Replace water pump. 100% oem or aisin.
Pros: 100% oem or aisin
Reviews of AISIN water pump
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Use a good pump like a Aisin, cause you don’t want to do it again in a year.
Pros: good pump, avoid redoing
Cons: potential future failure
When I bought Aisin water pumps for some of my other Toyota/Lexus vehicles, the embossed Toyota emblem on the pump would be ground off.
Pros: OEM equivalent quality
Get the Aisin one off rockauto, I just replaced mine with it.
You can save yourself some time and money by buying the Aisin water pump / timing belt kit on RockAuto. Don’t mess around with other ones. The parts are all the same OEM you’d get from Subaru at a fraction of the cost, except for the pump itself — but that’s a good thing because while Aisin didn’t make the pump for these, they were an OE pump maker for Subaru and the company that made the OE one for that generation (Gates) has apparently started producing crap. I don’t think Subaru even uses them anymore for their OEM pump.
Pros: OEM quality, fraction of cost
Cons: Gates producing crap
Vehicle:
Subaru
Like others have suggested, either get an OEM or Aisin water pump or be prepared to make this an annual event.
Cons: annual event
Vehicle:
Subaru Outback
You should use Aisin or OEM water pumps.
When I do side jobs I use an aisin branded water pump and timing belt tensioner. The aisin kit is top notch.
Pros: top notch
The inverter water pump is a fairly common failure on the second gen Prius. The pump runs anytime the car is on, and it just wears out.
Pros: common failure
Cons: wears out
Vehicle:
Toyota Prius
My 1 year, \~6K miles Aisin WPT-108 pump failure story:
I have a 4A-FE Corolla E11. Changed timing belt, auxiliary belts, tensioner+spring, the whole lot last summer. The waterpump (Aisin WPT-108) was from a reputable online shop here in Europe (Autodoc). Last week I come to find the new pump dripping from the lower weep hole, so its the whole timing belt job all over again pretty much. No wierd bearing sounds. I did 6K miles last year if that.
Pros: smooth bearings
Cons: pump failure, dripping
Vehicle:
Toyota Corolla
Mileage: 9656 km
Part number: WPT-108
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