Description
Check the specifications, dimensions, variation details, referenced part numbers, and available fitment evidence before matching this item to an application.
Product Description
HOTSYSTEM supplies gauges in different style, such as Air/Fuel ratio,Exhaust Gas, RPM tacometer, Turbo Boost meter, Oil temperature, Oil pressure, Vacuum, Voltage and Water temperature.
SPECIFICATION
Color:Black
Size:2in/52mm
Readout:Blue digital LED
Measurement Object:Water
Power:12V/Max0.3A
Unit:Celsius
Measurement Range:40-150℃
Warning Point(Red Light):100℃
Visual Angle:≤180°
Material:ABS plastic
FEATURES
- This gauge will precisely monitor the temp within your coolant that is within a range of 40 to 150℃.
- This series is fully electronic with a blue digital LED readout, which allows for easy viewing at all angles during all lighting conditions.
- Each gauge includes an temperature sensor with all necessary mounting and installation hardware.
- Also included is a feature allowing your gauge to dim for night driving when your headlights have been switched on.
- When powering up your Blue Digital gauge, the user will be alerted to a startup sequence to ensure your gauge is functioning properly and that it is calibrated correctly.

Austen Fults –
I recently purchased this HOTSYSTEM water temperature gauge for my car, and despite a small incident that occurred during shipping concerning an incorrect gauge, I cannot be more satisfied with my purchase of this water gauge. Not only are HOTSYSTEM gauges very high quality performance parts, but the customer service on their end is absolutely phenomenal. The people there at HOTSYSTEM worked with me as quickly as possible to replace and reship the guage that I originally ordered. I highly recommend this gauge and this company! I am truly grateful and impressed!
Jessika –
This is a reliable and accurate gauge.Just be sure to note that it reads in metric Celsius/Centigrade.The warning light comes on at 100° C.Hook up was easy. The temp sender is 1/4 NPT. If using Teflon tape be sure to NOT wrap the end of the sensor.Be careful when installing as the electrical connection stud on the sensor is easily damaged. This is not a failing of the product just inherent in the design. Be sure to use a deep enough socket when installing so there is no pressure on that stud when installing.The included cable is only a few inches long so you will need extra wire for the sensor and/or electrical connection.There are three wires: black (-) & red (+) for power and a green sensor wire
Customer –
Works as it should looks really good love it wiring was easy as I have never done it before and was super easy. Bought 4 of them all different gauges obviously 🙄 and they are all great.
danny lee davis –
there good gauges and they do work and they are really nice. but the company dont tell you on amazon that you have to buy extra parts some where else to get them to fit right inn the block. check before you buy these.
Mason –
I bought 3 diffrent guages from this company and all three are increadibly in acurate. The tach jumps around and only shows the rpm half the time and when it does its normaly off by 1k. The water temp is off by 40 degrees. The oil pressure guage works sometimes when it feels like it. All worthless.
Myheavytoolbox78 –
It’s in Celsius not Fahrenheit, so if you dont know the conversion might suggest looking for a Fahrenheit guage.
Dominique Bossard –
Good product but corrosion in marine use
Chase –
Bought this for a water cooling project. I needed something cheap and easy to read. I accidently ordered Celsius when I needed Fahrenheit. No biggie I need to learn the metric system anyway.