The Westfalia filler on the underslung LPG tank has a standard filler fitment that can not be used in the UK. Because of the position of the filler you need a longer adaptor to clear the gas tank cover. This adaptor allows you to fill up anywhere in the UK at any LPG pump so don’t get caught out.
For Joker models but please check before buying as some of the later models can use the screw on type with the wider mouth. Don’t worry we also sell those in this section.