Cooling Fan Switch for 1975-1980 MG MGB - Standard Ignition TS-257

$72.99

Standard Ignition Engine Cooling Fan Switch TS-257

Standard Ignition Engine Cooling Fan Switch TS-257 - view 2

Standard Ignition Engine Cooling Fan Switch TS-257 - view 3

Part number: TS-257

UPC: 091769089481

Condition: New

Weight: 0.10 LBS

Item Package Quantity: 1

$72.99

Current Stock: 33

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Standard Import Engine Cooling Fan Switch P/N:TS-257

$72.99

Description

Keep the cooling fan cycling on cue with the Standard Ignition Engine Cooling Fan Switch (TS-257, also written TS257) — a direct-fit Standard Ignition switch for the 1975-1980 MG MGB. This thermal switch monitors coolant temperature and transfers the electrical signal to the fan controller, closing its contacts once the coolant reaches the specified set point so the cooling fan runs when the engine needs it.

Temperature-triggered actuation: a custom wax formulation expands when heated to drive a snap-action electrical contact, passing the signal on to the fan controller.
Factory-calibrated: every thermal switch is calibrated and tested to confirm actuation at its specified lower-temperature set point.
Bimetallic contact arm: a formed bimetal arm uses the differing expansion rates of two fused metals as a creep-action device for precise performance.
Built for service: robust design and high-grade materials meet the demands of today's service professional.

If a failed switch is the cause of a fan that won't engage or an overheating condition, this switch for the 1975-1980 MG MGB replaces the original. Searching for a Standard Ignition coolant temperature switch for the 1975-1980 MG MGB? TS-257 is a direct-fit replacement for that application.

Interchange: TFS575 · SW595 · FS233 · URP1126

Manufacturer's description

Product specs

Vehicles it fits

Interchange numbers

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

TFS575, SW595, FS233, URP1126, TS-257

Buyer's Q&A

Frequently Asked Questions

What does the TS-257 coolant fan switch do?

It senses engine coolant temperature and, once the coolant reaches its specified set point, closes its contacts to transfer an electrical signal to the fan controller so the cooling fan engages.

What vehicle does the Standard Ignition TS-257 fit?

It is a direct-fit replacement for the 1975-1980 MG MGB. Check the "Vehicles it fits" section to confirm the switch matches your vehicle.

How does the switch actuate?

A custom wax formulation expands when heated to drive a snap-action contact, while a formed bimetallic contact arm provides a creep-action movement for precise performance at the calibrated set point.

What are signs this switch may need replacing?

Signs can include a cooling fan that won't turn on or an engine that overheats. Diagnose the cause first; if a failed switch is responsible, this part replaces it.

What numbers does the TS-257 cross-reference?

It interchanges with TFS575, SW595, FS233, and URP1126. The manufacturer part number is TS-257, also written TS257.