Yep, those are the ones. Now don't go buying 10 of them if you don't need them. You can probably get one from your local mower shop for around $5.00 and not have to wait two weeks. Once you have your blower in hand, look at the base of the existing purge pump and it should have two locking fingers and one locator/alignment tab. Squeeze the two fingers together and remove the base. Take that to the mower shop with you and have them match it from there.
Good luck.