I was getting a ton of noise from my idler pulley . I pulled it off and have done extensive searching for a pulley replacement. Needless to say I couldn't find the pulley complete with bearings . There is a NSK Bearing Part # on the inside of the pulley. NSK b17-102dg3 . I am calling a bearing company tommorow by my house to see if they can point me in the right direction. My question is , has anyone done this yet? I did a search and only found one post containing the word NSK . There wasn't much info there. i heard some bearings cannot be taken out of pulleys. Is our idler pulley for the m45 one of these cases? or am I going to be able to press or knock it out.? Any help is much appreciated... Hopefully this post will be useful to someone else in the future if they do a search because there wasn't much there on the subject.






Windy City TurboZ

I will update the post with my findings tommorow.


Windy City TurboZ

should be a 6203 bearing

the 6203 is used in every other GM idler out there accually i think they all use them

i have stock of them here even the INA newer style that are 14mm think insted of 12 which come in handy on 2.2 tensioners.

i can replace them if there metal plastic can't be replaced as bearings molded in as for the GM sc kit i have no clue why they would use a different pully, what size is it?? if its a 3" try a 3800 tensioner pully and see if it clears



JBO since July 30, 2001

I will look into the 6203 further Matt , Thanks for the information. The pulley is metal and it is roughly 2" diameter X 1" wide .


Windy City TurboZ

http://www.wagneralt.com/catalog/books/W2008-02.pdf

There's the file for the replacement bearing on page 28 of the pdf file.
It's a Wagner part that should be available from Wagner.
Here's the Wagner part number: W02x-11

This should be the exact replacement by Wagner for the M45 supercharger pulley bearing.
Yeah I know old thread but receiving my idler assembly today for my M45 install next Spring prompted me to do some research on replacement parts for the setup.

Hope this helps.



Misnblu.com
Newbie member since 1999
Thank you Dave and JBO!

I am going to order this part as well.. however, I can not find a place to order it online. Has anyone had to order this yet? I actually have the OP's car now, and he has replaced it and its going bad again. So I am wanting to replace it and cannot find an NSK dealer around me, and Wagneralt.com doesnt have an online ordering system and the bearing is squealing. So is there a place to order a replacement bearing online?


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