I still prefer the Aisin water pumps over the new current Yamada made water pumps. Better fit and finish, fewer leaks/defects (lot of the Yamada pumps are bowed right out of the box), and Aisin breaks the edges whereas the Yamadas are almost cut your hands up levels of sharp
A 525tds was my first car. Only ever had two problems with it. Heater fuse kept blowing- turned out the previous owners install of the head unit used eletrical tape which over time lead to a cable shorting out on the din cage. Water pump died - oem impeller was plastic. The replacement was metal
Replaced with an Aisin and no complaints
I got this kit and it’s working good, all that matters is the water pump is aisin
WP, like everybody else said. It sounds identical to my water pump on the same engine when it went. If you DIY it’ll be about $200 (Aisin pump plus new coolant), shop will charge $1000+. It’s an aggravating DIY job. Whether you DIY or have a shop do it, use a OEM replacement made by Aisin. Labor costs are too much to have to re-do it in a few years. I’ve seen prices down to $100 on sale.
I used the same ASIN water pump on my 4GR FSE 65k miles ago. Been great. No leaks or any issues. They are the OEM manufacturer and do not want to create a separate mold for the same product. Every bit as reliable.
I bought Aisin brand instead of Nissan OEM parts, hopefully they're as good or better.
Buy the M340i new and prepay your services. Great on gas but insurances and tires have been expensive. Water pump blew at 48k.
I want to share a brief but critical report regarding the recent replacement of the engine's electric water pump (EWP) on my Prius Gen 4. The analysis of the data logs revealed an alarming scenario; the new aftermarket pump's performance was completely unreliable, showing clear evidence of torque failure and instability. I had no choice but to purchase the Original Equipment Manufacturer (OEM) pump from the dealership (it was stamped with the AISIN logo). The problem was instantly and definitively solved.
Get the OEM water pump, I had no luck with aftermarket Aishin. They leaked almost immediately.
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