🌡️ Stay cool, drive smarter — don’t let your engine miss a beat!
The AISIN THT-019 Engine Coolant Thermostat delivers precise temperature control with OE-matched quality, engineered from durable alloy steel and plastic. Compatible with a wide range of Lexus, Toyota, and Scion models, it ensures reliable engine cooling and optimal performance, making it the smart upgrade for professional drivers who demand efficiency and longevity.
| Brand | AISIN |
| Model Name | AISIN |
| Color | Factory |
| Specific Uses For Product | [POSSIBLE USES: Engine temperature regulation, Vehicle heating and cooling system control, Automotive cooling system maintenance] |
| Temperature Control Type | automatic |
| Included Components | thermostat |
| Voltage | 12 Volts |
| Material | Alloy Steel, Plastic |
| Shape | cylindrical |
| Control Method | Touch |
| Backlight | No |
| Global Trade Identification Number | 04954514965101 |
| Manufacturer | AISIN |
| Item Weight | 5.6 ounces |
| Product Dimensions | 3 x 1 x 2.8 inches |
| Item model number | THT-019 |
| Exterior | Machined |
| Manufacturer Part Number | THT-019 |
| Position | Inside |
A**N
As Good as the Original
This thermostat functions just as well as the original from Toyota. Since Aisin is an OEM supplier, this may be the exact same part. It fits perfectly in the 1MZ-FE engine in my 1999 Camry. Doesn't come with the gasket, but the gasket is cheap and readily available. Just make sure the "jiggle" valve is on top when your install it.
K**K
Great thermostat
Has been installed about six months. No issues. Greatvfit. Shipment was on time.
W**Z
Very well made and excellent packaging
Like OEM but less expensive, I love it
R**T
Genuine OE replacement, Does not come with Gasket/O-Ring
Worked as advertised. This is a genuine OE replacement for a lot of Toyota's including the one we worked on. Replacement went in fine, no issues.The only caveat is that this does not come with the O-ring/gasket so ensure that you order its separately or have one available on hand
A**D
Great price
This is exactly what I needed for way less than the local shop wanted for it.
M**S
Worked as it should, no issues
Was for a 99 v6 camry. Took a total of an hour to do.
G**T
Better than Toyota thermostat
Long story short. My Tacoma from new would pretty much run at 184-186. At a point in its life I did a regular maintenance job to the cooling system and the thermostat was one of the many new parts bought from a Toyota stealership. From that point on, my coolant temp would fluctuate from 188-193 and climb all the way up to 210 in in high heat hwy driving. Since then I’ve been through 2 more Toyota thermostats, fan clutch and even a radiator. No change.Did some reading/research and someone in a forum mentioned the gen 1 tacomas came from the factory with Aisin thermostats. I decided to test this theory. As you can see in the photo attached to this review, there’s definitely a physical difference. After install, the truck is back to normal operating temp.:).I haven’t tested it hard yet, but I’m pretty confident this was the issue.FYI all temps were read with Scan gauge plug in to my obd2 port.I hope this info helps many other save lots of time, money and frustration.Garrett ;)
P**E
Solid built product
The new Aisin thermostat worked like a charm. Old thermostat was stuck open and coolant temp was reading way too cold which affects mpg and can lead to engine problems if left alone.
Trustpilot
1 day ago
3 weeks ago
