{"product_id":"national-np949481-differential-pinion-race-rear-inner","title":"National NP949481 Differential Pinion Race - Rear Inner","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\u003cp\u003eNational NP949481 is a differential pinion race built for Ford rear axle applications that use a 10.5-inch ring gear and Ford differential. It is engineered for the rear inner position and uses premium-grade steel with crowned raceways for even load distribution.\u003c\/p\u003e\u003cp\u003eUse this part for Ford F-150, F-250 Super Duty, and related heavy-duty applications where the specified axle setup is present. The NP949481 is also listed for select Lincoln and Ford van applications with the same differential configuration.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePremium-grade steel construction for bearing support in demanding driveline service.\u003c\/li\u003e\n\u003cli\u003eCrowned raceways promote even load distribution across the bearing surface.\u003c\/li\u003e\n\u003cli\u003eDesigned for rear inner differential pinion applications.\u003c\/li\u003e\n\u003cli\u003eFits Ford axle setups with a 10.5-inch ring gear and Ford differential.\u003c\/li\u003e\n\u003cli\u003eThis part cross-references Ford (e.g., F81Z4628AA) for the same application.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Description\u003c\/h2\u003e\u003cp\u003eNational NP949481 is a taper bearing cup used in the differential pinion assembly. Its crowned raceway profile helps distribute load more evenly, while the steel construction supports consistent operation in axle assemblies that see regular driveline stress. This part number is specified for multiple Ford truck, van, and SUV platforms, including Ford F-150, Ford F-250 Super Duty, and Ford Excursion applications with the correct rear inner differential setup. The NP949481 is a direct fit for the listed axle configuration and should be matched carefully to the ring gear and differential type noted in the fitment data.\u003c\/p\u003e\u003ch2\u003eWhat It Is Used For\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eReplacing a worn or damaged differential pinion race.\u003c\/li\u003e\n\u003cli\u003eAddressing bearing noise from the rear axle assembly.\u003c\/li\u003e\n\u003cli\u003eRestoring proper pinion bearing support and alignment.\u003c\/li\u003e\n\u003cli\u003eCorrecting uneven wear in the differential bearing surface.\u003c\/li\u003e\n\u003cli\u003eServicing Ford rear axle assemblies with the specified differential configuration.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eVerify the axle configuration before ordering. This part is listed only for rear inner applications with a 10.5-inch ring gear and Ford differential. Match the part number NP949481 to the vehicle’s axle specification and inspect the related bearing components during service. Professional installation is recommended for differential bearing work because correct race seating and preload are critical to assembly performance.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eNational manufactures this bearing component with premium-grade steel and crowned raceways to support even load distribution in differential service.\u003c\/p\u003e","brand":"National","offers":[{"title":"Default Title","offer_id":53669367644341,"sku":"BCZK-NP949481","price":80.73,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/NS_NP949481_Ang.jpg?v=1793692317","url":"https:\/\/www.partcatalog.com\/products\/national-np949481-differential-pinion-race-rear-inner","provider":"PartCatalog","version":"1.0","type":"link"}