At a Glance
- SKU: 99-865-916HD-G-KIT
PRODUCT INFORMATION
Product Details
Trailer Hub Drum Service Kit
Hybrid 8K Trailer Hub Drum Service Kit – 8 on 6.5 – 9/16" Studs – Bearings, Seal & Oil Cap
Complete one-side hybrid hub drum service kit for matching 8000 lb trailer axle applications. Includes hub drum, bearings, grease seal, oil cap, center plug, O-ring, and eight 9/16"-18 coned lug nuts.
Part Number: 99-865-916HD-G-KIT Complete One-Side Kit 8 x 6.5 • 9/16" Stud
Overview
This R&P Carriages hybrid hub drum service kit is built around the 99-865-916HD hub drum for matching 8000 lb trailer axle applications. The kit includes the hub drum and matching service components listed in the B.O.M.: inner bearing, outer bearing, grease seal, oil cap, center oil plug, O-ring, and eight coned lug nuts. This is intended as a complete one-side hub drum service kit when all listed specifications match the trailer being serviced.
R&P Service Insight
This is sold as a complete kit, but fitment still needs to be confirmed against the trailer’s existing hub drum, spindle, cap, seal, and wheel hardware.
- Kit Fitment: Confirm the full kit matches your axle application, not just the hub drum number.
- Bearing Match: Verify the 25580 inner bearing and 2475 outer bearing before ordering.
- Seal / Cap Match: Confirm the 10-225 grease seal and 21-35 oil cap style before installation.
R&P Knowledge Hub
Compatibility: Complete hybrid hub drum kit for matching 8000 lb trailer axle applications using the listed bearing, seal, cap, and lug hardware combination.
Trailer / System Fit: 8 x 6.5 wheel bolt pattern with 9/16" studs and included 9/16"-18 coned lug nuts.
Installation Notes: Match the bearing numbers, grease seal size, cap size, stud size, wheel bolt pattern, and axle application to your existing trailer parts before ordering.
Performance Insight: This replacement kit does not increase the trailer’s GVWR. Always follow the lowest-rated component in the axle, suspension, wheel, tire, frame, and coupler system.
Brand & Fitment Note
Selling Brand: R&P Carriages trailer parts listing.
Application Reference: Hybrid hub drum kit, 8000 lb, 8 x 6.5, AM, 9/16" stud, with bearings, cap, and grease seal. Comparable to Lippert Hybrid L347627-style applications where all measurements and components match.
What This Listing Includes: One complete hub drum kit with all B.O.M. components listed below.
Before Ordering: Verify measurements, bearing numbers, seal size, cap thread, stud size, wheel pattern, axle application, and included components before installation.
R&P Repair Insight
When installing a hub drum kit, inspect the complete spindle and brake area before reassembly. A correct kit can still fail early if installed over a damaged spindle, worn brake assembly, or mismatched seal surface.
- Check the Spindle: Look for scoring, heat marks, pitting, or damage at the bearing journals and seal surface.
- Check the Brakes: Inspect shoes, magnets, springs, adjusters, and backing plate condition before installing the drum.
- Check the Wheel Hardware: Confirm wheel compatibility with an 8 x 6.5 bolt pattern and 9/16" studs.
Features
Complete Hub Drum Kit
Sold as one complete kit with hub drum, bearings, grease seal, oil cap components, O-ring, and lug nuts included.
8000 lb Application
Listed for matching 8000 lb trailer axle hub drum applications where all component specifications match.
8 x 6.5 Wheel Pattern
Built around an 8-lug hub drum using an 8 x 6.5 bolt circle for matching trailer wheel applications.
9/16" Stud Setup
Uses 9/16" studs and includes eight 9/16"-18 coned lug nuts for one hub drum position.
Specifications
| Specification | Detail |
|---|---|
| Kit SKU / Part Number | 99-865-916HD-G-KIT |
| Selling Brand | R&P Carriages |
| Product Type | Hybrid hub drum service kit |
| Listed Capacity | 8000 lb application |
| Hub Drum Included | 99-865-916HD |
| Bolt Pattern | 8 x 6.5 |
| Stud Size | 9/16" |
| Lug Nut Size | 9/16"-18 coned lug nut |
| Quantity Sold | One complete kit |
Fitment / Application
| Category | Details |
|---|---|
| Axle Application | Matching 8000 lb trailer axle hub drum applications |
| Wheel Pattern | 8 x 6.5 |
| Seal Reference | 10-225 grease seal, 2.25" x 3.38" |
| Application Reference | Comparable to Lippert Hybrid L347627-style applications where the existing hub drum, bearing set, seal, cap, stud size, and wheel bolt pattern match. |
| Fitment Notes | Confirm the full kit contents match your axle, spindle, hub drum, cap, seal, bolt pattern, and stud size before ordering. |
Detailed Measurements
| Key Dimension | Measurement |
|---|---|
| Bolt Pattern | 8 x 6.5 |
| Stud Size | 9/16" |
| Lug Nut Thread | 9/16"-18 |
| Grease Seal Size | 2.25" x 3.38" |
| O-Ring Size | 2.609" I.D. x .139" |
| Oil Cap Reference | 21-35, Dexter-style reference, 2.875"-12 |
Complete Kit Includes / B.O.M.
| Kit Qty | Part Number | Component Included In Kit |
|---|---|---|
| 1 | 99-865-916HD | Hub drum, 8000 lb listed application, 8 x 6.5, AM, 9/16" stud |
| 1 | 25580 | Bearing, 1.75" I.D., fits 25520 race / 12" drum / big hubs |
| 1 | 2475 | Bearing, 1.25" I.D., fits 02420 race / 7200 lb / 8000 lb axle applications where matched |
| 1 | 10-225 | Grease seal, 2.25" x 3.38", fits matching post-90 5200 lb / 6000 lb / 8000 lb style applications |
| 1 | 21-35 | Oil cap, Dexter-style reference, 2.875"-12, 6K-8K and pre-89 9K reference, fits matching 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 021-035-00 / 21-35 style cap applications |
| 8 | 6-053 | 9/16"-18 coned lug nuts |
Important Note: Comparable to Lippert Hybrid L347627-style applications where all dimensions, bearings, seal, cap, stud size, wheel pattern, and axle application match. Verify all measurements, specifications, spindle condition, brake components, wheel compatibility, and included kit contents before installation. OEM or platform names in this listing describe application reference only unless specifically stated and verified.
99-865-916HD-G-KIT hybrid hub drum kit, 99-865-916HD hub drum with bearings, 8000 lb trailer hub drum kit, 8 x 6.5 trailer hub drum, 9/16 stud hub drum kit, hybrid 8K hub drum service kit, Lippert Hybrid L347627 comparable application, 25580 bearing 2475 bearing 10-225 seal 21-35 oil cap, complete one side trailer hub drum kit
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