Need to replace Gas Water pump, not the HV, on 2007 Prius. How?

I did my wife's '06 late last year. Its not overly difficult if you have turned wrenches before. You really don't even need to get under the car. I recommend changing the serpentine belt, Thermostat and the Idler pulley as well. All of these parts can be purchased at rockauto.com for less than $100. You will also need a few gallons of SLLC coolant from Toyota or the Zerex Asian formula for half the price, which by my research is similar if not the exact same thing. Valvoline (Ashland) makes SLLC for Toyota and ZEREX Asian.

 

I have yet to see a failed Prius thermostat or belt idler pulley. I also doubt SLLC and ZEREX Asian are the same thing and see no point in not using SLLC. I would suggest you buy a $15 subscription to TIS and study the procedure and then decide if you feel comfortable doing it. You can download or print the info for use later on.

 

Verbal, What is your mileage ?

 

Good question. Seems he just missed the warranty.

 

Yeah, Just knockout the water-pump and Serpentine belt. I assumed you had higher mileage.

 

While I did change my stat. and idler pulley at more than double the mileage of the OP. I'm sure the stat was fine but I did not want my wife finding out on the side of the road somewhere that it wasn't. Then my father and father in law upon finding out would probably tell me: son I always told you to change the stat when you change the pump...yes sir! The pulley on the other hand had some wear to it and the bearing was just a tad grabby, it just didn't feel right, I consider that failed. It can and does happen but i'm sure that based on the OP's current mileage he was fine. The biggest surprise to me was the size of the water pump, man that thing is tiny.