New Holland 47378990 is the idler wheel Clinton Tractor supplies for this application. It is listed as fitting 18 New Holland models.
What 47378990 fits
Fits: New Holland C234, New Holland C238, New Holland C334, New Holland C337, New Holland C338 + 13 more. Commonly ordered for the C238, C227, C232. If your machine isn't listed, check the serial number before ordering.
Which numbers it replaces
47378990 supersedes 87447229. If your parts manual or the old box shows any of those numbers, this is the correct current replacement — no fitment change.
Specifications at a glance
This idler wheel measures 350 mm OD. The full attribute list is in the Specifications section above.

















