Educate me on Gates belts part numbers

[Billccm]

I've downloaded a variety of Gates belts charts and they are not straightforward when it comes to deciphering part numbers. I may want to get a belt that is shorter or smaller in diameter than what I have now

So, the belt I have now is labelled

11A1625. 7640

So, if I want the next shorter belt what part number should I be looking for or determine availability?

Thanks for the help.

 

[twinscrew698]

That would be a 64 inch belt Automotive XL V-Belts | Gates Corporation
so if you want shorter you would ask for a 7630 Automotive XL V-Belts | Gates Corporation
Dayco would be 15640 https://www.daycoaftermarket.com/en/catalog/?a=5&daycopart=15640
63 inch Web Catalog

 

[69Bee]

https://resources.kamanmarketing.co...ates-belt-number-and-identification-chart.pdf

 

[twinscrew698]

https://resources.kamanmarketing.co...ates-belt-number-and-identification-chart.pdf

Thats even better yet!