Hello all my name is Lee, I have a 1998 Mitsubishi GTO SR.
Hi, im looking to replace my top idler pulley and the lower tensioner pulley (aux belt). I was going to buy the one from the shop here, but that part looks like the top pull on my GTO (its listed for the bottom).
Thanks for the info. Ive ordered the 2 pullies now. There looks like 3 parts to the lower pully though on that image, the bolt and a circular fitment. Hopefully I can reuse that part as the one I ordered just looked like the main pully. Thanks
That is the idler pulley which has been wrongly labelled. The tensioner is 104mm I believe. I would be shocked if this came from Japan. It may have a koyo bearing inside but I am pretty sure the it was manufactured in China where they use the wrong part number and identification for this part. The quality is ok though. It is also the same size as the one that I sell on my site but mine has the protective coating. If anyone else can show me wrong, please message on this post so everyone knows.
Now I am completely confused. I just checked 4 separate engines and 2 have the 90mm bearing fitted in the tensioner position and 2 have the 104mm fitted in the tensioner position. I am 99% sure that it should be 104mm but if anyone can give 100% proof of which one it should be, could you please share it.
The lower tensioner pulley is smaller (and out of production) than the upper idler pulley. A gates 36192 can be used for the lower tensioner pulley but requires the use of a shorter bolt. The oem pulley used a circular cover to protect the bearing but the gates replacement does not need this nor would the cover fit anyway.
If you have, l think its a no brainer. Since one of my cars are in europe l ordered from Autodoc and l myself was surprised that the SKF box said made in Japan and the koyo code was stamped on them. I ordered a second one as a spare which again was made in Japan but with a different koyo number even though the skf no was the same. See pictures.
