{"title":"Trailer Hubs \u0026 Bearings for EZ Loader | Hub vs Hub Parts Guide","description":"\u003ch2\u003eTrailer Hubs \u0026amp; Bearings for EZ Loader Trailers\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eNot sure if you need a complete hub or just bearings and seals?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eMost customers fall into one of two situations:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplacing a complete hub assembly\u003c\/strong\u003e\u003cbr\u003e👉 \u003ca href=\"\/collections\/trailer-hubs\" target=\"_blank\" rel=\"noopener\"\u003eShop Trailer Hubs\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eServicing or rebuilding an existing hub\u003c\/strong\u003e\u003cbr\u003e👉 \u003ca href=\"\/collections\/trailer-hub-parts\" target=\"_blank\" rel=\"noopener\"\u003eShop Trailer Hub Parts (bearings, seals, caps, and hardware)\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eTrailer hubs and bearing components are critical for safe towing and proper wheel performance. Whether you're replacing a complete hub assembly or servicing existing components, selecting the correct parts is essential.\u003c\/p\u003e\n\u003cp\u003eFitment depends on your trailer’s axle, spindle size, and hub configuration—not all parts are interchangeable.\u003c\/p\u003e\n\u003cp\u003eAt EZLoaderParts411.com, we match parts based on real-world trailer setups—not guesswork. If you're unsure what fits, call us first and we’ll help you get it right.\u003c\/p\u003e","products":[{"product_id":"d-shaped-spindle-washer-trailer-axle-290-034114","title":"EZ Loader D-Shaped Spindle Washer (D-Flat) 290-034114","description":"\u003c!-- ABOVE THE FOLD --\u003e\n\u003cp\u003e\u003cstrong\u003eD-shaped spindle washer designed for trailer axles with a flat (D-shaped) spindle surface—used to maintain alignment, prevent rotation, and support proper hub assembly.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eUnlike standard round washers, this washer locks onto the spindle flat to prevent spinning under load and ensure proper hardware positioning.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eD-shaped washer for flat spindle surfaces\u003c\/li\u003e\n\u003cli\u003ePrevents rotation under torque\u003c\/li\u003e\n\u003cli\u003eMaintains alignment in hub assembly\u003c\/li\u003e\n\u003cli\u003eCritical for proper spindle hardware fitment\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003e👉 Not sure if this is the correct size? Call us—we’ll help you match it properly.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003c!-- FITMENT WARNING BOX --\u003e\n\u003cdiv style=\"border:1px solid #d9534f; background:#fff5f5; padding:14px; margin:18px 0;\"\u003e\n  \u003cp style=\"margin:0;\"\u003e\u003cstrong\u003e⚠️ Important Fitment Note:\u003c\/strong\u003e\u003c\/p\u003e\n  \u003cp style=\"margin:6px 0 0 0;\"\u003e\u003cstrong\u003eDesigned for D-flat spindle shafts only.\u003c\/strong\u003e\u003c\/p\u003e\n  \u003cp style=\"margin:6px 0 0 0;\"\u003eThis washer will \u003cstrong\u003eNOT work on round or keyed spindles.\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c!-- DETAILS --\u003e\n\n\u003cp\u003e\u003cstrong\u003ePart Name:\u003c\/strong\u003e D-Shaped Spindle Washer (Flat)\u003cbr\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 290-034114\u003c\/p\u003e\n\n\u003ch3\u003eFitment Clarification\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003e👉 Not all D-shaped spindle washers are the same.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003emultiple sizes exist\u003c\/li\u003e\n\u003cli\u003edimensions and spindle fitment vary\u003c\/li\u003e\n\u003cli\u003ethis part must match your spindle size and flat profile\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eUsing the incorrect size can result in improper seating, rotation, or premature wear within the hub assembly.\u003c\/p\u003e\n\n\u003ch3\u003eWhat Makes This Washer Different\u003c\/h3\u003e\n\u003cp\u003eThis is not a standard washer.\u003c\/p\u003e\n\n\u003cp\u003eThe flat edge aligns with the spindle flat to:\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eprevent rotation\u003c\/li\u003e\n\u003cli\u003emaintain alignment\u003c\/li\u003e\n\u003cli\u003eensure proper hardware seating\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFunction \u0026amp; Purpose\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eprevents washer rotation under torque\u003c\/li\u003e\n\u003cli\u003emaintains correct positioning of spindle hardware\u003c\/li\u003e\n\u003cli\u003esupports proper preload and alignment\u003c\/li\u003e\n\u003cli\u003eacts as a mechanical locking interface\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCross-Compatibility\u003c\/h3\u003e\n\u003cp\u003eThis washer design is not exclusive to EZ Loader.\u003c\/p\u003e\n\n\u003cp\u003eUsed across multiple trailer manufacturers with similar D-flat spindle designs.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eFitment must always be verified by spindle shape and dimensions—not brand alone.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eStyle: D-shaped (flat side)\u003c\/li\u003e\n\u003cli\u003eMaterial: Steel\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy This Part Matters\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003e👉 Prevents rotation and maintains proper alignment within the hub assembly.