I have 4 pro blasters on my boat and 2 pressure switches have failed after a few years. I ordered this part and repaired one of them. However, when replacing the pressure housing and switch, I found that it is not necessary to change the entire housing. Only the micro switch in the housing. So for the second pump I ordered a microswitch (Omron #V-15-2C26-K) from Digikey for $2.50 plus $2.60 shipping and the problem was solved. You don't have to replace the entire switch body. There are 6 screws on the bottom of the case holding this micro switch. Replace the micro switch and it works great now. No need to buy any apartments. Also, this case has zinc screws and exposed wire connections, while my original was stainless steel and had no exposed connections. I only run in salt water and we all know how zinc steel holds up in that environment (it isn't). So if you have stainless steel screws and exposed wire connections, it's definitely better to just replace the micro switch. $5 repair instead of a brand new pump. steve
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