The first big improvement is that the probe is leak proof. The AVI design could leak where it mates to the valve plunger making a mess. The new design incorporates an O-ring seal around the valve body preventing leaks. The O-ring also locks the probe to the valve body. The second improvement is the compactness of the probe. It is actually shorter than the BJ 107B making it easier to install.
Nylon and Aluminum Construction
High Strength and rust proof
Replacable O-Ring Seal
1/2" ID Hose Connection
Valve this attaches to has 5/8-18 threads and fits the drain holes of most Teledyne Continental engines
Piper P/N: 481-359
Beechcraft P/N: 107-B
Auto Valve Inc. AVI-BJ-107B
Note:**Suitable for PA28R-201, PA28R-201T and others having close clearance issues between the AVI valve and engine mount tubes.