{"product_id":"national-410308-automatic-transmission-extension-housing-seal","title":"National 410308 Automatic Transmission Extension Housing Seal - Front or Rear Outer","description":"\u003ch2\u003eOverview of National 410308 Automatic Transmission Extension Housing Seal\u003c\/h2\u003e\u003cp\u003eThe National 410308 automatic transmission extension housing seal is designed for reliable sealing performance in Ford Bronco, F-100, F-150, F-250, and F-350 models. Manufactured from durable nitrile material, this oil seal ensures effective protection against fluid leaks in your vehicle's transmission system.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eInside diameter: 2.125 inches (53.98 mm)\u003c\/li\u003e\n\u003cli\u003eOutside diameter: 3.066 inches (77.88 mm)\u003c\/li\u003e\n\u003cli\u003eThickness\/width: 0.500 inches (12.7 mm)\u003c\/li\u003e\n\u003cli\u003eSealing material: Nitrile for resistance to oil and heat\u003c\/li\u003e\n\u003cli\u003eRedicoat finish for enhanced durability\u003c\/li\u003e\n\u003cli\u003eZero duplication part ensuring precise fit and quality\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Product Description\u003c\/h2\u003e\u003cp\u003eThe National 410308 transmission extension housing seal is engineered to maintain a secure seal between the transmission extension housing and the shaft. Its nitrile construction offers excellent resistance to transmission fluids, heat, and wear, making it suitable for demanding automotive environments. The seal’s dimensions, including a 2.125-inch inside diameter and a 3.066-inch outside diameter, are optimized for compatibility with specific Ford models such as the Bronco and F-Series trucks. The Redicoat finish adds an extra layer of protection against corrosion and extends the service life of the seal.\u003c\/p\u003e\u003ch2\u003eApplications and Common Issues Addressed\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePrevents transmission fluid leaks from the extension housing\u003c\/li\u003e\n\u003cli\u003eReduces contamination ingress into the transmission system\u003c\/li\u003e\n\u003cli\u003eHelps maintain proper hydraulic pressure within the transmission\u003c\/li\u003e\n\u003cli\u003eMinimizes wear on the transmission shaft and housing interface\u003c\/li\u003e\n\u003cli\u003eAddresses seal failure symptoms such as fluid seepage and transmission slipping\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eEnsure the housing bore (3.061 inches) and shaft (2.125 inches) are clean and free of debris before installation\u003c\/li\u003e\n\u003cli\u003eUse appropriate tools to avoid damaging the nitrile seal during installation\u003c\/li\u003e\n\u003cli\u003eApply a light coating of transmission fluid to the seal lip to facilitate proper seating\u003c\/li\u003e\n\u003cli\u003eVerify correct orientation of the seal to prevent leaks\u003c\/li\u003e\n\u003cli\u003eInspect the transmission extension housing for wear or damage prior to seal replacement\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eNational transmission seals, including part number 410308, are manufactured to meet strict industry standards for durability and performance. The use of nitrile material and Redicoat finish ensures resistance to oil, heat, and corrosion. This part is a zero duplication item, guaranteeing precise fitment for Ford Bronco and F-Series trucks. 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":43448296833205,"sku":"BCZK-410308","price":22.83,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/NS_410308_Fro.jpg?v=1774734646","url":"https:\/\/www.partcatalog.com\/products\/national-410308-automatic-transmission-extension-housing-seal","provider":"PartCatalog","version":"1.0","type":"link"}