

🚗 Keep your Lexus running cool and confident with AISIN’s elite water pump!
The AISIN WPT-137 is a top-tier, all-new engine water pump designed specifically for select Lexus GS, IS, and RC models. Featuring smooth coolant flow channels, carbon ceramic mechanical sealing, and corrosion-resistant materials, it delivers superior cooling performance and durability. This OEM-quality pump includes gaskets for a complete, precise fit, making it the trusted choice for professional-grade engine maintenance.











| ASIN | B00829I2ME |
| Automotive Fit Type | Vehicle Specific Fit |
| Best Sellers Rank | #210,848 in Automotive ( See Top 100 in Automotive ) #530 in Automotive Replacement Engine Water Pumps |
| Brand | AISIN |
| Customer Reviews | 4.5 4.5 out of 5 stars (221) |
| Date First Available | May 10, 2012 |
| Exterior | Machined |
| Global Trade Identification Number | 04954514921305 |
| Item Weight | 1 pounds |
| Item model number | WPT-137 |
| Manufacturer | Aisin |
| Manufacturer Part Number | WPT-137 |
| Material | Carbon Ceramic |
| Model | Aisin New Water Pump |
| OEM Part Number | 1610039435, 1610039436 |
| Position | Center |
| Product Dimensions | 9.2 x 18 x 5.7 inches |
| Vehicle Service Type | Car, Truck |
| Weight Class | Heavy Weight |
J**G
Exact fit for my 2007 Lexus IS250
I'm very happy with this part. It was identical to the original part. Much less expensive than going through the dealer, of course. It certainly isn't an "easy fix" but it's a very do-able DIY job to replace a water pump. It was one of those very rewarding fixes because of the dramatic change in engine noise, and coolant leakage.
T**R
Great price over dealer retail.
This was a bit cheaper when I purchased it but it was a perfect fit. Great quality. Zero issues and super quiet.
P**G
Works well
Item came on time. Works well after 1 week. Let's see how it'll hold to. 2008 Lexus gs350.
J**.
Great quality and fitment
Price is very competitive as it similar to an original product, no hassle on fitment as it assembles perfectly and intended. Installing will be easy if all preparation is considered; proper tools, parts, and safety precautions working on vehicles.
A**S
The OEM offering!
The only pump you should use on Toyota or Lexus vehicles! Period!
D**K
very simple as long as you're not an idiot and a chick like man. saved me at least 200$ in labor
been well over a year. no leaks or issues at all. I'm not a mechanic and never changed anything on a car myself. but with you tube videos and a socket set. I got it done myself in half an hour. half an hour because i already learned the area when figuring out what the jddue was. otherwise insay an hour max. very simple as long as you're not an idiot and a chick like man. saved me at least 200$ in labor. and I say at least because my old friend wanted 200$ to do the job. dealer is probably 4-500. if you do it yourself. don't back the car up like the videos say. you can drain the radiator fluid by just sticking your hand in and raising the little valve which drains everything. just out a fun under your car to catch it all.
F**Y
OEM replacement works for IS350
The original water pump on my 2007 IS350 developed a rattle. It lasted 110k miles. Plan was to bring it to a shop to replace until I heard it'd cost nearly $1k to do the job. Ordered this part, went full on DIY, and replaced it with the help of DIY info and videos. Can't thank those meticulous brave souls who documented steps so well. AISIN is an OEM brand Lexus uses. This part is an exact fit. Some reviewers mention that it is not genuine AISIN because of shaved off stamping. FALSE. What they shaved off was the Toyota stamping for legal reasons. Since this is a genuine part made by AISIN for Toyota, they have to shave off the Toyota stamp because it's not sold as a Toyota part through the dealership but as an OEM part.
Y**I
OEM quality for is250
Was concerned about they would remove the Toyota and Asian labels. Received one with only the Toyota label removed which make more sense. Compared with OEM part’s picture, the differences are the design of pulley mount and bleeding part. It could be just new designs. I spent a whole afternoon to replace the water pump, thermostat, and radiator cap . Compared with the old pump, I could feel that they were both well made. Upon the review, I have put more than 400 miles on the new pump. No leak. No noise. Literally saved a new iPhone gift money for my wife. Totally worth it. Update on 2025 June: 4 years with more than 25k miles on it. No problem at all!
C**T
No issues, high quality, just like original.
自**屋
某自動車メーカーの刻印は消されてますが、これが普通です。
S**N
Perfect! why pay 300+ tax at dealership when this is the same part for half the price. AISIN is perfect. (90% of all toyota/lexus is made by AISIN. This is trusted. If you notice a grinding/shaving marking on your product is due to "Toyota/Lexus" marked on it that has been removed for legal reasons. Fits perfectly. now see how long it lasts.
A**N
Replaced old water pump as it was making noise. New water pump solved issue and runs well
J**.
its the stock toyota waterpump, perfect fit.
Trustpilot
4 days ago
2 weeks ago