Mishimoto 32mm Aluminum CNC Fill Neck - MMFN-S 1987 Isuzu Impulse Base chances are the stock radiator

chances are the stock radiator hoses are beginning to show some wear

4 Liter F1CJA

resulting in a direct-fit replacement that is easy to install

2016+ MMAI-CIV-16RD

Mishimoto 32mm Aluminum CNC Fill Neck - MMFN-S 1987 Isuzu Impulse Base chances are the stock radiatorIf 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. Universal Fitment