Signal your engine's cooling fan to switch on when coolant reaches its set temperature with the Standard Ignition Engine Cooling Fan Switch TS-247. This thermal switch senses coolant temperature and opens or closes an electrical contact to tell the fan controller when to run the cooling fan. It installs as a direct-fit replacement for the listed applications — including the 1984-1985 and 1991 BMW 318I, 1982-1988 BMW 528E, 1978-1984 BMW 733I, 1988-1991 BMW M3, and the 2003 Volkswagen Golf — among 16 applications; see the Buyer's Guide tab for the full list.
- Wax-pellet actuation: a custom wax formulation expands when heated to activate a snap-action electrical contact and transfer the signal to the fan controller.
- Factory-calibrated: wax pellets are custom-formed for the temperature-range specification, and every unit is calibrated and tested to confirm actuation at its specified lower-temperature set point.
- Bimetallic contact arm: two metals with different expansion rates are fused together as a creep-action device for precise performance.
- Built to service-professional standards using robust design and high-grade materials.
Specs: 12-volt, two male blade terminals on a single round male plug-in connector, metal housing, 14 mm x 1.50 thread. No wiring harness, mounting hardware, or brackets are included. Country of origin: Italy.
Interchange: 1364273 · 61311364273 · TFS541 · SW572 · FS197 · 19021184. Manufacturer part number TS-247.
This part cross-references / interchanges with the following part numbers:
Frequently Asked Questions
What does the TS-247 cooling fan switch do?
It senses coolant temperature and opens or closes an electrical contact, signaling the fan controller to turn the engine cooling fan on or off at the switch's calibrated set point.
Does this switch fit my vehicle?
It's a direct-fit replacement for 16 listed applications, including several BMW models (318I, 528E, 733I, M3 and more) and the 2003 Volkswagen Golf. Check the Buyer's Guide tab to confirm your exact year and model.
Is a wiring harness or mounting hardware included?
No. The wiring harness, mounting hardware, and mounting brackets are not included. Consult the vehicle service information for the correct fasteners and whether they may be reused.
What are the signs this switch may need replacing?
Signs may include the cooling fan not cycling on as coolant heats up or the fan running constantly. Diagnose the cause first, since other components can cause the same symptoms; if the switch is at fault, this replaces it.
What numbers does this switch interchange with?
It cross-references 1364273, 61311364273, TFS541, SW572, FS197, and 19021184. Its own manufacturer part number is TS-247.
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