Sounds a bit lock rod knock? At the same time from my experience when the water pumps start going bad on Subarus it sounds 1:1 like rod knock. Please get your timing belt and water pump looked at.
Reviews of OEM Subaru water pump
17 votes
Trust me, I've been through that mistake before. Definitely replace it & definitely go with genuine Subaru water pump not a kit pump.
Price for the belt + pump kit looks perhaps a little high, but as others have said, you pay more for the convenience of warranty on the service. BUT I would hope for that price it is a genuine or reputable kit, especially the water pump. I just had to replace my non genuine water pump after about 5000km due to a bad bearing, which was not at all worth the price difference for just going genuine to start with.
I was a Subaru Dealer trained engine specialist for many years, DO NOT under any circumstances use a non Subaru water pump. All of the aftermarket ones are complete shit, I have lost count of how many aftermarket water pumps I have had to replace because they have all failed within 20k miles.
I went through two in my 06 Impreza across 326,000km ....
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What we know about OEM Subaru water pump
The brand is registered in Japan.
In March 2026, PartReview does not yet have a formed opinion of OEM Subaru water pump. This part is not in the ranking due to insufficient reviews. You can help by adding a review for OEM Subaru water pump.
Currently there are 5 reviews and 17 votes. Average rating — 2.6 out of 5. Vote balance: 7 up, 10 down.
Users also evaluated the qualities of OEM Subaru water pump:
- Leaks - coolant traces around the pump or from the weep hole - rated ambivalently. 3 points out of 5.
- Noise - whine or growl coming from the pump area - rated negatively. 2 points out of 5.
- Overheating - temperature rises, especially with the a/c on - rated negatively. 1 point out of 5.
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