2nd port can also be used for a temp gauge sending unit. Hose Adapter.
DUAL 12 INCH 90W ELECTRIC FAN 38MM RADIATOR HOSE ADAPTER TEMP-ERATURE SWITCH KIT
DUAL 12 INCH 180W ELECTRIC FAN 38MM RADIATOR HOSE ADAPTER THERMO-STAT SWITCH KIT
US 1-1/2'' 38mm Hose Aluminum In Line Radiator Hose FILLER NECK 1.1Bar Cap ALLOY
HOSE ALUMINUM IN LINE RADIATOR HOSE FILLER NECK W/CAP 38mm 1-1/2''
HOSE IN LINE RADIATOR HOSE FILLER NECK 1.1BAR CAP 1-1/2'' 38mm
US 1-1/2'' 38mm Hose Aluminum In Line Radiator Hose FILLER NECK 1.1Bar Cap.
