BWD TFS657 Engine Cooling Fan Switch

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

• Four Seasons 36474
• Kem RF141
• ACDelco 15-50398
• ACDelco 15-50523
• ACDelco 89057877
• General Motors 1341036
• General Motors 90458540
• Airtex 1S1377
• Standard Ignition TS-426
• Wells SW1422
• CARQUEST Premium By WELLS 53-13709
• VEMO V40-99-1084
• ACDelco 1550398
• ACDelco 1550523
• CARQUEST Premium By WELLS 5313709
• Standard Ignition TS426
• VEMO V40991084
• Echlin FS293
• Duralast SW1422
• Duralast CFSA58

• BWD is a global manufacturer of original equipment ignition products, complete quality control is maintained through 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