iBroPrat Boat Trailer Axle Bearing Kit 4-Set for 5200–6000 lb D42 spindles — 25580 & 15123 bearings, seals included

iBroPrat 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.

This 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.

What exactly is included in this 4-set bearing kit?

The 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.

• 4 × inner/outer bearings: 25580 / 25520
• 4 × inner/outer bearings: 15123 / 15245
• 4 × grease seals 10-36 (22333TB, 2.250" ID × 3.376" OD)
• 4 × grease seals 10-10 (21333TB, 2.125" ID × 3.376" OD)
• 4 × spindle nuts, 4 × washers, 4 × cotter pins
• 4 × dust caps (2.44" OD) and 4 × rubber plugs

Will these bearings fit my 5200–6000 lb D42 spindle axle?

This 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.

• Fits spindle type: D42
• Shaft compatibility: 1.25"–1.75" (2.125" and 2.250" seal options)
• Confirm bearings: inner/outer 25580 and 15123
• Dust cap outer diameter: 2.44"

How robust and leak-resistant are the seals and materials?

Components 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.

• Double-lip grease seals to limit leakage
• Precision bearings for quiet operation
• Durable dust caps and hardware for longer service life
• Packed securely to prevent transit damage

How does this kit save time and money during repairs?

Buying 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.

• Single shipment for all hubs, no part hunting
• Cost-efficient compared with purchasing parts individually
• Includes spare rubber plugs and caps for immediate reuse
• Boxed with bubble wrap to reduce returns for damage

Who 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.