The OEM water pump is indeed prone to failure after 100k miles and is easy to replace. It will absolutely cause the death rattle.
Pros: easy to replace
Cons: prone to failure
Mileage: 160934 km
Owner reviews for water pump
Manufacturers
Comparisons
As for pump, SKF tends to do well.
Pros: reliable performance
Vehicle:
BMW
GRAF makes this particular pump without the magnetic impeller, and it’s the best option.
Pros: best option, no magnetic impeller
Though I went for a Kolbenschmidt pump instead of genuine (Which is just a Saleri PA659S anyway) - The Kolbenschmidt is German made so I trust it.
Pros: German made, trusted quality
Vehicle:
BMW
Currently own a ‘15 S3 with 130k+ miles. Nothing really major to report for me outside of some known common issues with this generation (water pump, PODS, etc). Car has been great and honestly easy to maintain if you can DIY oil changes, brakes, and DSG fluid changes.
Pros: easy to maintain
Cons: known common issues
Vehicle:
Audi S3
Mileage: 130000 km
Generally the OEM plastic water pump only lasts as long as the timing belt interval. I wouldn't rule it out since the overflow water you might be seeing could just be water which is expanding or boiling as you increase the engine speed.
Pros: lasts timing belt interval
Cons: plastic water pump
Vehicle:
Volkswagen Golf
My water pump broke the first time 23k miles ago. Another one just went out on me. I’m 1 month past the 8 years and only at 72k miles.
Cons: broke, went out again
Mileage: 72000 km
I used a Gates kit for the timing belt change and the cheap Chinese water pump water seal failed in 2 years.
Cons: failed in 2 years, cheap Chinese
Vehicle:
Subaru Outback
OEM. Went aftermarket 2 times in a year replacing that pump. Finally bit the bullet and paid for toyota part.
Pros: Toyota part
Cons: aftermarket failed
100% oem or Aisin, I bought a knock off on amazon and it failed in 2 months.
Pros: 100% oem or Aisin
Cons: failed in 2 months
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