Upper Cooling Fan Switch for 1996-1997 BMW 328is & More - Four Seasons 36509

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$36.99
MPN: 36509
Item Package Quantity: 1
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Four Seasons Engine Cooling Fan Switch P/N:36509
Four Seasons Engine Cooling Fan Switch P/N:36509
$36.99

Designed to turn your electric cooling fan on as engine coolant heats up, this Four Seasons switch (part number 36509) is a radiator-mounted cooling fan temperature switch. It is cataloged for the upper position on the 1987-1989 Nissan Stanza, 1987-1988 Nissan 200SX and 1996-1997 BMW 328is, and is a vehicle-specific, direct-fit replacement for the listed applications. See the Buyer's Guide tab for engine details.

The switch mounts in the radiator. It is designed to sense coolant temperature and switch the cooling fan circuit at its set point.

  • Brass construction: the brass body is built for accurate temperature sensing.
  • Zinc-coated terminal: helps resist corrosion at the electrical connection.
  • Sealing parts included: comes with the gaskets, O-rings or seals needed to replace the switch properly.
  • Engineered and tested: made for specific vehicle applications and backed by Four Seasons' more than 50 years of mobile A/C experience.

This switch may need replacing if the cooling fan does not come on as the engine warms, if the fan runs constantly, if the temperature gauge climbs in slow traffic, or if coolant seeps at the switch. A relay, fuse, wiring fault or fan motor can cause the same signs, so diagnose the fan circuit before you replace the switch.

Interchange: 1551118 · 207454 · 11136509 · 2159504F04 · 2159529R00 · 19189524 · 801975 · 1711383 · A6626 · 50286 · MT0538 · SW8435 · SW527

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

1551118, 207454, 36509, 11136509, 2159504F04, 2159529R00, 19189524, 801975, 1711383, A6626, 50286, MT0538, SW8435, SW527

Frequently Asked Questions

What does the Four Seasons 36509 cooling fan switch do?

It is a radiator-mounted temperature switch. It is designed to sense coolant temperature and switch the electric cooling fan circuit at its set point.

Which vehicles does part 36509 fit?

It is cataloged for the upper position on the 1987-1989 Nissan Stanza, 1987-1988 Nissan 200SX and 1996-1997 BMW 328is. Check the Buyer's Guide tab for engine details.

What is this cooling fan switch made of?

Four Seasons specifies brass construction for accurate temperature sensing and a zinc-coated terminal to help resist corrosion.

Does the switch come with a gasket or seal?

Yes. Four Seasons includes the gaskets, O-rings or seals needed to replace the switch properly.

What are signs of a failing cooling fan switch?

The fan may not turn on as the engine warms, may run all the time, or the engine may overheat in traffic. Relays, fuses and wiring can cause the same signs, so test the fan circuit first.