New in box OE arctic cat fuel tank, this fits the 01-03 Mtn cat 800 carb for sure and I think fits the 600 and 900 of the same years, this is for the CARB not the EFI as it has no Fuel pump opening for the EFI. Selling for a friend PM me for contact info,, $150.00 plus shipping (guess about $30.00):beer;