{"product_id":"ibroprat-trailer-bearing-kit-4-set-for-5200-6000-lb-d42-axles-25580-15123-bearings-seals-hardware","title":"iBroPrat Trailer Bearing Kit 4-Set for 5200–6000 lb D42 Axles — 25580 \u0026 15123 Bearings, Seals \u0026 Hardware","description":"\u003cp\u003e\u003cstrong\u003eiBroPrat 4Sets 5200-6000 lb trailer bearing kit supplies four complete hub repair sets for D42 spindles using 25580 and 15123 bearings.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eKeep your tandem-axle boat or utility trailer rolling with a full replacement kit designed for 5200–6000 lb (D42) spindles. This iBroPrat package bundles four complete bearing assemblies (36 pieces total) so you can service both hubs on a trailer or keep spares on hand. The set includes two common grease-seal sizes to fit shafts from 1.25\" to 1.75\", plus nuts, washers, cotter pins, dust caps and rubber plugs—everything needed to rebuild hubs without buying parts separately.\u003c\/p\u003e\n\n\u003ch3\u003eHow do I know this kit fits my trailer axle?\u003c\/h3\u003e\n\u003cp\u003eConfirm fit by checking your spindle type and bearing numbers. This kit is intended for D42 spindles and requires inner and outer bearings with model numbers 25580 and 15123 respectively. The dust cap outer diameter is 2.44\"—a quick visual or ruler check helps verify compatibility before purchase.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFits 1.25\"–1.75\" shafts on 5200–6000 lb D42 axles\u003c\/li\u003e\n  \u003cli\u003eIncludes bearings 25580 (outer) and 15123 (inner)\u003c\/li\u003e\n  \u003cli\u003eDust cap OD: 2.44\" for hub clearance check\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat comes in each of the four sets and why that matters?\u003c\/h3\u003e\n\u003cp\u003eEach of the four identical sets contains the bearing pair, a grease seal (one of two sizes), spindle nut, washer, cotter pin, dust cap and rubber plug. Delivered as four complete assemblies (36 pieces total), the kit covers full hub rebuilds for tandem-axle trailers or provides emergency spares in one package.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e4× 25580\/25520 outer bearings and 4× 15123\/15245 inner bearings\u003c\/li\u003e\n  \u003cli\u003e4× 10-36 grease seals (2.250\" ID) and 4× 10-10 grease seals (2.125\" ID)\u003c\/li\u003e\n  \u003cli\u003e4× spindle nuts, washers, cotter pins, dust caps, rubber plugs\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAre the seals and bearings durable for marine use?\u003c\/h3\u003e\n\u003cp\u003eThe components are manufactured with precision bearings and double-lip grease seals to limit leaks and reduce noise. While no kit can eliminate all environmental wear, the thicker seal lip and corrosion-resistant finishes extend service life under regular wet\/dry conditions common to boat trailers.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDouble-lip grease seals reduce grease loss and contamination\u003c\/li\u003e\n  \u003cli\u003ePrecision bearings designed for lower operating noise and smoother rotation\u003c\/li\u003e\n  \u003cli\u003eDurable materials and protective finishes for longer service\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does this kit save time and money compared with buying parts separately?\u003c\/h3\u003e\n\u003cp\u003ePurchasing the iBroPrat 4-set kit bundles all needed parts for multiple repairs at a fraction of the cost of sourcing each component individually. It also prevents costly downtime by keeping complete replacement sets on hand for quick hub swaps or on-trailer repairs.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eAll-in-one box reduces ordering and shipping costs\u003c\/li\u003e\n  \u003cli\u003eIncludes two grease-seal sizes for flexible shaft fitment\u003c\/li\u003e\n  \u003cli\u003ePackaged with bubble wrap in a heavy-duty box to prevent transit 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 trailer owners, boaters, small-fleet operators and DIY mechanics who need reliable, complete hub repair sets for D42 spindles. If you maintain tandem-axle trailers, perform regular pre-trip checks, or want spare assemblies to avoid roadside failures, this kit supplies the parts and flexibility to keep trailers moving.\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: Will these bearings fit a D42 spindle?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — the kit is made for D42 spindles on 5200–6000 lb axles and uses 25580 and 15123 bearings.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Do the seals cover different shaft diameters?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — the set includes 2.125\" and 2.250\" ID seals to adapt to shafts from 1.25\" to 1.75\".\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"iBroPrat","offers":[{"title":"Default Title","offer_id":67586602303673,"sku":"B0D7VG7TPX","price":165.19,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0822\/3765\/3177\/files\/ibroprat-front-packaging-kit.jpg?v=1790487986","url":"https:\/\/redleafauto.ca\/products\/ibroprat-trailer-bearing-kit-4-set-for-5200-6000-lb-d42-axles-25580-15123-bearings-seals-hardware","provider":"Redleaf Auto","version":"1.0","type":"link"}