What would you cross reference with a John Deere belt GX 20006?

I need more information to understand what you're looking for. "Cross referencing" a belt typically means finding a compatible belt from a different manufacturer, or finding the correct belt for a specific piece of equipment.

To help me understand your request, please provide me with the following details:

* What piece of equipment are you using the belt for? (e.g., tractor, mower, lawnmower)

* What is the model of the equipment? (e.g., John Deere 1025R, John Deere LA115)

* What type of belt is it? (e.g., deck belt, drive belt, PTO belt)

* What are you looking for? (e.g., a compatible belt from a different brand, the correct belt for a specific model, a belt with similar dimensions)

Once you provide me with this information, I can give you a more accurate and helpful response.