{"product_id":"national-710399-engine-crankshaft-seal","title":"National 710399 Engine Crankshaft Seal - Front","description":"\u003ch2\u003eReliable Engine Crankshaft Seal for Buick, Chevrolet, and Pontiac\u003c\/h2\u003e\u003cp\u003eThe National 710399 engine crankshaft seal is designed to provide a durable and precise fit for select Buick, Chevrolet, and Pontiac models. Engineered with fluoro-elastomer material and a clockwise-spiral lip design, this oil seal ensures effective sealing and long-lasting performance.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eInside diameter: 1.024 inches (26.000 mm)\u003c\/li\u003e\n\u003cli\u003eOutside diameter: 1.662 inches (42.200 mm)\u003c\/li\u003e\n\u003cli\u003eThickness\/width: 0.315 inches (8.000 mm)\u003c\/li\u003e\n\u003cli\u003eHelix type: Clockwise-spiral lip design for enhanced sealing\u003c\/li\u003e\n\u003cli\u003eMaterial: High-quality fluoro-elastomer for heat and chemical resistance\u003c\/li\u003e\n\u003cli\u003eHousing bore size: 1.654 inches (42.000 mm)\u003c\/li\u003e\n\u003cli\u003ePart number: 710399, part of the National 710300 series\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Details and Material Specifications\u003c\/h2\u003e\u003cp\u003eThis National engine crankshaft seal (part number 710399) is constructed from fluoro-elastomer, a material known for its resistance to heat, oil, and chemicals commonly found in engine environments. The seal features a clockwise-spiral lip design that helps maintain a tight seal around the crankshaft, preventing oil leaks and contamination. With an inside diameter of 1.024 inches and an outside diameter of 1.662 inches, it fits precisely within the housing bore of 1.654 inches, ensuring optimal sealing performance. The 0.315-inch thickness provides durability without compromising flexibility.\u003c\/p\u003e\u003ch2\u003eCompatible Vehicles and Applications\u003c\/h2\u003e\u003cp\u003eThis crankshaft seal is compatible with various Buick, Chevrolet, and Pontiac models, including the Aveo, Aveo5, Cascada, G3, LeMans, Optima, Wave, and Wave5. It is specifically designed to replace worn or damaged seals in these vehicles, maintaining engine integrity and preventing oil leaks.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003ePrevents oil leaks from the crankshaft area\u003c\/li\u003e\n\u003cli\u003eProtects engine components from dirt and contaminants\u003c\/li\u003e\n\u003cli\u003eMaintains proper oil pressure and engine performance\u003c\/li\u003e\n\u003cli\u003eReduces risk of engine damage due to seal failure\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eWhen installing the National 710399 crankshaft seal, ensure the housing bore and shaft are clean and free of debris. Use appropriate tools to press the seal evenly into place without damaging the lip or material. Verify the seal orientation matches the clockwise-spiral lip design for correct installation. It is recommended to inspect the crankshaft surface for wear or damage before installation to ensure a proper seal.\u003c\/p\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eNational's 710399 crankshaft seal is manufactured to meet industry standards for durability and performance. The fluoro-elastomer material and precise dimensions contribute to reliable sealing under typical engine operating conditions. This part is backed by National's quality assurance processes, providing confidence in its fit and function for compatible Buick, Chevrolet, and Pontiac models.\u003c\/p\u003e","brand":"National","offers":[{"title":"Default Title","offer_id":43448342872245,"sku":"BCZK-710399","price":15.48,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/NS_710399_Fro.jpg?v=1774734742","url":"https:\/\/www.partcatalog.com\/products\/national-710399-engine-crankshaft-seal","provider":"PartCatalog","version":"1.0","type":"link"}