Just got my Andair Fuel Pump and Filter as part of the group buy. In looking at the installation instructions, it shows an Andair fitting BH375 penetrating the firewall. This part did not come with the kit (although it is listed in the ACS Andair pump kit - and unfortunately not sold separately). There is not a part with that part number on the Andair page but it appears to be listed on the Andair page under "Accessories/Spares" and then "Engine Fittings". It lists as 28.25 British Pounds - that's $60 US ! Does anyone know what this is (i.e. is it a check valve of some type) and would a simple firewall pass-through work instead? I contacted Chris at Andair and he said he would refer it on to the tech department - but so far no answer. Thanks!