{"product_id":"national-4370n-transfer-case-output-shaft-seal","title":"National 4370N Transfer Case Output Shaft Seal - Rear","description":"\u003ch2\u003eNational 4370N Transfer Case Output Shaft Seal Overview\u003c\/h2\u003e\u003cp\u003eThe National 4370N transfer case output shaft seal is engineered to provide reliable sealing performance for select Dodge and Jeep vehicles. Designed with precision dimensions and durable polyacrylate material, this oil seal helps maintain transfer case integrity and prevent fluid leaks.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eInside diameter: 1.503 inches (38.180 mm)\u003c\/li\u003e\n\u003cli\u003eOutside diameter: 2.383 inches (60.530 mm)\u003c\/li\u003e\n\u003cli\u003eFlanged outside diameter: 2.640 inches (67.056 mm)\u003c\/li\u003e\n\u003cli\u003eThickness\/width: 0.420 inches (10.670 mm)\u003c\/li\u003e\n\u003cli\u003eSealing material: Polyacrylate with Redicoat treatment\u003c\/li\u003e\n\u003cli\u003eHelix type: Counter-clockwise spiral lip design\u003c\/li\u003e\n\u003cli\u003eHousing bore diameter: 2.376 inches (60.350 mm)\u003c\/li\u003e\n\u003cli\u003eSeries: 4000, Type: 88\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Product Description\u003c\/h2\u003e\u003cp\u003eThe National 4370N transfer case output shaft seal is specifically designed for transfer cases in Dodge and Jeep models including Cherokee, CJ7, Comanche, Dakota, Durango, Grand Cherokee, Grand Wagoneer, Wagoneer, and Wrangler. Constructed from polyacrylate material, this oil seal offers resistance to heat and wear, ensuring a long service life. The counter-clockwise spiral lip design enhances sealing efficiency by directing fluid back into the transfer case, reducing the risk of leaks. The Redicoat treatment further improves durability and corrosion resistance.\u003c\/p\u003e\u003ch2\u003eCompatible Vehicles and Applications\u003c\/h2\u003e\u003cp\u003eThis output shaft seal is compatible with transfer cases found in the following vehicles:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eDodge Cherokee, Dakota, Durango\u003c\/li\u003e\n\u003cli\u003eJeep CJ7, Comanche, Grand Cherokee, Grand Wagoneer, Wagoneer, Wrangler\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCommon Issues Addressed by the 4370N Seal\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePrevents transfer case fluid leaks around the output shaft\u003c\/li\u003e\n\u003cli\u003eReduces contamination ingress into the transfer case\u003c\/li\u003e\n\u003cli\u003eMinimizes wear on the output shaft and housing bore\u003c\/li\u003e\n\u003cli\u003eMaintains proper lubrication within the transfer case\u003c\/li\u003e\n\u003cli\u003eHelps avoid costly transfer case repairs due to seal failure\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eEnsure the housing bore and shaft are clean and free of debris before installation\u003c\/li\u003e\n\u003cli\u003eUse appropriate tools to avoid damaging the seal during installation\u003c\/li\u003e\n\u003cli\u003eVerify correct orientation of the counter-clockwise spiral lip for optimal sealing\u003c\/li\u003e\n\u003cli\u003eCheck shaft and bore dimensions to confirm compatibility with the 4370N seal\u003c\/li\u003e\n\u003cli\u003eApply a light coat of transfer case fluid to the seal lip before installation\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eNational's 4370N transfer case output shaft seal is manufactured to meet industry standards for durability and performance. The polyacrylate material and Redicoat treatment provide enhanced resistance to wear and corrosion. This product is part of National's 4000 series, known for consistent quality in sealing systems. Warranty coverage details should be confirmed with the original equipment manufacturer or distributor.\u003c\/p\u003e","brand":"National","offers":[{"title":"Default Title","offer_id":43448197578933,"sku":"BCZK-4370N","price":15.79,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/NS_4370N_Fro.jpg?v=1774734521","url":"https:\/\/www.partcatalog.com\/products\/national-4370n-transfer-case-output-shaft-seal","provider":"PartCatalog","version":"1.0","type":"link"}