Old issue but cant find on my serial number on 2004 xc70 but found dont need it.
I found correct parts by visually looking at them

 

the serial number is usually on a sticker on the timing belt cover, and is also stamped into the block on the firewall side of the #1 cylinder.

No magic to decoding VINs, there's plenty of online decoders. Your engine code is the 6/7th values - a 59 maps to a B5254T2 - and your car's serial number (for part number breaks is the last 5 digits

Here's a WIKI on the VIN

https://en.wikibooks.org/wiki/Vehicl...olvo/VIN_Codes

There are similar decoders for the other build plates for things like getting the paint code etc.