{"product_id":"national-710521-engine-crankshaft-seal","title":"National 710521 Engine Crankshaft Seal - Front","description":"\u003ch2\u003eOverview of National 710521 Engine Crankshaft Seal\u003c\/h2\u003e\u003cp\u003eThe National 710521 engine crankshaft seal is designed to provide reliable sealing performance for select Chevrolet and Suzuki vehicles. Engineered with fluoro-elastomer material, this oil seal ensures durability and resistance to heat and chemicals, making it suitable for demanding engine environments.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eInside diameter: 1.772 inches (45.000 mm)\u003c\/li\u003e\n\u003cli\u003eOutside diameter: 2.488 inches (63.200 mm)\u003c\/li\u003e\n\u003cli\u003eThickness\/width: 0.295 inches (7.500 mm)\u003c\/li\u003e\n\u003cli\u003eHousing bore diameter: 2.480 inches (63.000 mm)\u003c\/li\u003e\n\u003cli\u003eMaterial: Fluoro-elastomer for enhanced durability\u003c\/li\u003e\n\u003cli\u003ePart number: 710521, Series 710500\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Product Description\u003c\/h2\u003e\u003cp\u003eThis National 710521 crankshaft seal is specifically designed to fit Chevrolet and Suzuki models including the Grand Vitara, Sidekick, SX4, SX4 Crossover, Tracker, Vitara, and XL-7. The seal features a 1.772 inch (45 mm) inside diameter to fit the crankshaft precisely, while the 2.488 inch (63.2 mm) outside diameter ensures a secure fit within the engine housing bore of 2.480 inches (63 mm). Constructed from fluoro-elastomer, the seal offers excellent resistance to oil, heat, and engine chemicals, maintaining a tight seal under various operating conditions. The 0.295 inch (7.5 mm) thickness provides the necessary robustness to prevent leaks and maintain engine integrity.\u003c\/p\u003e\u003ch2\u003eCommon Applications and Issues Addressed\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePrevents oil leaks around the crankshaft area\u003c\/li\u003e\n\u003cli\u003eMaintains engine oil pressure and cleanliness\u003c\/li\u003e\n\u003cli\u003eReduces risk of engine contamination from external debris\u003c\/li\u003e\n\u003cli\u003eHelps avoid premature wear of crankshaft bearings\u003c\/li\u003e\n\u003cli\u003eEnsures proper sealing in Chevrolet and Suzuki engine models\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eEnsure the crankshaft and housing bore are clean and free of debris before installation\u003c\/li\u003e\n\u003cli\u003eUse appropriate tools to avoid damaging the fluoro-elastomer seal during installation\u003c\/li\u003e\n\u003cli\u003eVerify the seal orientation matches the engine manufacturer’s specifications\u003c\/li\u003e\n\u003cli\u003eCheck for proper seating to prevent leaks and ensure long-term performance\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eNational engine crankshaft seals, including part number 710521, are manufactured to meet strict quality standards for durability and fitment. The fluoro-elastomer material is selected for its resistance to heat and chemical degradation, contributing to reliable engine performance. While specific warranty details may vary, National products typically come with a limited warranty against manufacturing defects to provide confidence in your purchase.\u003c\/p\u003e","brand":"National","offers":[{"title":"Default Title","offer_id":43448350474421,"sku":"BCZK-710521","price":24.76,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/NS_710521_Fro.jpg?v=1774734757","url":"https:\/\/www.partcatalog.com\/products\/national-710521-engine-crankshaft-seal","provider":"PartCatalog","version":"1.0","type":"link"}