Mishimoto high Performance intercooler, watercooler, oilcooler and oil-catch cans Fill Neck Mishimoto Aluminum CNC / 32mm Mishimoto high Performance intercooler, watercooler, oilcooler and oil-catch cans Features - CNC machined aluminum universal small fill neck - Ready to be welded for custom application - Aluminum fill neck fits with Mishimoto Radiator Cap - Includes screw-in nipple for overflow Tech Specs Size 32mm Material Aluminum Description 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 small Mishimoto CNC machined Aluminum Fill Neck is 32mm and includes a screw-in nipple for overflow.