EPMAN Aluminum Upper Coolant Housing With Filler Neck 16AN Fitting For Honda Civic EG EK B16/B18C5S (Type R) Engine EPCHB16FApplication:For Honda Civic EK EG  Type R Civic DC2 Si CRXFor B16 HeadsFor B18C5(Type R) HeadsFeatures:Material: AluminumColour: SilverItems Included: Mounting Hardware, O-RingType: Coolant HousingMounting Style: Bolt-On16OR (O-Ring) Outlet and a -12OR (O-Ring) Filler InletNOTE: Radiator Cap is not included.Package:1set Coolant Housing  （same as the picture）The B16/B18C5 (Type R) Upper Coolant Housing offers a versatility you won't get anywhere else.Begin with selecting a basic setup or setup with optional filler.Next you can select the inlet style/size being used whether its standard silicone hoses or -AN fittings.On the filler neck option the filler neck and overflow swivel and allow you to point the overflow fitting in any direction to allow clean and simple setup.