Bendix purge valve ?

[Geared_Cortex]

The truck has 400k but 14000 hours and it's up in Canada with all the salt in the winter . The valve cost 100$ and the unit about 400$. I bought the valve but my supposedly heavy duty pliers broke on me trying to remove the bad one . So I'm gonna return it and get the hole unit first thing in the morning. For 300$ more I guess it's worth not having to worry about that for awhile. Thanks guys