Aluminium Alloy Weld On Filler Neck And Knurled Cap 2″ OD. Automotive / Aerospace-quality Aluminium Weld On Filler neck and cap. Neck to cap rubber O ring included. For custom tanks splash bowls bottles etc. Or direct to hose. Fuel Oil Tank /Fuel Surge Tank Water Tank Radiator Coolant Cooler <span id=”sceditor-end-marker” class=”sceditor-selection sceditor-ignore” style=”line-height: 0; display: none;”> </span><span id=”sceditor-start-marker” class=”sceditor-selection sceditor-ignore” style=”line-height: 0; display: none;”> </span>.For use with fuel systems & any other applications.<br>