WR450 starter motor compatibility

Hi All,

Can anyone tell me if the starter for an 09 WR450F is compatible with an 03 bike...

I know they have different part numbers (5TJ-81890-30 vs 5TJ-81890-20, once you take the superceeded numbers in to account), but at least one (http://stockers-ems.com/index.php?dt=YS-37&scroll=16) after market supplier lists both these OEM numbers against the same stock item, so this makes me wonder if the 09 motor would fit on an 03 bike...

Anyone know for sure before I go bidding on EBay?


All the WR450's use the same starter. Yamaha just likes to create a part number for each year.

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