Standard Motor Products TS-121 Engine Cooling Fan Switch

Buyer fitment guide only intended as reference. Please use catalogue search by vehicle to ensure proper fitment.

• CARQUEST Standard 51732
• Four Seasons 35931
• Kem RF1
• Mighty 4-1940
• ACDelco 12351530
• ACDelco 15-51101
• ACDelco 19021191
• ACDelco 19189421
• ACDelco E1856A
• ACDelco F1858
• General Motors 12351530
• General Motors 19021191
• Airtex 1S4342
• MTE-THOMSON 3734
• CARQUEST Premium By WELLS 53-13805
• Echlin FS100
• Duralast SW501
• Santech MT0490
• Ford E0ZF8B607AA
• Ford E0ZF8B607AB
• Ford E0ZZ8B607A
• Duralast CFSA28
• BWD TFS2
• ACDelco 1551101
• Mighty 41940
• CARQUEST Premium By WELLS 5313805

• As a global manufacturer of original equipment ignition products, we maintain complete quality control throughout the manufacturing process from componentry to finished product
• In design, we specify custom wax formulations that will expand when heated, activate a snap action electrical contact and transfer the electrical signal to the fan controller
• In manufacturing, we custom form the wax pellets for different temperature range specifications. All units are calibrated and tested to confirm switch actuation at their specified temperature
• In production, all thermal switches are factory-calibrated to make electrical contact at the specified lower-temperature set point
• Robust design and high grade materials meet the stringent demands of today's service professional
• The switch is designed using a formed bimetallic contact arm. The bimetal contact movement is achieved using the different expansion rates of two metals fused together. This is a creep action device, provides precise performance