At a Glance
- SKU: 99-86512-KIT
PRODUCT INFORMATION
Product Details
12K–15K Trailer Hub & Drum · 8 on 6.5" · Oil Bath · Heavy Duty
Part Number: 99-86512-KIT
This listing is for one (1) complete heavy-duty hub and drum kit designed for 12,000 lb and 15,000 lb trailer axles using oil-bath lubrication and an 8 on 6.5" bolt pattern.
This kit is commonly used as a replacement for Dexter® 9-28 drum / 8-214 hub assemblies and includes the hub, drum, bearings, oil seal, oil cap, O-ring, and plug required for service or replacement.
Features
- Heavy-duty hub & drum for 12K–15K trailer axles
- Oil-bath lubrication system
- 8 on 6.5" bolt pattern
- Accepts 5/8"-18 wheel studs
- Two-piece oil cap design
- Direct replacement for Dexter® 9-28 / 8-214 assemblies
Specifications
| Specification | Detail |
|---|---|
| Axle Rating | 12,000 – 15,000 lb |
| Bolt Pattern | 8 on 6.5" |
| Brake Size | 12.25" × 5" |
| Lubrication Type | Oil Bath |
| Hub / Drum Style | Integrated Hub & Drum |
| Stud Size | 5/8"-18 |
Kit Includes
| Component | Part Number | Description |
|---|---|---|
| Oil Seal | 10-3125-06 | 3.12" × 4.506" · Replaces Dexter® 10-56 |
| Oil Cap (2-Piece) | 021-036-00 | For 10K HD, 12K, 15K oil bath hubs |
| O-Ring | 010-050-00 | 3.734" ID × .139" |
| Oil Plug | 046-032-00 | Center plug for oil cap |
| Inner Bearing | 3984 | 2.625" ID · Uses 3920 race |
| Outer Bearing | 28682 | 2.25" ID · Uses 28622 race |
| Hub & Drum Assembly | 99-86512 | 12.25" × 5" · Includes 8-214 / 9-28 |
Fitment Notes
- Fits Dexter® and AL-KO oil-bath axles rated 12K–15K
- Designed for drums using Dexter® casting 9-28
- Replaces hub casting 8-214
- Not compatible with grease-lubed hubs
Always verify bearing numbers, seal size, and drum dimensions before ordering. Oil-bath hubs are application-specific.
What’s Included
- (1) Hub & Drum Assembly
- Bearings, seal, oil cap, O-ring, and plug
Related Parts & Kits
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815-357-3292 · 270 E Jackson St · Seneca, IL 61360
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Found the correct RV keys at a good price with free shipping; the keys worked as expected.
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Needed an unusual axle and leaf-spring size; the team listened and helped him sort out the fit.
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Replacement struts brought a long-used door back to working order.
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