Vibrant Performance 20980 Weld-On Radiator Filler Neck with Cap, 1.25-Inch ID

The Vibrant Performance 20980 weld-on radiator filler neck provides a reliable solution for fabricating or repairing custom cooling systems. Designed with a 1.25-inch inside diameter, this filler neck supports compatibility with a wide range of radiator and expansion tank applications while offering a clean, professional installation for performance vehicles, race cars, off-road vehicles, and custom builds.
Constructed from lightweight aluminum with a natural finish, the Vibrant Performance 20980 is built for durability and dependable service in demanding engine compartments. Its weld-on design allows the neck to be securely integrated into a radiator, surge tank, or other cooling-system component, helping create a strong and properly sealed connection when installed by a qualified fabricator.
The cap-style filler neck includes a 1/16-inch NPT port for connecting an auxiliary line, sensor, or other compatible plumbing component. A 5/16-inch hose barb fitting is included, making it easier to configure the filler neck for the needs of your cooling system. The universal design provides flexibility for custom applications, and the included cap helps keep the fill point protected during operation. Choose the Vibrant Performance 20980 for a practical, adaptable filler neck solution designed for custom cooling-system fabrication.

Features:

• Brand: Vibrant Performance

• Part Number: 20980

• Application: Universal weld-on radiator and cooling-system filler neck

• Design: Cap-style filler neck for custom fabrication

• Inlet Size: 1.25-inch inside diameter

• Port: 1/16-inch NPT connection

• Included Fitting: 5/16-inch hose barb

• Material: Aluminum

• Finish: Natural aluminum

• Installation: Weld-on

• Package Contents: Filler neck, cap, and hose barb fitting