Koyo Radiator Filler Neck for HONDA CIVIC 06-11

Direct replacement for the plastic OEM unit using the OEM hose and clamp
€¢ Billet aluminum neck eliminates steam erosion and cracking common with plastic filler necks
€¢ Retrofits radiator cap style to the more robust "deep plunger" type - Koyorad # SK-C13 (not included, available in our store) or equivalent radiator cap