UFP Vault Hub Service KitBearing Kit for 3,700 lb. UFP Trailer Axles with 2.56" Vault Seal

A curated hub service kit containing inner and outer bearings, matching races, and a 2.56-inch Vault seal for compatible 3,700 lb. UFP trailer axle applications.

SKU: BK2-256-VAULT 3,700 lb. UFP Application 2.56" Vault SealKey Measurements & SpecsSpecificationDetailSKUBK2-256-VAULTProduct TypeTrailer hub bearing and seal kitAxle ApplicationCompatible 3,700 lb. UFP applicationsSeal Size1.68" ID x 2.56" ODInner BearingL68149 — 1.378" IDOuter BearingL44649 — 1.0625" IDQuantity IncludedOne complete single-hub service kitFitment / ApplicationCategoryDetailsTrailer SystemUFP-style trailer hub using the listed bearings, races, and Vault sealPrimary FitCompatible 3,700 lb. UFP axle applicationsTypical UseBoat and marine trailer hub maintenanceFitment MethodMatch the existing bearing numbers, race dimensions, and seal dimensionsImportant NoteAxle capacity alone does not confirm fitment. Verify every component before ordering.Top FeaturesFeatureBuyer BenefitSingle-Hub KitProvides the listed bearing, race, and seal components for servicing one compatible hub.2.56" Vault SealIncludes the specified 1.68" ID x 2.56" OD seal configuration.Matched RacesIncludes the corresponding inner and outer bearing races shown in the kit configuration.Special UFP Inner RaceIncludes the L68110 race with a 2.328" outside diameter.Important Fitment Note: Verify the bearing numbers, race dimensions, and seal dimensions against the components currently installed in your hub. Axle capacity alone does not guarantee compatibility. This listing contains one service kit for one compatible hub; grease, lubricant, installation tools, and additional hardware are not listed as included.R&P Knowledge Hub

Compatibility: Intended for compatible UFP trailer hubs using L68149 and L44649 bearings, the listed matching races, and a 2.56-inch outside-diameter Vault seal.

Axle Application: Commonly associated with compatible 3,700 lb. UFP trailer axle applications. Verify the installed hub components before ordering.

Installation Notes: Clean the hub thoroughly, inspect all bearing and seal contact surfaces, and install the new races evenly without damaging their seating surfaces.

Performance Insight: Correct bearing, race, and seal matching is essential. Similar-looking parts can have different dimensions and should not be selected by appearance or axle rating alone.

FeaturesComplete Single-Hub Component Set

Includes one inner bearing, one inner race, one outer bearing, one outer race, and one Vault seal.

3,700 lb. UFP Application

Configured for compatible UFP trailer axle hubs using the listed component numbers and dimensions.

2.56-Inch Vault Seal

Includes the 32123 seal measuring 1.68 inches inside diameter by 2.56 inches outside diameter.

Special UFP Inner Race

Includes the L68110 inner race with the specified 2.328-inch outside diameter.

Included ComponentsQuantityPart NumberIncluded Item132123Vault seal — 1.68" inside diameter x 2.56" outside diameter1L44610Outer bearing race — 1.9800" outside diameter1L44649Outer bearing — 1.0625" inside diameter1L68110Special UFP inner bearing race — 2.328" outside diameter1L68149Inner bearing — 1.378" inside diameterShop Related UFP & Vault PartsBK2-256-VAULT bearing kit, 3700 lb UFP axle bearing kit, UFP trailer hub bearing kit, UFP Vault bearing kit, 2.56 inch Vault seal kit, 32123 Vault seal, L68149 inner bearing, L68110 UFP race, L44649 outer bearing, L44610 outer race, boat trailer bearing kit, marine trailer hub service kit, single hub bearing and race kit

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