Filler Necks

Machined aluminum fill cap. Integragted vent with roll-over protection. O-ring included.

Moroso Weld-On Filler Neck - Billet Aluminum

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...

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...

Koyo 08-15 Subaru WRX/STI / 05-09 Legacy GT 13mm Coolant Reservoir Adapter (For Part# VH091662)

Koyo 08-15 Subaru WRX/STI 8mm Coolant Reservoir Adapter (For Part# VH091662)

Koyo 06-11 Honda Civic Aluminum Filler Neck