Water pump Gates or AISIN

Aisin TKF-005 has the 2 port pump and is otherwise identical to TKF-004 with the 3 port pump.

Mine started leaking around 145,000 due to bearing play. It is a do-able DIY driveway job.

Yes, Aisin TKH-002. I personally would only buy from Napa store or Carid.com. Napa is listed as authorized retail for my state. I personally wont trust rockauto for critical parts like this, I have has two experiences with previously used/tampered products from them. I can pay a little more from Carid.com and they shipped directly from Aisin warehouse, not Rockautos random low bid distributor. Amazon and Ebay have a bad reputation for fakes, no personal experience with that.

I use the same exact part that you bought. On mine I could see where they removed the word Lexus or Toyota from the mold. It's the same part as OEM. I replaced the water pump myself and it wasn't too bad but some of the bolts are difficult to get a socket on.

I used binder clips to hold the timing belt on the driver side cam gears instead of purchasing the tool. Purchased OEM thermostat from dealership and Aisin water pump / timing belt kit from RockAuto. First time doing one, was easier than I thought it was going to be.

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.

Years ago I would use the Gates kit on my 03 Evo with no issue, but a few years back I had a failure (from a different component) after 19k miles and the Gates pump was weeping when I removed it. The shop I use also doesn’t recommend them either so I go OEM for the water pump anymore.

water pump failed at 101,000. Shop replaced under warranty. That next one failed at 110,000. Took a little work since shop changed owners but got the the water pump replaced at no cost. Shop said the two bad ones were Gates

I had nothing but problems with Gates water pumps in my 4Runner - they would always start leaking profusely from the weep hole after a few days of use. Replaced it three times under warranty

I used a Gates kit for the timing belt change and the cheap Chinese water pump water seal failed in 2 years.