{"product_id":"ibroprat-boat-trailer-axle-bearing-kit-4-set-for-5200-6000-lb-d42-spindles-25580-15123-bearings-seals-included","title":"iBroPrat Boat Trailer Axle Bearing Kit 4-Set for 5200–6000 lb D42 spindles — 25580 \u0026 15123 bearings, seals included","description":"\u003cp\u003e\u003cstrong\u003eiBroPrat 4Sets 5200–6000 lb Boat Trailer Axle Bearing Kit supplies four complete hub repair sets engineered to fit D42 spindles with 25580 and 15123 bearings for dependable trailer wheel performance.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis comprehensive kit bundles the bearings, seals, fasteners and dust caps needed to service tandem axles rated 5,200–6,000 lb, saving you time and cost versus buying parts individually. All components arrive pre-packaged and protected to reduce transit damage; the kit supports both 2.125\" and 2.25\" shaft inner diameters through two seal sizes, so it adapts to common D42 spindle variations.\u003c\/p\u003e\n\n\u003ch3\u003eWhat exactly is included in this 4-set bearing kit?\u003c\/h3\u003e\n\u003cp\u003eThe kit contains four full hub repair sets (36 pieces total) so you can service both ends of a tandem-axle trailer or keep spares on hand. Each set is assembled with the bearings, seals, nuts and caps needed for a complete hub rebuild.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e4 × inner\/outer bearings: 25580 \/ 25520\u003c\/li\u003e\n  \u003cli\u003e4 × inner\/outer bearings: 15123 \/ 15245\u003c\/li\u003e\n  \u003cli\u003e4 × grease seals 10-36 (22333TB, 2.250\" ID × 3.376\" OD)\u003c\/li\u003e\n  \u003cli\u003e4 × grease seals 10-10 (21333TB, 2.125\" ID × 3.376\" OD)\u003c\/li\u003e\n  \u003cli\u003e4 × spindle nuts, 4 × washers, 4 × cotter pins\u003c\/li\u003e\n  \u003cli\u003e4 × dust caps (2.44\" OD) and 4 × rubber plugs\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill these bearings fit my 5200–6000 lb D42 spindle axle?\u003c\/h3\u003e\n\u003cp\u003eThis set is designed for D42 spindles with shaft diameters between 1.25\" and 1.75\" and for bearing part numbers 25580 and 15123. The inclusion of two grease-seal inner diameters lets you accommodate shafts that fall within that range without extra machining or adapters.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFits spindle type: D42\u003c\/li\u003e\n  \u003cli\u003eShaft compatibility: 1.25\"–1.75\" (2.125\" and 2.250\" seal options)\u003c\/li\u003e\n  \u003cli\u003eConfirm bearings: inner\/outer 25580 and 15123\u003c\/li\u003e\n  \u003cli\u003eDust cap outer diameter: 2.44\"\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow robust and leak-resistant are the seals and materials?\u003c\/h3\u003e\n\u003cp\u003eComponents are manufactured to precision bearing tolerances and the seals feature a double-lip design to reduce grease loss and resist contamination. Materials are chosen for corrosion resistance and durability in towing and marine environments, minimizing noise and wear under normal trailer loads.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDouble-lip grease seals to limit leakage\u003c\/li\u003e\n  \u003cli\u003ePrecision bearings for quiet operation\u003c\/li\u003e\n  \u003cli\u003eDurable dust caps and hardware for longer service life\u003c\/li\u003e\n  \u003cli\u003ePacked securely to prevent transit damage\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does this kit save time and money during repairs?\u003c\/h3\u003e\n\u003cp\u003eBuying a complete 4-set kit eliminates multiple orders and ensures matched bearings and seals for consistent hub performance. It lets you tackle all four hubs of a tandem axle at once and reduces downtime by providing all common hardware in a single package.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSingle shipment for all hubs, no part hunting\u003c\/li\u003e\n  \u003cli\u003eCost-efficient compared with purchasing parts individually\u003c\/li\u003e\n  \u003cli\u003eIncludes spare rubber plugs and caps for immediate reuse\u003c\/li\u003e\n  \u003cli\u003eBoxed with bubble wrap to reduce returns for damage\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The iBroPrat 4Sets 5200–6000 lb bearing kit is aimed at boat owners, trailer service shops and DIY mechanics who maintain tandem-axle trailers with D42 spindles. Choose this kit if you need a complete, well-packed repair solution that fits 25580 and 15123 bearing specifications and offers both 2.125\" and 2.250\" seal options for shaft adaptability.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Do these kits work with both 2.125\" and 2.250\" shaft diameters?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The kit includes two seal sizes (21333TB and 22333TB) to fit 2.125\" and 2.250\" inner diameters respectively.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Are the bearings in this kit the correct 25580 and 15123 sizes?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. Each of the four sets contains bearings matching 25580 and 15123 specifications for D42 spindles.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"iBroPrat","offers":[{"title":"Default Title","offer_id":48080847503518,"sku":"B0D7VG7TPX","price":94.98,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/ibroprat-front-packaging-kit.jpg?v=1785790246","url":"https:\/\/northtrailauto.ca\/products\/ibroprat-boat-trailer-axle-bearing-kit-4-set-for-5200-6000-lb-d42-spindles-25580-15123-bearings-seals-included","provider":"North Trail Auto","version":"1.0","type":"link"}