The Ace Race Parts brand of Weld On Radiator Filler Necks are precision CNC machined from solid 6061 Aluminum billet and feature a barbed nipple. Our Radiator Filler Necks are offered in two sizes to accommodate common Import and Domestic sized OEM radiators, as well as allowing for use in custom radiator setups.
- 6061-T6 Aluminum
- Precision CNC Machining
- Includes Barbed Nipple for Expansion Tank Plumbing
Please note: Radium Engineering (Type A and B) radiator caps are not compatible with this filler neck.