
This 30ft flexible rubber brake hose is designed and DOT approved for hydraulic trailer brake systems, making it an excellent choice for boat trailers and other heavy-duty trailer applications. Typically installed from the master cylinder or surge coupler along the trailer frame to the first axle, this hose supports both drum and disc brake configurations with high-pressure performance. Its UV-resistant construction protects against sun and saltwater damage in marine environments. The hose is equipped with durable brass 3/16-inch male inverted flare fittings using a standard 3/8"-24 thread, ensuring a secure, leak-free connection with most trailer brake components including calipers, wheel cylinders, master cylinders, and solenoid valves. Swivel fittings prevent twisting during installation, providing reliable brake fluid transmission under demanding conditions.
Product Specifications:
- Length: 30 ft (360 inches)
- Material: Flexible rubber, UV resistant
- Certification: DOT approved
- Fitting Type: Male inverted flare
- Fitting Size: Brass 3/16-inch
- Thread Size: 3/8"-24
- Pressure Rating: High pressure for drum/disc brakes
- Application: Hydraulic trailer brake systems for boat trailers and similar applications
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Description |
Material |
Overall Length |
Hose I.D. |
Fitting Thread |
Application |
Brake Line kit |
Rubber |
30 FT |
1/8'' |
3/8"-24 |
calibrated pressure valves, called brake lines, that let the car know when you want to slow down. The hoses are thin tubes filled with pressurized air that connect the master cylinder in the cabin to the brake calipers via the wheel cylinders and brake pads. |


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