Coolant Fill Necks

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 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...

Koyo 08-15 Mitsubishi Evolution X Aluminum Filler Neck

Koyo 2022 Toyota GR86/ Subaru BRZ Aluminum Filler Neck

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

Moroso Weld-On Filler Neck - Stamped Aluminum

Moroso Weld-On Filler Neck - SAE Type B - Billet Aluminum

Moroso Inline Extended Filler Neck 1.5in In / 1.25in Out

Moroso Inline Extended Filler Neck 1.5in In/Out

Moroso Chevrolet Big Block/Small Block Water Outlet Filler Neck -20An w/O-Ring & Two 3/8in NPT Ports

Moroso Chevrolet Big Block/Small Block Water Outlet Filler Neck -16An w/O-Ring & Two 3/8in NPT Ports

Moroso Chevrolet Big Block/Small Block Water Outlet Filler Neck -16An w/O-Ring - Aluminum

Moroso Chevrolet Big Block/Small Block Extended Water Filler Neck

Moroso Inline Extended Filler Neck 1.25in In/Out

Moroso Chevrolet Bolt-On Filler Neck - Billet Aluminum - Black