{"product_id":"national-3051n-engine-crankshaft-seal-front-or-upper","title":"National 3051N Engine Crankshaft Seal - Front or Upper","description":"\u003ch2\u003eOverview of National 3051N Engine Crankshaft Seal\u003c\/h2\u003e\u003cp\u003eThe National 3051N engine crankshaft seal is designed to provide reliable sealing performance for various vehicle models including Mazda, Mercury, Saab, Subaru, and Volkswagen. Engineered with precision, this oil seal helps maintain engine integrity by preventing oil leaks around the crankshaft.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eInside diameter: 1.654 inches (42.000 mm)\u003c\/li\u003e\n\u003cli\u003eOutside diameter: 2.170 inches (55.120 mm)\u003c\/li\u003e\n\u003cli\u003eThickness: 0.315 inches (8.000 mm)\u003c\/li\u003e\n\u003cli\u003eSealing material: Durable silicone\u003c\/li\u003e\n\u003cli\u003eClockwise-spiral lip design for enhanced sealing\u003c\/li\u003e\n\u003cli\u003eCompatible housing bore: 2.165 inches (55.000 mm)\u003c\/li\u003e\n\u003cli\u003ePart type: Engine crankshaft oil seal\u003c\/li\u003e\n\u003cli\u003eSeries: 3000\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Product Description\u003c\/h2\u003e\u003cp\u003eThe National 3051N crankshaft seal is constructed from high-quality silicone material, offering excellent resistance to heat, oil, and wear. Its clockwise-spiral lip design ensures a tight seal around the crankshaft, reducing the risk of oil leakage and contamination. With precise dimensions including a 1.654-inch inside diameter and a 2.170-inch outside diameter, this seal fits securely within the housing bore of 2.165 inches. The 0.315-inch thickness provides durability and long-lasting performance under demanding engine conditions.\u003c\/p\u003e\u003ch2\u003eCompatible Vehicles and Applications\u003c\/h2\u003e\u003cp\u003eThis engine crankshaft seal is compatible with a range of vehicles, including:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eMazda 9-2X\u003c\/li\u003e\n\u003cli\u003eMercury Mountaineer and B4000\u003c\/li\u003e\n\u003cli\u003eSaab 9-2X\u003c\/li\u003e\n\u003cli\u003eSubaru Baja, Forester, Impreza, Legacy, Outback, WRX STI\u003c\/li\u003e\n\u003cli\u003eVolkswagen Vanagon\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eIt is specifically designed to maintain engine oil containment and prevent leaks in these models, ensuring optimal engine performance.\u003c\/p\u003e\u003ch2\u003eCommon Issues Addressed by National 3051N Seal\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePrevents oil leaks around the crankshaft\u003c\/li\u003e\n\u003cli\u003eReduces engine contamination from external debris\u003c\/li\u003e\n\u003cli\u003eMinimizes wear on crankshaft and housing bore\u003c\/li\u003e\n\u003cli\u003eMaintains engine oil pressure and efficiency\u003c\/li\u003e\n\u003cli\u003eHelps avoid costly engine 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 3051N crankshaft seal, ensure the housing bore and crankshaft surfaces are clean and free of debris. Use appropriate tools to press the seal evenly into place without damaging the sealing lip. Verify the seal orientation matches the clockwise-spiral lip design for proper function. Follow vehicle-specific service manual instructions for torque specifications and installation procedures.\u003c\/p\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eManufactured by National, a trusted name in engine sealing systems, the 3051N crankshaft seal meets industry standards for durability and performance. The silicone material and design features contribute to a reliable seal under normal operating conditions. Warranty information is provided by the manufacturer and should be referenced for specific coverage details.\u003c\/p\u003e","brand":"National","offers":[{"title":"Default Title","offer_id":51903632834741,"sku":"BCZK-3051N","price":25.5,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/NS_3051N_Fro.jpg?v=1774734508","url":"https:\/\/www.partcatalog.com\/products\/national-3051n-engine-crankshaft-seal-front-or-upper","provider":"PartCatalog","version":"1.0","type":"link"}