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 Buyer’s Guide tab 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
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