Koyo 06-11 Honda Civic Aluminum Filler Neck - FN2313

Must Use SK-C13 or equilvalent deep plunger cap

Koyo 13-16 Scion FR-S / Subaru BRZ Aluminum Filler Neck - FN2320

Koyo 13-16 Scion FR-S / Subaru BRZ Aluminum Filler Neck

Mishimoto 08-15 Mitsubishi Lancer Evo X Coolant Fill Inlet - Black - MMFN-EVO-BK

Mishimoto has been designed for higher durability using all-aluminum construction replacement, including a replacement cap. Our product is constructed and tested to ensure fitment for the OEM hoses and Mishimoto replacement silicone hoses. It is finished...

Mishimoto 08-15 Mitsubishi Lancer Evo X Coolant Fill Inlet - Red - MMFN-EVO-RD

Mishimoto has been designed for higher durability using all-aluminum construction replacement, including a replacement cap. Our product is constructed and tested to ensure fitment for the OEM hoses and Mishimoto replacement silicone hoses. It is finished...

Mishimoto 32mm Aluminum CNC Fill Neck - MMFN-S

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...

Mishimoto 42mm Aluminum CNC Fill Neck - MMFN-L

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...

Moroso Weld-On Filler Neck - Billet Aluminum - 63486

Moroso Weld-On Filler Neck - Billet Aluminum

Vibrant Weld On Radiator Filler Neck - 32mm ID (1.25in) - 20980

Vibrant Performance Radiator Filler Necks are CNC Machined from durable 6061 Aluminum Alloy. They include a barbed nipple for plumbing to an expansion tank. Available in two sizes and are compatible with Vibrant Performance high pressure Aluminum...

Vibrant Weld On Radiator Filler Neck - 42mm ID (1.65in) - 20982

Vibrant Performance Radiator Filler Necks are CNC Machined from durable 6061 Aluminum Alloy. They include a barbed nipple for plumbing to an expansion tank. Available in two sizes and are compatible with Vibrant Performance high pressure Aluminum...