We at DVW  Really liked their Catalog // everything was placed in concise
order the way it should be //  example
Type II Bus  1972-79 Standard Main Bearings # 021 198 481A
Imfo for you all //  The 198  in the above middle 3 didget number designates
engine and some fuel parts it can be 101,105,109,115,198 etc.
200 -299 middle series ~Exhaust
300- 399~ Transmissiom
400- 499 ~Steering & Suspension
500-599  ~ Bearings / some drivetrain
600-699  ~ Brakes & hydl.
700-799  ~ Cables
800-899  ~  doorhandles ,seals ,Body Related
900_999  ~ Ignition,switches,sensors ,relays electrical
This covers most of the Vw air & watercooled  application numbers
Have a nice day !!
Don at DVW
Online Catalog    www.dvwimportautoparts.com
814-266-9335