Dexter Brake Line Kit K71-G00-40 - Flexible 3/16 x 24 Inch Brass Trailer Brake Hose

The Dexter K71-G00-40 is a flexible brake line kit built for trailer brake systems, including boat trailer brake setups where a hydraulic connection needs to flex with axle and suspension movement. The line measures 3/16 inch in diameter by 24 inches in length and is constructed of brass, a material chosen for its corrosion resistance in wet and road-salt environments and its ability to hold up under sustained hydraulic pressure. It is rated for a maximum working pressure of 3000 pounds per square inch, well above typical trailer brake system operating pressures, giving an added margin of safety.

This kit is sold as a single flexible line and is intended as a direct hydraulic connector between rigid brake line runs and the axle-mounted brake assembly, or between the trailer frame and a swiveling hub, where a rigid line would crack or fatigue from repeated flex. Because it is brass rather than a rubber-jacketed hose, it resists collapsing under vacuum and holds its shape under pressure cycling, which is important for consistent trailer brake feel and stopping performance. The 24 inch length accommodates typical axle travel and mounting offsets on boat and utility trailers.

Specifications

• Brand: Dexter
• Manufacturer Part Number: K71-G00-40
• Material: Brass
• Color/Finish: Brass
• Length: 24 inches
• Diameter: 3/16 inch
• Maximum Pressure Rating: 3000 pounds per square inch
• Quantity: Single
• Weight: 0.66 pounds
• Category: Boat Trailer Brakes

Frequently Asked Questions

What size is the Dexter K71-G00-40 brake line? It measures 3/16 inch in diameter by 24 inches in length, sized for trailer brake system connections.

What material is the K71-G00-40 brake line made of? Brass. The brass construction resists corrosion in wet, road-salt, and marine trailer environments better than an unprotected steel line.

How much pressure can this brake line handle? Up to 3000 pounds per square inch, which is well above the operating pressure of a typical trailer hydraulic brake system.

Is the Dexter K71-G00-40 a rigid or flexible brake line? Flexible. It is designed to connect rigid brake line runs to an axle or hub assembly that moves with suspension travel, where a rigid line would crack over time.

How much does the K71-G00-40 brake line weigh? 0.66 pounds.

How many brake lines come in the K71-G00-40 kit? One. It is packaged and sold as a single flexible brake line, not a multi-pack.

What is the K71-G00-40 brake line used for? It is used as a flexible hydraulic connector in trailer brake systems, commonly on boat and utility trailers, linking the frame-mounted brake line to the axle or hub.

Will this brake line fit any trailer brake system? The Dexter K71-G00-40 is a 3/16 inch by 24 inch brass flexible line intended for standard trailer hydraulic brake plumbing; confirm your existing line diameter and length match before ordering.

Does the brass construction affect brake line durability? Yes. Brass resists the corrosion and pitting that a plain steel line develops from road salt and water exposure, which helps the K71-G00-40 maintain a reliable seal over time.

Can the K71-G00-40 replace a cracked or leaking flexible brake line? Yes, it is designed as a direct flexible brake line replacement for trailer brake systems using a 3/16 inch by 24 inch line.