Standard Ignition TS-346 Engine Cooling Fan Switch

Engine Cooling Fan Switch for Toyota and Lexus

Standard Ignition TS-346 is an engine cooling fan switch with a plug-in attachment method, 12-volt operation, and a 16 mm x 1.50 thread size. It uses a female oval connector with two male blade terminals and an open-at-idle switch design for direct replacement service on select Toyota Supra and Lexus GS300 applications.

Key Features

• Engine cooling fan switch for temperature-based fan control
• Plug-in connector design with one oval female connector
• 12V electrical specification for automotive cooling systems
• 16 mm x 1.50 threaded mounting interface
• Metal housing with brass and plastic finish details
• Open at idle switch actuation style
• Standard Ignition TS-346 replacement part

Detailed Description

Standard Ignition TS-346 is built for vehicles that use a threaded engine cooling fan switch with a plug-in electrical connection. The oval connector, two blade terminals, and 12-volt rating support straightforward replacement in cooling fan control circuits. This part is listed for 1993-1998 Toyota Supra and 1993-1997 Lexus GS300, making it a direct-fit option for owners searching for a Toyota Supra cooling fan switch or Lexus GS300 engine cooling fan switch by part number TS-346.

This part cross-references Standard Ignition TS-346 for the same application.

What It Helps Address

• Cooling fan not switching on at the proper temperature
• Intermittent fan operation caused by a worn switch
• Electrical connection issues at the fan switch terminal interface
• Replacement needs for a damaged threaded coolant fan switch
• Restoring fan control on Toyota Supra and Lexus GS300 cooling systems

Installation Notes and Tips

Verify the 16 mm x 1.50 thread size, oval connector shape, and two-terminal blade layout before installation. Match the original connector style and mounting location on the cooling system, and inspect the harness connector for corrosion or looseness before plugging in TS-346. Confirm vehicle application by year and model: Fits 1993-1998 Toyota Supra, N/A; Fits 1993-1997 Lexus GS300, N/A.

Quality Assurance

Standard Ignition supplies replacement electrical and engine management components for service applications, and TS-346 follows the listed OE-style fitment and connector specifications for the vehicles shown.