Replaces AF2153R for 70, 720 and can be used on 80, 820 and 830 if you modify the fuel line. This is the very same valve as others offer, but ours has a Viton seal for resistance to gasoline. 
The stem on the valve is slightly smaller than the original valve (other places won't tell you that) but will still fit. Eventually, we plan to offer the universal joints to match the stem correctly. 
Appearance may vary on the valve body, depending on what batch the manufacturer sends. Dimensionally everything is the same.