Keep the electric cooling fan responding to engine temperature with the Beck/Arnley Engine Cooling Fan Switch, part number 201-1520, a thermo fan switch designed as a direct replacement for original equipment applications. It is listed for many BMW models, among them the 1991-1994 BMW 318is, 1987-1991 BMW 325i and 1991-1992 BMW M5. See the "Vehicles it fits" section for the full list and engine details.
A thermo fan switch is a temperature-sensitive switch that signals the engine cooling fan to turn on as temperature rises. This helps the cooling system shed heat when airflow alone isn't enough, such as at idle or in slow traffic.
- OE form, fit and function: Built to match the original part's form, fit and function, with special attention given to all three.
- OE-quality sourcing: Beck/Arnley's product specialists work with a trusted global sourcing network, and each part is built to meet Beck/Arnley's own requirements and specifications.
- Application specific: Made for specific vehicles, so check the catalog data and confirm fit before ordering.
- Diagnose first: Professional diagnostics are recommended. Before replacing the switch, check the cooling fan motor's current draw, the control module/relay function, and the electrical wiring and connectors.
Signs a thermo fan switch may need replacing include a cooling fan that does not come on as the engine warms up, a fan that runs all the time, or engine temperature rising in stop-and-go driving. A fan motor, relay, control module or wiring fault can cause the same signs, so confirm the cause before ordering.
Interchange: 1S4766 · 61311378073 · TFS579 · 61311378073MY · 80206064280 · 80206064500 · 8490 · TS296 · SW940
This part cross-references / interchanges with the following part numbers:
1S4766, 61311378073, TFS579, 61311378073MY, 80206064280, 80206064500, 8490, TS296, SW940
Frequently Asked Questions
What does a thermo fan switch do?
It is a temperature-sensitive switch that signals the engine cooling fan to turn on as temperature rises. This helps the cooling system shed heat at idle and in slow traffic.
Is this the right M5 switch for a 1991-1992 BMW M5?
Yes. Beck/Arnley 201-1520 is listed for the 1991-1992 BMW M5. Check the "Vehicles it fits" section to confirm the entry for your car before ordering.
Which other BMW models does this cooling fan switch fit?
It is listed for many BMW models, including the 1991-1994 BMW 318is and the 1987-1991 BMW 325i. The "Vehicles it fits" section has the full list.
What should be checked before replacing the fan switch?
Beck/Arnley recommends professional diagnostics. Check the cooling fan motor's current draw, the control module/relay function, and the electrical wiring and connectors.
What are signs a cooling fan switch may be failing?
A fan that won't come on as the engine warms, a fan that runs constantly, or rising temperature in traffic. A fan, relay or wiring fault can cause the same signs, so diagnose first.
