Help your electric cooling fan come on when the temperature calls for it with the Beck/Arnley Engine Cooling Fan Switch 201-1621. This thermo fan switch is designed as a direct replacement for original equipment applications. It is listed for several models, among them the 1994-1996 Kia Sephia, 1990-1994 Mazda Miata and 1992-1994 Mazda Protege, each with all engines. See the "Vehicles it fits" section for the full list.
Beck/Arnley designs its parts as direct replacements for OE applications across foreign nameplates, with close attention to form, fit, and function. Its product specialists work with a trusted global sourcing network to supply OE-quality parts that meet Beck/Arnley's own requirements and specifications.
- OE fit: Matches OE form, fit and function.
- Single terminal: The switch has one terminal. A wiring harness is not included.
- Application specific: One switch is used per application. Check the catalog data and confirm fit before ordering.
- Country of origin: Taiwan.
A thermo fan switch responds to temperature and helps control when the electric cooling fan runs. Signs it may need replacing include a fan that does not come on, a fan that runs constantly, or an engine that runs hot in slow traffic. Other faults can cause the same symptoms, so Beck/Arnley recommends professional diagnostics. Check the fan motor current draw, the control module or relay function, and the wiring and connectors. If the switch is the fault, this unit replaces it.
Interchange: D1858D · 1T1128 · 1435073 · WT671 · WT671Z · TS10055 · N35018840 · 0N35018840A · 9327 · TS244 · TU146
This part cross-references / interchanges with the following part numbers:
D1858D, 1T1128, 1435073, WT671, WT671Z, TS10055, N35018840, 0N35018840A, 9327, TS244, TU146
Frequently Asked Questions
What does a thermo fan switch do?
It is a temperature-sensitive switch that helps control when the electric cooling fan runs. It switches the fan circuit based on temperature.
Will this work as a Miata switch for my 1990-1994 Mazda Miata?
Yes. It is listed as a direct-fit replacement for the 1990-1994 Mazda Miata with all engines. Check the "Vehicles it fits" section to confirm your exact vehicle.
What comes in the box?
One Beck/Arnley 201-1621 switch with a single terminal. A wiring harness is not included, and the listed applications use one switch.
What are signs the cooling fan switch may need replacing?
Possible signs include a cooling fan that does not come on, a fan that runs constantly, or an engine that runs hot in traffic. Other faults can cause these too, so diagnose first.
What should I check before replacing the switch?
Beck/Arnley recommends professional diagnostics. Check the cooling fan motor current draw, the control module or relay function, and the electrical wiring and connectors.
