Hybrid Hub Drum, 7K - 8K x 6.5, AM, 9/16" Stud, With Bearings, Cap, and OIL SEAL
Complete one-wheel hybrid hub drum service kit for compatible 8000# hybrid axle applications. Includes the hub drum, bearings, oil seal, oil cap, center plug, O-ring, and eight 9/16"-18 coned lug nuts. Important Note: Comparable to Lippert Hybrid (L347627).
Overview
This R&P Carriages supplied aftermarket replacement kit is a complete hybrid hub drum kit for one trailer wheel position. It is built around an 8000# hybrid hub drum with an 8 on 6.5" bolt pattern, 9/16" studs, 4.75" pilot, and oil-bath cap components. This kit is commonly used to service Lippert / LCI L347627-style hybrid drum applications where the bearing set, seal size, cap thread, pilot, bolt pattern, and stud size match.
R&P Service Insight
Hybrid hub drums need to be matched by more than axle rating alone. Verify the wheel-end details before ordering so the drum, bearings, seal, cap, and brake package all match the trailer.
- Bearing Match: Uses 25580 inner bearing and 2475 / 02475-style outer bearing.
- Oil Bath Setup: Includes oil cap, center plug, O-ring, and oil seal.
- Wheel Hardware: Includes eight 9/16"-18 coned lug nuts for the hub drum.
R&P Knowledge Hub
Compatibility: Designed for 8K hybrid hub drum applications using an 8 x 6.5" bolt pattern, 9/16" studs, 4.75" pilot, 25580 inner bearing, and 2475 / 02475-style outer bearing.
Vehicle / System Fit: Commonly referenced for Lippert / LCI 8K hybrid axle setups used on Kaufman, Sure-Trac, and other trailers using compatible LCI-style hybrid axle hardware.
Installation Notes: Confirm spindle condition, seal journal condition, bearing races, brake compatibility, and oil-bath cap setup before final assembly.
Performance Insight: This hybrid setup works with 12" x 2" brake assemblies while using larger 8K-style bearing hardware for the hub drum.
Brand & Fitment Note
Selling Brand: R&P Carriages supplied aftermarket replacement kit.
Application Reference: Lippert, LCI, and L347627 references describe compatible application style only where the trailer's measurements, bearing set, seal size, oil cap thread, pilot, bolt pattern, and stud size match.
What This Means: This listing is for one complete hub drum kit, not a loose drum only. The kit includes the drum, bearings, oil seal, oil cap, oil plug, O-ring, and lug nuts shown in the bill of materials.
Before Ordering: Match your existing hub by bearing numbers, oil seal size, oil cap thread, bolt pattern, wheel stud size, and pilot hole. Do not order by axle rating alone.
R&P Repair Insight
When replacing a hub drum, inspect the full wheel-end system before reinstalling the wheel. A new drum and bearing kit cannot correct spindle damage, brake wear, incorrect seal fitment, or damaged wheel hardware.
- Check The Spindle: Inspect the bearing journals and seal surface for scoring, heat marks, wear, or galling.
- Check The Brakes: Confirm your 12" x 2" brake assembly is serviceable and adjusted correctly.
- Check The Oil Bath: Confirm cap, plug, O-ring, and seal are correctly installed before filling and road use.
Features
Complete One-Wheel Kit
Includes one 8K hybrid hub drum plus the bearing, seal, oil cap, plug, O-ring, and lug nut hardware listed in the BOM.
8K Hybrid Bearing Setup
Uses larger 8K-style bearing hardware: 25580 inner bearing and 2475 / 02475-style outer bearing for compatible hybrid axle setups.
8 Lug On 6.5" Bolt Circle
Built for 8-lug wheels using an 8 x 6.5" bolt pattern with 9/16" wheel studs and included coned lug nuts.
Oil Bath Components Included
Includes the oil seal, oil cap, center oil plug, and O-ring needed for compatible oil-bath hub drum service.
Specifications
| Specification | Detail |
|---|---|
| Part Number | 99-865-916HD-KIT |
| Listing SKU | 99-865-916HD-KIT |
| Selling Brand | R&P Carriages supplied aftermarket replacement kit |
| Product Type | Hybrid hub drum kit |
| Quantity Included | 1 complete kit for 1 hub/drum position |
| Axle Application | 8000# hybrid axle applications |
| Brake Compatibility | 12" x 2" brake assemblies, where bearing and hub specs match |
| Bolt Pattern | 8 x 6.5" |
| Stud Size | 9/16" |
| Pilot Hole | 4.75" |
| Oil Seal | 10-225-15-08 | 2.25" x 3.38" |
Fitment / Application
| Category | Details |
|---|---|
| Vehicle / System | Trailer hub drum / axle wheel-end assembly |
| Primary Fit | Lippert / LCI 8K hybrid axle applications using compatible hybrid drum specifications |
| Common Trailer Uses | Kaufman, Sure-Trac, and other trailers using compatible LCI-style 8K hybrid axle hardware |
| Important Note | This is not a universal 8K drum. Confirm bearing set, seal size, oil cap, pilot, bolt pattern, and stud size before ordering. |
Detailed Measurements
| Key Dimension | Measurement |
|---|---|
| Drum Size | 12" x 2" |
| Bolt Circle | 8 on 6.5" |
| Wheel Stud / Lug Nut Size | 9/16"-18 coned lug nut |
| Pilot Hole | 4.75" |
| Inner Bearing | 25580 | 1.75" ID | Fits 25520 race |
| Outer Bearing | 2475 / 02475-style | 1.25" ID | Fits 02420 race |
| Oil Seal | 10-225-15-08 | 2.25" x 3.38" |
| Oil Cap Thread | 21-35 oil cap | 2.875"-12 |
Included Components
| Quantity | Part Number | Item Included |
|---|---|---|
| 1 | 99-865-916HD | Hub drum, 8000#, 8 x 6.5, aftermarket, 9/16" studs, for 02475 / 25580 bearing setup |
| 1 | 25580 | Bearing, 1.75" ID, fits 25520 race / 12" drum / big hubs |
| 1 | 2475 | Bearing, 1.25" ID, fits 02420 race / 7200# / 8000# axles |
| 1 | 10-225-15-08 | Oil seal, black rubber, 2.25" x 3.38" |
| 1 | 21-35 | Oil cap, Dexter, 2.875"-12, 6K-8K & Pre-89 9K, fits compatible Lippert-style applications |
| 1 | 046-032-00 | Oil plug, center plug for hole in center of oil cap |
| 1 | 010-045-00 | O-ring, 2.609" I.D. x .139, for compatible oil cap assemblies |
| 8 | 6-053 | 9/16"-18 coned lug nuts |
What Is Not Included
This kit includes only the components listed in the bill of materials above. Brake backing plates, brake shoes, brake magnets, spindle hardware, hub oil, wheels, tires, and installation tools are not included unless specifically shown or stated.
