{"product_id":"national-471646-power-steering-pump-shaft-seal","title":"National 471646 Power Steering Pump Shaft Seal","description":"\u003ch2\u003eOverview of National Power Steering Pump Shaft Seal 471646\u003c\/h2\u003e\u003cp\u003eThe National Power Steering Pump Shaft Seal 471646 is designed specifically for Buick Roadmaster models, providing reliable sealing performance. Manufactured from durable nitrile material, this oil seal ensures effective containment of power steering fluid to maintain system integrity.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eInside diameter: 0.875 inch (22.230 mm)\u003c\/li\u003e\n\u003cli\u003eOutside diameter: 1.628 inch (41.350 mm)\u003c\/li\u003e\n\u003cli\u003eThickness\/width: 0.250 inch (6.350 mm)\u003c\/li\u003e\n\u003cli\u003eMaterial: Nitrile for resistance to oil and wear\u003c\/li\u003e\n\u003cli\u003eRedicoat finish for enhanced corrosion protection\u003c\/li\u003e\n\u003cli\u003eHousing bore size: 1.624 inch (41.250 mm)\u003c\/li\u003e\n\u003cli\u003ePart number: 471646, zero duplication part\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Product Description\u003c\/h2\u003e\u003cp\u003eThis power steering pump shaft seal from National is engineered to meet the precise specifications required for the Buick Roadmaster. The seal features a 0.875 inch inside diameter to fit the pump shaft securely, while the 1.628 inch outside diameter matches the housing bore for a tight fit. Constructed from nitrile, the seal offers excellent resistance to hydraulic fluids and temperature variations commonly encountered in power steering systems. The 0.250 inch thickness provides durability without compromising flexibility. Additionally, the Redicoat finish helps prevent corrosion, extending the service life of the seal.\u003c\/p\u003e\u003ch2\u003eCompatible Applications and Common Issues Addressed\u003c\/h2\u003e\u003cp\u003eThis power steering pump shaft seal is compatible with Buick Roadmaster vehicles requiring part number 471646. It is designed to address common power steering system problems such as:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFluid leaks around the power steering pump shaft\u003c\/li\u003e\n\u003cli\u003eLoss of hydraulic pressure due to seal failure\u003c\/li\u003e\n\u003cli\u003eContamination ingress causing premature pump wear\u003c\/li\u003e\n\u003cli\u003eNoise or vibration from worn or damaged seals\u003c\/li\u003e\n\u003cli\u003eReduced steering responsiveness linked to fluid leakage\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eWhen installing the National 471646 power steering pump shaft seal, ensure the following for optimal performance:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eClean the housing bore and shaft thoroughly before installation\u003c\/li\u003e\n\u003cli\u003eInspect the pump shaft for wear or damage and replace if necessary\u003c\/li\u003e\n\u003cli\u003eUse appropriate tools to press the seal evenly into the housing bore\u003c\/li\u003e\n\u003cli\u003eApply a light coating of power steering fluid to the seal lip before installation\u003c\/li\u003e\n\u003cli\u003eVerify proper alignment to avoid seal distortion or leaks\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eQuality Assurance and Warranty Information\u003c\/h2\u003e\u003cp\u003eNational manufactures this power steering pump shaft seal to meet industry standards for durability and performance. The part number 471646 is a zero duplication part, ensuring authenticity and fitment accuracy for Buick Roadmaster models. While specific warranty details may vary, National typically backs its sealing products with a limited warranty against defects in materials and workmanship.\u003c\/p\u003e","brand":"National","offers":[{"title":"Default Title","offer_id":43448301453493,"sku":"BCZK-471646","price":17.96,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/NS_471646_Fro.jpg?v=1774734661","url":"https:\/\/www.partcatalog.com\/products\/national-471646-power-steering-pump-shaft-seal","provider":"PartCatalog","version":"1.0","type":"link"}