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eUsing a standard round washer or incorrect size can lead to improper seating, hardware movement, and premature wear.\u003c\/p\u003e\n\n\u003ch3\u003eReal-World Insight\u003c\/h3\u003e\n\u003cp\u003eAt 411-Trailers Group, we work with trailer axle systems regularly. One of the most common issues we see is incorrect spindle hardware being substituted for application-specific components like this washer.\u003c\/p\u003e\n\n\u003cp\u003eMatching the correct washer to the spindle design is critical for proper assembly and long-term reliability.\u003c\/p\u003e","brand":"EZLoaderParts411.com","offers":[{"title":"Default Title","offer_id":52897105609069,"sku":"290-034114","price":2.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0966\/3761\/6493\/files\/290-034114DWasher.jpg?v=1767893939"},{"product_id":"ez-loader-knott-sealed-bearing-hub-kit-2700-pwc-jon-small-boat-trailer-250-033291","title":"EZ Loader Knott Sealed Bearing Hub Kit 2700# PWC Jon Small Boat Trailer  250-033291","description":"\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003ePart Name: \u003c\/strong\u003eKnott Sealed Bearing Hub Kit 2700#\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003e\u003cspan\u003ePart Number: \u003c\/span\u003e\u003c\/b\u003e250-033291\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan\u003e\u003cstrong\u003eDimensions:\u003c\/strong\u003e \u003c\/span\u003eDiameter 6-1\/2\" x  3-1\/2\"\u003cstrong\u003eH\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003e\u003cspan\u003eMaterial:\u003c\/span\u003e \u003c\/b\u003eMarine Coated Steel\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003e\u003cspan\u003eColor:\u003c\/span\u003e\u003c\/b\u003e Gray\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003e\u003cspan\u003eFitment:\u003c\/span\u003e \u003c\/b\u003e\u003cspan\u003eFits AutoFlex-Knott Torsion Axle\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eIncluded Components: \u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e(1) Pre -Assembled Sealed Hub\u003c\/li\u003e\n\u003cli\u003e(1) Dust Cap\u003c\/li\u003e\n\u003cli\u003e(1) O-Ring\u003c\/li\u003e\n\u003cli\u003e(1) Flange Nut\u003c\/li\u003e\n\u003cli\u003e(5) Lug Nuts\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch5 class=\"MsoNormal\"\u003e\u003cspan\u003eKey Features\u003c\/span\u003e\u003c\/h5\u003e\n\u003cp class=\"MsoNormal\"\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"MsoNormal\"\u003e\u003cspan\u003eOEM Replacement  \u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003e\u003cspan\u003eProper Fit and Performance\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003e\u003cspan\u003eComplete Knott Sealed Bearing Hub Kit \u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003e\u003cspan style=\"font-family: Arial, sans-serif;\"\u003e\u003cspan\u003eDesigned for Knott AutoFlex Torsion Axle\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003e\u003cspan style=\"font-family: Arial, sans-serif;\"\u003e\u003cspan\u003e2700lb Rated Hub\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003e\u003cspan style=\"font-family: Arial, sans-serif;\"\u003e\u003cspan\u003eWorks on 5 on 4.5\" Bolt Pattern Wheels\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003e\u003cspan style=\"font-family: Arial, sans-serif;\"\u003e\u003cspan\u003eFactory Sealed, Non-Serviceable\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003e\u003cspan style=\"font-family: Arial, sans-serif;\"\u003e\u003cspan\u003eEngineered for Reliability\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003e\u003cspan style=\"font-family: Arial, sans-serif;\"\u003e\u003cspan\u003eLow Maintenance\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003e\u003cspan style=\"font-family: Arial, sans-serif;\"\u003e\u003cspan\u003eSmooth Towing Performance\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003e\n\u003cspan style=\"font-family: Arial, sans-serif;\"\u003e\u003cspan\u003eSimplified Maintenance \u003c\/span\u003e\u003c\/span\u003e\n\u003cul\u003e\n\u003cli class=\"MsoNormal\"\u003e\u003cspan style=\"font-family: Arial, sans-serif;\"\u003e\u003cspan\u003e(eliminates need for periodic greasing)\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp align=\"center\" class=\"MsoNormal\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp align=\"center\" class=\"MsoNormal\"\u003e \u003c\/p\u003e\n\u003cp align=\"center\" class=\"MsoNormal\"\u003e\u003cb\u003e\u003cspan\u003eEasy to Install\u003c\/span\u003e\u003c\/b\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp align=\"center\" class=\"MsoNormal\"\u003e\u003ci\u003eMounting Hardware\u003cspan\u003e \u003c\/span\u003e\u003cspan style=\"color: rgb(255, 42, 0);\"\u003e\u003cb\u003eNOT\u003c\/b\u003e\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003eIncluded\u003c\/i\u003e\u003c\/p\u003e","brand":"EZLoaderParts411.com","offers":[{"title":"Default Title","offer_id":53121877639533,"sku":"250-033291","price":175.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0966\/3761\/6493\/files\/EZLoader250-033291PWCKnottHubwholekit.jpg?v=1773772037"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0966\/3761\/6493\/collections\/EZ_Loader_5_Lug_Oil_Bath_Hub_Installed_on_Trailer_Axle.jpg?v=1774372636","url":"https:\/\/ezloaderparts411.com\/collections\/trailer-hubs-bearings.oembed","provider":"EZLoaderParts411.com","version":"1.0","type":"link"}