🚗 Keep your engine cool and your ride smooth!
The AISINTHT-004 Engine Coolant Thermostat with Housing and Gasket is engineered for optimal performance in select Lexus models. With OE matched specifications, it ensures precise temperature regulation and dependable cooling system functionality. Manufactured in Japan with high-quality materials, this thermostat is designed for longevity and includes essential components for easy installation.
| Manufacturer | AISIN |
| Brand | AISIN |
| Model | AISIN |
| Item Weight | 7 ounces |
| Product Dimensions | 4.1 x 4.1 x 3.7 inches |
| Country of Origin | Japan |
| Item model number | THT-004 |
| Exterior | Machined |
| Manufacturer Part Number | THT-004 |
| OEM Part Number | 16031-31020 |
| Mirror Adjustment | Button Control |
T**D
Perfect exact same design and fit
Works perfectly, unlike the aftermarket ones sold in stores with my car. Very specific and controlled temperature control
M**.
OEM, fits and works perfect
Exactly what you would expect from an OEM product, perfect fit, and function.
F**Y
Fits and works great on 2007 IS350
Authentic OEM replacement for 2007 IS350. Works great, no leaks, and is identical to the original thermostat. Probably didn't need replace it but why not. It's extra insurance since I'm already replacing the water pump anyway.
N**Z
Jus like oem
Basically like oem same one at autozone was $79 lol u jus waited a 2-3 day to arrive to save $50 !
M**E
Just like the original that was removed from the car.
It's the same thing in every aspect of the one the original removed from the car. No leakes no issues so far. 2011 Lexus IS250
L**Y
An OEM part. Fit my 11 GS350
It is an OEM part with "Toyota" rubbed off and replaced with a "TAMA Thermostat" sticker. They and AISIN are pretty much an OEM supplier to the major Japanese brands. Your reliable transmission? Made by AISIN. They probably sell any overstock as their brand. 100% you can trust this aftermarket brand. Toyota does, puts it in their box, charges $30 more. It is important to have original OEM for a plastic housing, some Fords have this similar setup and fail. If I had to do over replacing it, I would have removed the water housing (like the book says). But it is doable with some creativity leaving it on and removing the hoses. Spec is 7ft/lbs-84 in/lbs for the nuts (or bolts, depending how they come out!). Do not overtighten! I used a no spill funnel to fill the system, was due for 100K service. If the review stays the same, the part is working.
D**A
Buyer beware
Those seized up after 2 months , but oem And have no issues
J**.
Fits 2006 IS350
This part fit great and is made very well. Fixed cooking issues on a 2006 IS350
G**Y
Its OEM. Can see the Toyota Logo was shaved off. Cant Complain.
A**D
I can’t say this part is equivalent to the OEM made by Toyota. It is the same one probably made by this company for Toyota. It is identical to the OEM and it looks like they removed the Toyota logo to be sold commercially for the producer. I would highly recommend it.
T**Y
I used this in a 2009 Lexus IS 250, it fit and work great.
Trustpilot
1 week ago
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