Standard Ignition Engine Cooling Fan Switch TS-103
Standard Ignition Engine Cooling Fan Switch TS-103 - view 2
Standard Ignition Engine Cooling Fan Switch TS-103 - view 3
Standard Ignition Engine Cooling Fan Switch TS-103
Standard Ignition Engine Cooling Fan Switch TS-103 - view 2
Standard Ignition Engine Cooling Fan Switch TS-103 - view 3

Standard Ignition Engine Cooling Fan Switch P/N:TS-103

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$34.99
MPN: TS-103
Item Package Quantity: 1
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Standard Ignition Engine Cooling Fan Switch P/N:TS-103
Standard Ignition Engine Cooling Fan Switch P/N:TS-103
$34.99

Keep the cooling fan responding to engine temperature with this Standard Ignition switch, the TS-103 engine cooling fan switch. It is a thermal switch that makes electrical contact at its calibrated set point to signal the fan control circuit. It fits many Subaru models, among them the 1978-1979 Subaru Brat, 1977-1979 Subaru DL and 1979 Subaru FE, as a direct-fit replacement for the listed applications. See the Buyer's Guide tab for the full list and engine details.

  • Quality control from start to finish: As a global maker of original equipment ignition products, Standard Ignition maintains quality control throughout manufacturing, from individual components through to the finished switch.
  • Calibrated set point: Each unit is factory-calibrated to make electrical contact at its specified lower-temperature set point. Every switch is also tested to confirm it actuates at its specified temperature.
  • Built for the shop: A robust design and high-grade materials meet the demanding needs of today's service professional.

This switch may need replacing if the cooling fan never switches on, if it runs all the time, or if the engine runs hotter than normal. Those symptoms can have other causes, so diagnose the cooling system first. If a failed fan switch is the cause, the TS-103 replaces it.

Interchange: TFS681 · SW503 · FS317 · 682151180

This part cross-references / interchanges with the following part numbers:

TFS681, SW503, FS317, TS-103, 682151180

Frequently Asked Questions

Is this the right Brat switch for a 1978 Subaru Brat?

Yes. The TS-103 is listed as a direct-fit cooling fan switch for the 1978-1979 Subaru Brat. Check the Buyer's Guide tab to confirm your exact vehicle.

Will it work as an FE switch on a 1979 Subaru FE?

Yes. The 1979 Subaru FE is among the listed applications, along with the 1977-1979 Subaru DL. The Buyer's Guide tab shows the full fitment.

What does an engine cooling fan switch do?

It is a thermal switch that makes electrical contact once it reaches its calibrated temperature set point. That contact sends the signal that switches the cooling fan on.

How does Standard Ignition calibrate this switch?

Every unit is factory-calibrated to make contact at its specified lower-temperature set point. Each one is then tested to confirm it actuates at its specified temperature.

What are signs the cooling fan switch may need replacing?

Signs include a cooling fan that won't turn on, a fan that runs constantly, or an engine running hotter than normal. Diagnose first, because other cooling-system faults can cause the same symptoms.

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