Keeping your vehicle's engine cool is as important as keeping the cabin cool. As the engine's temperature rises above its predetermined level, the electric fan is turned on to dissipate the heat. The electric fan thermostat keeps tabs on the engine's temperature and it turns the fan on or off when needed. If the electric fan thermostat breaks down, you need to find the right one for your vehicle or risk having your engine breakdown due to overheating.
Find a Compatible Part
Not all vehicle parts are created equal, even if they perform exactly the same. Each car part is designed differently by the manufacturer. From the shape to its measurement, these parts run the same but have different fits. Sometimes, the difference can be with the wires used to connect the part or how they're connected to the vehicle. If you're not careful when buying a new electric fan thermostat, you will end up with the wrong fit.
Always consult the vehicle's manual for the proper make, model, and type of electric fan thermostat before making a purchasing. You can also bring the old part to an auto parts store and ask help from the store's staff. If you want to shop online, you can take a picture of the part or search for the part number. A lot of online auto parts dealers can also help you out.
Original or Replacement Parts
It's a toss-up between a cheaper replacement versus a costlier OEM version. Car enthusiasts have been debating on this topic for ages, but what does "cheap" or "costly" mean? If a replacement electric fan thermostat is affordable because of the lack of branding, and then go get it. If we are talking of quality as being cheap, go and get an OEM part.
OEM manufacturers may have an advantage with how the electric fan thermostat's wiring was designed. They were the ones who designed the parts and first installed it on your vehicle. However, if you do you research and study your vehicle's electric fan thermostat; you can get a replacement part that will fit your vehicle nicely.
Always look for the right fit and worry about the price later on. Ask the people in the know, experienced mechanics, and the online community to help you find the right part. Do not charge with guns all blazing when shopping for car parts.