I just swapped out an old WIX hydraulic filter for a Bobcat filter and I determined the currently listed WIX filter from their website is a replacement for the original Bobcat filter spec. That has since changed and the new filter is much longer. So the WIX is not the correct one. It does not appear that WIX knows Bobcat has changed the filter spec as the old Bobcat filter number is also listed on the WIX website. This is for a 843B.