My Account
If you are already registered, please log in.
Create your account and enjoy a new shopping experience.
Create A New Account
If you manufacture your own aluminum radiator, the Mishimoto Aluminum Coolant Fill Neck is a must-have. The Mishimoto Aluminum Coolant Fill Necks are CNC machined and ready to be welded for use with your custom project. These Aluminum Fill Necks are compatible with our Mishimoto Radiator Caps.
The large Mishimoto CNC machined Aluminum Fill Neck is 42mm and includes a screw-in nipple for overflow.
The small Mishimoto CNC machined Aluminum Fill Neck is 32mm and also include a screw-in nipple for overflow.
