{"product_id":"national-225020-engine-crankshaft-seal","title":"National 225020 Engine Crankshaft Seal - Front","description":"\u003ch2\u003eOverview of National 225020 Engine Crankshaft Seal\u003c\/h2\u003e\u003cp\u003eThe National 225020 engine crankshaft seal is designed for reliable sealing performance in select Chevrolet, GMC, and Isuzu vehicles. Engineered with a fluoro-elastomer material and a clockwise-spiral lip design, this oil seal helps maintain engine integrity by preventing oil leaks around the crankshaft.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eInside diameter: 1.969 inches (50.000 mm)\u003c\/li\u003e\n\u003cli\u003eOutside diameter: 2.688 inches (68.280 mm)\u003c\/li\u003e\n\u003cli\u003eThickness\/width: 0.354 inches (9.000 mm)\u003c\/li\u003e\n\u003cli\u003eHelix type: Clockwise-spiral lip design for effective sealing\u003c\/li\u003e\n\u003cli\u003eMaterial: Durable fluoro-elastomer resistant to heat and chemicals\u003c\/li\u003e\n\u003cli\u003eHousing bore size: 2.677 inches (68.000 mm)\u003c\/li\u003e\n\u003cli\u003ePart number: 225020, Series 220000\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Details and Specifications\u003c\/h2\u003e\u003cp\u003eThis National crankshaft seal (part number 225020) features a 32-type design optimized for sealing the crankshaft in engines of Chevrolet, GMC, and Isuzu models such as the I-Mark, Impulse, LUV, Pickup, S10, S10 Blazer, S15, S15 Jimmy, and Trooper. The fluoro-elastomer material offers excellent resistance to high temperatures and engine fluids, ensuring long-lasting performance. The clockwise-spiral lip design enhances sealing efficiency by directing oil back into the engine, reducing leakage and contamination risks.\u003c\/p\u003e\u003ch2\u003eCompatible Vehicles and Applications\u003c\/h2\u003e\u003cp\u003eCompatible with various Chevrolet, GMC, and Isuzu models, this crankshaft seal is specifically suited for:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eChevrolet S10 and S10 Blazer\u003c\/li\u003e\n\u003cli\u003eGMC S15 and S15 Jimmy\u003c\/li\u003e\n\u003cli\u003eIsuzu I-Mark, Impulse, LUV, Pickup, and Trooper\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eUsing the correct seal like the National 225020 helps maintain engine oil integrity and prevents common issues related to crankshaft oil leaks.\u003c\/p\u003e\u003ch2\u003eCommon Issues Addressed by the National 225020 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\u003eMaintains proper oil pressure and lubrication\u003c\/li\u003e\n\u003cli\u003eMinimizes premature wear of engine components\u003c\/li\u003e\n\u003cli\u003eHelps avoid costly engine repairs due to oil loss\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eEnsure the housing bore is clean and free of debris before installation\u003c\/li\u003e\n\u003cli\u003eVerify the seal dimensions match the crankshaft and housing bore (1.969 inch shaft, 2.677 inch housing bore)\u003c\/li\u003e\n\u003cli\u003eUse proper tools to avoid damaging the seal during installation\u003c\/li\u003e\n\u003cli\u003eApply a light coat of engine oil on the seal lip before fitting\u003c\/li\u003e\n\u003cli\u003eCheck for proper seating and alignment to prevent leaks\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eNational's 225020 crankshaft seal is manufactured to meet industry standards for durability and performance. Constructed from high-quality fluoro-elastomer material, it offers resistance to heat, oil, and chemicals commonly found in engine environments. While specific warranty details may vary, National products typically come with a limited warranty against manufacturing defects to ensure customer confidence in product reliability.\u003c\/p\u003e","brand":"National","offers":[{"title":"Default Title","offer_id":43448291426485,"sku":"BCZK-225020","price":18.68,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/NS_225020_Fro.jpg?v=1774734624","url":"https:\/\/www.partcatalog.com\/products\/national-225020-engine-crankshaft-seal","provider":"PartCatalog","version":"1.0","type":"link"}