Here are the most common replacement Weber Genesis Silver B Parts.
I strongly recommend the stainless steel Flavorizer bars over the porcelain enameled version. They are only a few bucks more and are worth every penny.
Here are a few in depth articles about the Weber Genesis Silver B parts that I hope you find useful.
Genesis Silver Ignition System Information: This link takes you to another article that helps you figure out which of the two available ignition systems is correct for your Silver B. The article also has downloadable instructions and a video which show you how to replace the ignition system.
Removing the Control Panel: If you want to access the igniter or find the serial number for your Silver then you need to remove the control panel.
Genesis Silver Burner Tube Information: If you need help figuring out how to maintain or replace your burner tubes on your Silver B then read this post. The article has downloadable instructions on how to replace the burner tubes. The article also has two videos; one show how to maintain your burner tubes and the other showing how to replace them.
Genesis Silver Flavorizer Bar Information: The Flavorizer bars are the most common replacement item on the Silver B. This article covers when replacement is needed and when a simple cleaning is sufficient. The article also gives a simple trick to make your Flavorizer bars last longer and explains why I think the best value are the aftermarket stainless steel bars.
Genesis Silver Grill Grate Information: There are three grill grate choices for the Silver B. All three of the options are fine. This article shows you the differences between the grates and gives a little background on the cast iron option.
Genesis Silver Model Changes: The Silver B went through several changes during the five years it was in production. This article provides the Owner’s manual and cookbooks that went with each of these grills.