Keep your cooling fan cycling on at the right temperature with the Standard Ignition switch TS-127, a coolant fan switch that senses engine coolant temperature and signals the fan controller when the set point is reached. It's a direct-fit replacement for the 1985-1989 Nissan Maxima, 1986-1989 Nissan Stanza, and 1985-1986 Porsche 928 — see the "Vehicles it fits" section for engine specifics.
If a failed fan switch is the cause of an overheating engine or a fan that won't cycle, this replaces it; diagnose the cooling system first. It serves as a Maxima switch for the 1985-1989 Nissan Maxima and as a Porsche 928 switch for the 1985-1986 Porsche 928.
Interchange: 17-1077
171077 · TFS533 · 8436 · SW526 · FS157 · 19021001 · 2159501E00
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What does the TS-127 coolant fan switch do?
It senses engine coolant temperature and, when its calibrated set point is reached, closes a snap-action electrical contact to signal the fan controller to run the cooling fan.
Does it fit my 1985-1989 Nissan Maxima?
Yes, it's a direct-fit replacement for the 1985-1989 Nissan Maxima. Check the "Vehicles it fits" section to confirm your vehicle.
How is the switch actuated?
A custom wax formulation expands when heated to drive a snap-action contact, and a formed bimetallic arm uses two fused metals with different expansion rates as a creep-action device for precise performance.
What are signs this switch may need replacing?
A cooling fan that won't turn on, runs constantly, or an engine that overheats can point to a failed fan switch. Diagnose the cooling system first, since these symptoms have other causes.
Is the switch calibrated?
Yes. Every unit is factory-calibrated and tested to confirm actuation at its specified lower-temperature set point.
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Standard Motor Products
Standard Motor Products
Standard Motor Products
Standard Motor Products
Standard Motor Products
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
