Vibrant Weld On Radiator Filler Neck - 32mm ID (1.25in)

If you're building a custom cooling system for your project vehicle, you'll need a reliable way to fill and vent your radiator. This weld-on filler neck from Vibrant is designed for just that purpose. It gives you a clean, secure point to add coolant and connect a hose to an expansion tank or overflow reservoir.

This filler neck is CNC machined from 6061 aluminum alloy, making it both lightweight and durable for custom fabrication. It features a 32mm (1.25 inch) inner diameter, suitable for many common radiator hoses. The included barbed nipple is specifically for plumbing to an expansion tank, helping to manage coolant expansion and prevent air pockets in your system. It's also designed to work with Vibrant's high-pressure aluminum radiator caps, ensuring a secure seal.

Remember that this is a weld-on component, so it requires fabrication skills and equipment to install. It's a well-built piece that will integrate cleanly into your custom cooling setup.