New Holland MT40344260 is the water pump assy Clinton Tractor supplies for this application. It is listed as fitting 7 New Holland models.
What MT40344260 fits
Fits: New Holland BOOMER-40, New Holland BOOMER-45, New Holland BOOMER-50, New Holland BOOMER-55, New Holland BOOMER-35 + 2 more. Commonly ordered for the WORKMASTER-40C, BOOMER-35, BOOMER-40. If your machine isn't listed, check the serial number before ordering.
Which numbers it replaces
MT40344260 replaces MT40265701, MT40366730. If your parts manual or the old box shows any of those numbers, this is the correct current replacement — no fitment change.






