Fitting 3/8inTube to 3/8in Barb

The Fitting 3/8in Tube to 3/8in Barb from DERALE is a precision hose adapter engineered for custom automotive cooling and fluid transfer systems. Whether you're fabricating a custom radiator bypass loop, upgrading your engine's coolant circulation, or integrating aftermarket transmission coolers, this fitting serves as a critical junction point in pressurized fluid systems. Mechanics and enthusiasts rely on quality adapters like this to ensure leak-free connections and reliable performance during high-temperature or high-pressure operation.

This adapter bridges a 3/8-inch rigid tube to a 3/8-inch barbed hose inlet, allowing seamless integration between hard plumbing and flexible silicone or reinforced rubber hose sections. The barb design creates a mechanical grip when the hose is forced over the fitting, preventing blowoff under pressure while minimizing the need for excessive hose clamps that can restrict flow or damage tubing. DERALE's design focuses on reliable seal integrity, making it ideal for modified cooling systems, custom water-cooling builds, and OEM component replacements in street, racing, and off-road applications where durability is non-negotiable.

This fitting is essential for anyone custom-fabricating or modifying engine cooling systems, transmission coolers, or oil cooler circuits. Installation is straightforward—insert the barbed end into your 3/8-inch hose with a light twisting motion, and secure with a stainless steel hose clamp. Its compact profile (2.75 x 1.35 x 3.55 inches) ensures it fits tight engine bays and complex routing scenarios. Compatible with standard silicone hose and most automotive-grade rubber tubing, it's a must-have component for serious engine builders, performance enthusiasts, and professional mechanics handling custom cooling solutions.