Water pump AISIN or GRAF

I bought Aisin brand instead of Nissan OEM parts, hopefully they're as good or better.

Graf has been pretty good to me.

I have the Graf brand on mine, replaced mine at around 120k miles. It’s aluminum and has aluminum impeller also.

That\u2019s what I have in mine and I\u2019ve had zero issue with the water pump.

Water pump and timing belt done with OEM Aisin kit (March 2024)

Just replaced my water pump and thermostat on my 2015. Aisin pump, which is oem was $150 on amazon. $40 for the thermostat. Super easy to replace yourself. Especially if they want $4000 to do it.

I ordered this water pump from aisin hoping to receive an oem quality part but it seems the molding is not of quality.

Have had bad luck with graf metal impeller pumps, multiple failures over 2 different cars.

Aisin is of course the manufacturer of the defective one you are replacing. So there is that.

Well, all of these seals are not created equal in my experience. I have had a bad experience with some seal kits that had combustion chamber seals that were really hard so they didn't stretch evenly over the injector or compress properly with the proper tools. Luckily I was able to source some of the correct ones from a tech friend the same day, so I was able to get my car going. You really need to make sure that you have the right ones, as you have to destroy the old ones to remove them, and if the new ones aren't right, you are screwed. I personally won't recommend anything other than factory parts, as too many times I have tried something else, like Graf aluminum water pumps (two failures-100%, within six months) and gotten burned.