Universal 1-Inch (25mm) 90-Degree Aluminum Radiator Hose Filler Neck With Cap | Inline Coolant Fill Port

Working on a custom cooling system or need a better way to fill your radiator? This aluminum filler neck is a super handy piece of kit. It's designed to be spliced right into your upper radiator hose (the one that's usually 1 inch or 25mm in diameter). It has a 90-degree angle, which helps it fit in tight engine bays. Why add it? It gives you a dedicated, easy-to-access fill port for your coolant, which helps get all the air out of the system for better cooling performance. It's made from high-quality aluminum and comes with a textured silver powder coat finish. It also includes a standard 1.1 bar (roughly 16 psi) radiator pressure cap. The hose connectors are about 110mm long, giving you plenty to clamp onto. Whether you're building a hot rod, fixing up an old car, or just improving your daily driver's cooling system, this is a simple and effective upgrade. Just cut your hose, clamp this in, and you're done.