RGP 12,000 lb Oil-Bath Hub Service Kit — 3984 / 28682 Bearings, Races, Seals & 4″ Threaded Caps — One Axle
RGP 12,000 lb Oil-Bath Hub Service Kit — 3984 / 28682 Bearings, Races, Seals & 4″ Threaded Caps — One Axle is backordered and will ship as soon as it is back in stock.
Couldn't load pickup availability
Care information
Care information
To ensure optimal performance and extend the service life of your new trailer components, please follow these care guidelines after purchase:
- Before installation, check all parts for shipping damage or missing components. Do not install damaged parts.
- Always use correct tools and torque settings. Improper installation can lead to premature wear or failure.
- For bearings, suspensions, and brake components, apply high-quality trailer grease before first use if not pre-greased.
- Some parts (like brake assemblies) require a short break-in period to achieve full performance. Follow manufacturer instructions for best results.
- Recheck fasteners, grease levels, and moving components after 100 miles of towing, then at regular intervals.
- After exposure to water, road salt, or mud, clean and dry parts thoroughly. Apply anti-rust treatment if needed.
- If storing unused parts, keep them in a dry, sealed container away from moisture and direct sunlight.
Delivery and Shipping
Delivery and Shipping
Handling Time: Orders ship out within 1 business day after payment is received.
Shipping Methods: We use trusted carriers like UPS, FedEx, or USPS based on package size and destination.
Delivery Time: Estimated delivery within 2–6 business days (U.S. domestic orders).
Tracking: A tracking number will be provided once your order is dispatched.
RGP 12,000 lb Oil-Bath Hub Service Kit — 3984 / 28682 Bearings, Rac...
Product Description:
Service both compatible oil-bath hubs on one 12,000 lb trailer axle with this RGP bearing, seal, and cap package. Each kit includes inner and outer tapered roller bearings, matching races, oil seals, and threaded oil caps with O-rings and rubber plugs.
The 3984 inner bearings pair with 3920 races, while the 28682 outer bearings pair with 28622 races. The included 10-56 oil seals and 4″ threaded caps replace the sealing components on compatible oil-bath hubs.
One kit supplies the listed components for two hubs on one axle.
Specifications:
Brand: Running Gear Parts
Product type: Oil-bath hub service kit
Application: Compatible Dexter-style 12,000 lb trailer axle hubs
Service quantity: Two hubs / one axle
Bearing type: Tapered roller
Inner bearing: 3984
Inner bearing bore: 2.625″
Inner race: 3920
Outer bearing: 28682
Outer bearing bore: 2.250″
Outer race: 28622
Oil seal reference: 10-56
Oil seal nominal dimensions: 3.125″ ID × 4.500″ OD
Oil cap mounting type: Threaded
Oil cap thread size: 4″-12
Cap sealing components: O-ring and rubber fill plug
Oil cap reference: Dexter 021-036-00 style
What's Included by Kit Option:
1 Axle Kit:
2 × 3984 inner bearings
2 × 3920 inner races
2 × 28682 outer bearings
2 × 28622 outer races
2 × 10-56 oil seals
2 × 4″-12 threaded oil caps
2 × oil cap O-rings
2 × rubber oil cap plugs
Compatibility & Fitment
For compatible 12,000 lb oil-bath hubs using 3984 inner bearings, 28682 outer bearings, matching races, 10-56 seals, and 4″-12 threaded oil caps.
Verify the original bearing numbers, seal dimensions, and cap threads before ordering. Axle capacity alone does not confirm compatibility.
For threaded-cap hubs only. Hubs equipped with bolt-on oil caps require a different cap configuration. This kit does not convert grease hubs to oil-bath lubrication.
Hub and drum assemblies, hub oil, spindle nuts, spindle washers, cotter pins, wheel-retaining rings, and lug nuts are not included.
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
