Water pump OEM Toyota or GRAF

PartReview Score

Rank #7 in ranking

3.6

Leaks

2.2

Noise

4.0

Overheating

2.8

No data

PR Score

Ranking

Votes

Reviews

Average rating

Properties

Car

PartReview Score

Rank #2 in ranking

3.5

Leaks

3.0

Noise

3.6

Overheating

4.2

Owners' choice:

Reviews

All

OEM Toyota

GRAF

OEM Toyota › Water pump

IvyLeagueImage 28 Dec 2025, 22:01

Overheating:

Rating 5.0

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.

Pros: engine would work well

Cons: overheating probs

OEM Toyota › Water pump

xxrancid13xx 17 Dec 2025, 00:42

Leaks:

Rating 5.0

My original lasted 18 years / 249k miles. The replacement one has been in place for almost 2 years / 22k miles.

Pros: long lasting, reliable

Vehicle: Toyota Prius

Mileage: 434523 km

GRAF › Water pump

Electronic_Nail_7433 4 Dec 2025, 02:21

Leaks:
Noise:
Overheating:

Rating 4.0

Graf here. 15k miles/ 2 years, no problems.

Pros: no problems

Mileage: 24140 km

GRAF › Water pump

Eric D 28 Nov 2025, 05:40

Overheating:

Rating 5.0

I use on my 12v and 24v VR6 engines, Eurowise aluminum thermostat housing and 42DD stainless steel crack pipe. Water pump I use GRAF or Hepu for its metal impeller.

Pros: metal impeller

OEM Toyota › Water pump

TedMich23 13 Nov 2025, 22:01

Rating 4.0

My 99 V6 just rolled 316k, am looking into my 2nd timing belt/water pump DIY

Pros: long-lasting engine

Cons: requires maintenance

Vehicle: Toyota Camry

Mileage: 316000 km

OEM Toyota › Water pump

L-Sin 23 Oct 2025, 14:09

Leaks:

Rating 5.0

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.

Pros: replace with factory parts

Vehicle: Toyota Camry

OEM Toyota › Water pump

logbiter 17 Dec 2025, 12:50

Overheating:

Rating 3.0

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

Pros: peace of mind

Cons: failure at 165k

Vehicle: Toyota Prius

Mileage: 265549 km

GRAF › Water pump

rns96 16 Dec 2025, 03:36

Leaks:

Rating 1.0

what I had problems with is with Graf water pump, that was included as part of FCP euro cooling system kit, water pump seal around the bearing started pouring coolant like a waterfall after only 11k miles, I replaced it with a Stewart pump

Cons: seal started pouring coolant

Mileage: 11000 km

OEM Toyota › Water pump

Caliguta 29 Sep 2025, 13:33

Overheating:

Rating 1.0

I had my issues with the 2nd gen (water pump failure)

Cons: water pump failure

Vehicle: Toyota

GRAF › Water pump

godoftopo12 27 Jun 2025, 14:05

Leaks:

Rating 1.0

the metal fins are spot welded like shit on these cheap metal waterpumps. my graf pump also started to leak from the weep hole after a year too

Cons: poor spot welds, leaked after year

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Show all

Which water pump to choose — OEM Toyota or GRAF?

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:

Comparison of water pump OEM Toyota and GRAF

PR Score.
Overall ranking.
Vote balance.
Average rating.
Number of reviews.
Feature ratings.
Car owners’ choice.

Which water pump are better — GRAF or OEM Toyota?

In March 2026 on PartReview, water pump GRAF were overall better than OEM Toyota.

OEM Toyota received a PR Score of 70 out of 100, and GRAF scored 70 points.
OEM Toyota ranked 7 in the overall ranking, and GRAF ranked 2.
The average rating is higher for OEM Toyota (3.6) than for GRAF (3.5).
Water pump OEM Toyota have better feature ratings than GRAF:
- Noise - owners believe, that this property for OEM Toyota is better than GRAF.
- Leaks - drivers claim, that this property for GRAF is outperforms OEM Toyota.
- Overheating - reviews suggest, that this property for GRAF is preferred to OEM Toyota.

Which water pump are more popular — OEM Toyota or GRAF?

In March 2026 on PartReview, water pump GRAF were overall more popular than OEM Toyota.

By vote balance, water pump GRAF surpassed OEM Toyota:

For OEM Toyota, the ratio of positive (36) to negative (15) votes is 21 vote.
For GRAF, the ratio of positive (146) to negative (62) votes is 84 votes.

By number of reviews, water pump GRAF surpassed OEM Toyota:

For water pump OEM Toyota there are 16 reviews: 10 positive, 3 neutral, 3 negative.
For water pump GRAF there are 68 reviews: 46 positive, 4 neutral, 18 negative.

Which water pump do car owners prefer — OEM Toyota or GRAF?

In March 2026, according to PartReview, water pump GRAF led more car-specific ratings than OEM Toyota:

GRAF are chosen by owners of cars such as: Volkswagen Jetta, Volkswagen Tiguan, 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.

Other comparisons of water pump

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, AISIN, Gates, Hepu, Pierburg, OEM FORD, OEM BMW, GMB, Saleri.

Also available: comparisons of water pump GRAF with: OEM Volkswagen, OEM Audi, AISIN, Gates, Hepu, 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.