Hi all, I often buy parts from Partzilla in the US, mainly because they will ship to me (most of the world will not) and the prices are good, not their shipping charges though they are ridiculous because of the USPS flat rate shipping option that they use. However, often they will show the part as being unavailable, but if you go to CMSNL's web site and search for the same part you will often find that there are new part numbers that supersede the old ones. For example I was looking far a cam chain tensioner gasket for my 400, part number 30X-12213-00, and this shows as not available at Partzilla http://www.partzilla.com/parts/detail/yamaha/YP-30X-12213-00-00.html But the same part at CMSNL is available and has the new part number 4FM-12213-00 http://www.cmsnl.com/products/4fm-12213-00-gaskettensioner_30x1221300/#.VKI2tMAAAE Then a search back at Partzilla finds that new part number is available http://www.partzilla.com/parts/detail/yamaha/YP-4FM-12213-00-00.html. It could also mean that the part is available locally and you might not have to deal with the "we hate grey imports" attitude at the local parts counter. Problem solved.
That cmsnl is a great place for finding the part numbers. Feel a bit guilty sometimes using their site and not buying anything, though they are a tad pricey.