Keep your engine's cooling fan switching on and off at the right coolant temperature with the Standard Ignition Engine Cooling Fan Switch TS-90. It drops in as a direct-fit replacement for the 1974-1978 Nissan B210, 1975-1978 Nissan 280Z, 1976-1978 Nissan F10, and 1979-1980 Nissan 280ZX. This coolant fan switch reads engine coolant temperature and opens or closes its electrical contact to signal the fan controller when the fan should run.
- Temperature-calibrated actuation: a custom wax formulation is designed to expand as it heats, triggering a snap-action electrical contact that passes the signal to the fan controller.
- Factory-tested: the wax pellet is custom-formed for its temperature range, and every unit is calibrated and tested to confirm actuation at its specified set point.
- Built for service: robust design and high-grade materials, with a metal housing rated for 12V; open at idle.
- Connection: plug-in round connector with two male bullet terminals and a 16mm x 1.50 thread. Wiring harness, mounting hardware, and mounting brackets are not included.
Signs this switch may need replacing include a cooling fan that won't turn on, an engine that runs hot, or a fan that stays on constantly. Diagnose the cause first; if a failed fan switch is behind the problem, replacing it with the TS-90 addresses it. Country of origin: Japan.
Interchange: TFS501 · SW506 · FS140 · 12336278 · 37765657013 · 37780PA6003 · 21595M0205 · 21595M0206. Manufacturer part number TS-90 (also TS90).
This part cross-references / interchanges with the following part numbers:
Frequently Asked Questions
What does the TS-90 cooling fan switch do?
It senses engine coolant temperature and opens or closes its electrical contact to signal the fan controller when the cooling fan should run.
Which vehicles does the TS-90 fit?
It's a direct-fit replacement for the 1974-1978 Nissan B210, 1975-1978 Nissan 280Z, 1976-1978 Nissan F10, and 1979-1980 Nissan 280ZX. See the Buyer's Guide tab to confirm.
What are the signs of a failing fan switch?
A fan that won't turn on, an engine running hot, or a fan that stays on constantly can be signs. Diagnose the cause before replacing, since these symptoms have other possible causes.
Does it include a wiring harness or mounting hardware?
No. The wiring harness, mounting hardware, and mounting brackets are not included with the TS-90.
What terminals and thread does the TS-90 use?
It has a plug-in round connector with two male bullet terminals, runs on 12V, and uses a 16mm x 1.50 thread.
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