Four Seasons 37904 switch for the 2004-2017 Toyota Prius and other vehicles senses engine coolant temperature; it is also called a coolant temp sensor switch.
- Engineered and tested for trouble-free operation, with over 50 years of mobile A/C experience behind it
- Color coded for easy identification
- Zinc coated terminal to resist corrosion
- Brass construction for accurate temperature sensing
A coolant temperature gauge that reads oddly or a check engine light can mean this switch is failing, though other faults give the same signs. Before you replace it, look over the terminal and the area around the switch for corrosion or coolant seepage, with the engine off and cool.
Starting with the 2004-2017 Toyota Prius, 2011-2017 Toyota Prius c and 2017 Toyota Prius Prime, it fits these and more. Open the "Vehicles it fits" section to check your exact model and engine.
Specifications
- Material: Brass
- Terminal coating: Zinc
- Identification: Color coded
In the box
This listing is one switch, supplied with gaskets, o-rings or seals to replace it properly.
Interchange: 1712514 · A14254 · 207098 · CT0035 · 8942947010 · SU10443
This part cross-references / interchanges with the following part numbers:
37904, 1712514, A14254, 207098, CT0035, 8942947010, SU10443
Frequently Asked Questions
Will the Four Seasons 37904 Prius switch fit a 2004-2017 Toyota Prius?
Yes, Four Seasons 37904 fits the 2004-2017 Toyota Prius, as well as the 2011-2017 Toyota Prius c and the 2017 Toyota Prius Prime. For other models, use the "Vehicles it fits" section.
Does the 37904 coolant temp switch come with seals or o-rings?
Yes, this switch comes with gaskets, o-rings or seals so you can replace it properly. This listing is one switch.
Is the Four Seasons 37904 switch made of brass?
Yes, Four Seasons 37904 has brass construction for accurate temperature sensing. Its terminal is zinc coated to resist corrosion.
How can I tell if this coolant temperature switch is going bad?
An odd temperature gauge reading or a check engine light can point to the switch, but other faults share those signs. A shop can test it to confirm.
Is 8942947010 the same as the Four Seasons 37904 switch?
Yes, 8942947010 is an interchange number for the Four Seasons 37904 switch. The full list of interchange numbers is on this page.
