When I drove a Volvo I just did a belt and water pump every year. OE Aisin one every time.
Aisin is what my shop used when mine started to die at 140k. No problems so far at 150k
It ended up being the water pump seal. They replaced the water pump and thermostat free of charge.
Go for Aisin, Toyota just repackages same pump so skip the brand tax.
Aisin pump $67 on rockauto. I know they make a ton of Toyota OEM water pumps, not sure about this specific model.
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.
Aisin is the maker of Toyota water pumps.
Electric water pump on my BMW was \u00a3436.54 fitted at a BMW specialist (not dealership) OEM pump fitted, the same pump for me to buy and fit myself (no chance) was \u00a3600+ on Euro Car Parts
I used the same kit on my tl and the water pump started leaking 2 years in.
I went with a aisin kit and at the 2 year mark the water pump went.
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If choosing water pump across many manufacturers, check the part ranking. If your choice is down to two brands, the PartReview part comparisons help.
We compare water pump across these categories:
In March 2026 on PartReview, water pump AISIN were overall better than OEM BMW.
In March 2026 on PartReview, water pump AISIN were overall more popular than OEM BMW.
By vote balance, water pump AISIN surpassed OEM BMW:
By number of reviews, water pump AISIN surpassed OEM BMW:
In March 2026, according to PartReview, water pump AISIN led more car-specific ratings than OEM BMW:
AISIN are chosen by owners of cars such as: Toyota 4runner, and others.
Water pump OEM BMW have not yet taken leading positions in car-specific ratings. You can help by adding a review and specifying your car.
If this comparison didn’t fully answer your question, there are many others on PartReview.
For example, comparisons of water pump AISIN with: OEM Volkswagen, OEM Audi, GRAF, Gates, Hepu, Pierburg, OEM FORD, OEM Toyota, GMB, Saleri.
Also available: comparisons of water pump OEM BMW with: OEM Volkswagen, OEM Audi, GRAF, Gates, Hepu, Pierburg, OEM FORD, OEM Toyota, GMB, Saleri.
You can also see who is better among other water pump manufacturers: OEM Audi or OEM Volkswagen, GRAF or OEM Volkswagen, AISIN or OEM Volkswagen, Gates or OEM Volkswagen, Hepu or OEM Volkswagen.
