Aisin TKF-005 has the 2 port pump and is otherwise identical to TKF-004 with the 3 port pump.
Pros: identical to TKF-004
Part number: TKF-005
Owner reviews for water pump
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Ive reinstalled another new HEPU(made in germany) pump due to mileage. I don't think anything is wrong with the old one. When I cleaned the o-ring seal contact area on the block it was corroded right where it left an imprint.
Pros: new pump due mileage
Cons: corroded o-ring seal
Vehicle:
Volkswagen
153k miles on my original WP. Still going strong too.
Pros: still going strong
Vehicle:
BMW
Mileage: 246230 km
Has 137,000 miles on it original water pump. Still good to be used but don’t know when she’ll crap out. Very impressed that I lasted this long.
Pros: lasted very long
Vehicle:
BMW
Mileage: 220477 km
I went with Gates. My oem pump on my Mazda CX9 failed at 90k.... The bearing failed and the amount of bearing material in the housing was crazy.
Cons: bearing failed, crazy material
Vehicle:
Mazda
Mileage: 90000 km
However the pierburg shouldn't crack as it's all aluminum. That doesn't mean it'll last any longer. My original one (n54) failed at about 60k. Replaced with factory. Then replaced that one with pierburg as I was doing oil pan gasket and figured might as well since I'm in there at about 90k. The pierburg one failed at 10k miles (electronics jammed up somehow…I’m guessing some sort of freak surge or something as it’s a pretty simple design). Anyway replaced that with pierburg again and going strong albeit it’s only been 30k miles on the new one.
Pros: aluminum, shouldn't crack
Cons: electronics failed
Mileage: 60000 km
The 3.5 5th generation Explorer has an internal water pump driven by the timing chain. It’s an enormous pain to change requiring significant disassembly (nearly 12 hours of labor) and generally includes replacing the timing chain in the process since you’re already in there, plus when it fails it can easily mix the coolant with the oil and destroy the engine, all that’s keeping them apart is a little seal.
Cons: internal pump, difficult to change, engine damage risk
Vehicle:
Ford Explorer
I did this on my Mazda CX9 (same design), also failed around 90k miles.
Cons: failed at 90k miles
Vehicle:
Mazda
Mileage: 144840 km
Update. The replacement HEPU water pump is now leaking.. from the freeze plug…
Cons: leaking from freeze plug
Replacement HEPU water pump is now leaking… from the freeze plug.. gonna let it ride and try a different brand when I change the belt in 50K miles
Cons: leaking from freeze plug
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