At a Glance
- SKU: TWMTP3.5KDBK
PRODUCT INFORMATION
Product Details
3.5K Hydraulic Disc Brake Kit – Complete Axle Set – 5 on 4.5 – TWMTP3.5KDBK
Part Number: TWMTP3.5KDBK
Complete hydraulic disc brake kit designed for 3,500 lb cargo and 3,700 lb boat trailer axles. Common replacement for UFP DB-35 configurations and widely used on boat trailers including Ranger, EZ Loader, and similar UFP/Vault style hub systems.
This kit includes rotor/hub assemblies, calipers, bearings, seals, dust caps, mounting hardware, and lug nuts for one complete axle. Designed to provide corrosion resistance and improved braking performance in marine and high-moisture environments.
R&P Knowledge Hub
Hydraulic disc systems on 3.5K axles offer improved heat dissipation and corrosion resistance compared to traditional drum brakes, making them common in marine applications. The rotor/hub assembly houses the bearing sets and seal, while the caliper applies hydraulic pressure directly to the rotor surface.
Proper identification of spindle size, bearing numbers (L68149 / L44649), seal diameter, and bolt pattern is critical. Many 3.5K axles look similar but use different seal dimensions. Always confirm spindle measurements before ordering.
Features
- Replacement for UFP 3500# DB-35 Brake Kit (UFP10DGK)
- Common on many boat trailer applications
- 10" Rotors – 17MM Minimum Thickness (Marked)
- Zinc-coated rotor/hubs and calipers
- Complete kit for one axle
Kit Includes
- 2x 10" Rotor/Hubs – 5 on 4.5" Bolt Pattern – Zinc Coated
- 2x DB35 Disc Brake Calipers
- 4x Caliper Bolts
- 2x 1.98" Dust Caps (DC-200L & DC-RP)
- 2x L44649 Outer Bearings (1-1/16")
- 2x L68149 Inner Bearings (1-3/8")
- 2x 32372 Seals (2.56" x 1.68")
- 2x 10-19 Seals (2.56" x 1.72")
- 10x 1/2"-20 Lug Nuts
Specifications
| Specification | Details |
| Axle Rating | 3,500 lb Cargo / 3,700 lb Boat Trailer |
| Brake Type | Hydraulic Disc |
| Rotor Diameter | 10" |
| Minimum Rotor Thickness | 17MM (Marked) |
| Bolt Pattern | 5 on 4.5" |
| Inner Bearing | L68149 (1-3/8") |
| Outer Bearing | L44649 (1-1/16") |
| Seal Options Included | 32372 (2.56" x 1.68") / 10-19 (2.56" x 1.72") |
| Lug Nuts | 1/2"-20 (10 Included) |
Verify specifications before installation.
Related Parts & Kits
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