damaging the sealing lip. Verify the shaft surface is smooth and free of nicks or grooves to prevent premature seal wear. Lubricate the seal lip lightly with gear oil before installation to reduce initial friction. Proper alignment and careful handling during installation will help achieve optimal sealing performance.\u003c\/p\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eNational manufactures the 5778V differential pinion seal to meet industry standards for durability and performance. The fluoro-elastomer material is selected for its resistance to heat, oil, and chemical exposure common in automotive driveline applications. While specific warranty terms may vary, National products typically come with a limited warranty against defects in material and workmanship, providing confidence in the seal’s reliability for compatible Chevrolet, Ford, Dodge, Jeep, and other vehicle models.\u003c\/p\u003e","brand":"National","offers":[{"title":"Default Title","offer_id":43448228118709,"sku":"BCZK-5778V","price":41.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/NS_5778V_Fro.jpg?v=1774734536","url":"https:\/\/www.partcatalog.com\/products\/national-5778v-differential-pinion-seal","provider":"PartCatalog","version":"1.0","type":"link"}