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I wish I knew myself before my overheating probs with the failed first gen water pumps from toyota. Once the new pump was in the engine would work really well when it comes to heating and cooling.
My original lasted 18 years / 249k miles. The replacement one has been in place for almost 2 years / 22k miles.
My 99 V6 just rolled 316k, am looking into my 2nd timing belt/water pump DIY
Graf & Hepu brand water pumps are both metal impeller high quality oem suppliers
Engine water pump is leaking coolant. The pulley and drive belt are slinging the coolant onto other components. Highly recommend to replace with factory parts.
Mine started going out at ~165k in 2023. 05 Prius. I mostly drive less 5miles at a shot, and it would toss a code if driven much more than that and it was hot
My Tundra was awesome, but guzzled fuel and I drive like an old grandpa. 13-14 mpg is expected. Also, Tundras are fairly expensive to maintain compared to Ford. My water pump went out and it was about $1k to get fixed.
I am dealing with a similar issue right now on my CJAA which I changed the timing belt in April this year. Leaking from same spot. Hepu waterpump.
I had my issues with the 2nd gen (water pump failure)
a Hepu which went seven years/60,000 miles before it started leaking. I think the additional mass of the metal impeller put more stress on the bearing and seal.
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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 Hepu were overall better than OEM Toyota.
In March 2026 on PartReview, water pump Hepu were overall more popular than OEM Toyota.
By vote balance, water pump Hepu surpassed OEM Toyota:
By number of reviews, water pump Hepu surpassed OEM Toyota:
In March 2026, according to PartReview, water pump Hepu led more car-specific ratings than OEM Toyota:
Hepu are chosen by owners of cars such as: Volkswagen Phaeton, and others.
Water pump OEM Toyota 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 OEM Toyota with: OEM Volkswagen, OEM Audi, GRAF, AISIN, Gates, Pierburg, OEM FORD, OEM BMW, GMB, Saleri.
Also available: comparisons of water pump Hepu with: OEM Volkswagen, OEM Audi, GRAF, AISIN, Gates, Pierburg, OEM FORD, OEM BMW, 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.