I used the same kit on my tl and the water pump started leaking 2 years in.
Cons: water pump started leaking
Reviews of AISIN water pump
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201 vote
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I went with a aisin kit and at the 2 year mark the water pump went.
Cons: water pump failure
When I drove a Volvo I just did a belt and water pump every year. OE Aisin one every time.
Pros: OE Aisin
Vehicle:
Volvo
Aisin is what my shop used when mine started to die at 140k. No problems so far at 150k
Pros: no problems so far
Mileage: 150000 km
Go for Aisin, Toyota just repackages same pump so skip the brand tax.
Pros: skip the brand tax
Vehicle:
Lexus
Aisin pump $67 on rockauto. I know they make a ton of Toyota OEM water pumps, not sure about this specific model.
Pros: OEM water pumps
Vehicle:
Toyota
The Aisin kits are fine. I would not use a gates kit; the water pumps are junk and so are the tensioners
Pros: Aisin kits are fine
Cons: water pumps are junk
I'd swap them out for multi-layer steel gaskets and new head bolts. Given the engine is in good order and hasn't had a gasket failure yet I'd say you'd be fine skipping the head decking and just install the new gaskets after a good cleaning.
Pros: good order, easy cleaning
Vehicle:
Subaru
Aisin is the maker of Toyota water pumps.
Pros: Toyota water pumps maker
I have only got my AISIN water pumps when ordering timbing belt replacement kits which include a new water pump, but they always came with a quality seal for the pump.
Pros: quality seal included
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What we know about AISIN water pump
The brand is registered in Japan. Official website: https://www.be.aisin-europe.com.
In March 2026, PartReview users have a positive opinion of AISIN water pump.
PR Score — 79 out of 100, based on 66 reviews and 201 vote. 51 positive review, 3 neutral reviews, 12 negative reviews. Average rating — 4 (out of 5). Vote balance: 159 up, 42 down.
In the ranking of the best water pump this part is at position 1 ahead of GRAF and Hepu.
Users also evaluated the qualities of AISIN water pump:
- Leaks - coolant traces around the pump or from the weep hole - rated ambivalently. 3.3 points out of 5.
- Noise - whine or growl coming from the pump area - rated ambivalently. 3.2 points out of 5.
- Overheating - temperature rises, especially with the a/c on - rated positively. 3.6 points out of 5.
Water pump AISIN in car-specific ratings
See which car brands and models owners choose AISIN water pump for. Below are car-specific ratings where this part is in the Top-3:
- AISIN ranked #1 in water pump ratings for: Toyota 4runner .
Water pump AISIN in comparisons
There are 11 comparisons of AISIN water pump with other manufacturers on PartReview.
In particular, see which water pump are better: AISIN or OEM Toyota, AISIN or GMB, AISIN or Saleri, AISIN or OEM Volkswagen, AISIN or Pierburg .