Site upgrade in progress... Core site functions are working, but some non-critical features/functions will be temporarily unavailable while we work to restore them over the next couple of weeks.

Please post any bugs you encounter, but before you do, check to see if it's already listed.

Thanks for your patience while we work to improve the community.


CDI number decoding...

3 posts in this topic

i found multiple posts about cdi part numbers....but nothing that crosses the painted stamped number to year/part number.



the yamaha full part number is not on either of the 2 CDIs i have for my 450. 


Ive only got:






whats what with these things?



anyone have any idea?



Share this post

Link to post
Share on other sites

The "B0" should be an '08 YZ450F.  The 00-61G might be a late '06.


The full part number isn't generally used because any CDI unit is an 85540.  A 2S2-85540-00-00 is the base PN for an '06, and 2S2-85540-B0-00 is for an '08.  The trailing pair of characters has one of several meanings, usually indicating a minor revision of some sort on a part like this.

Share this post

Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now