Standard Ignition TS-309 Engine Cooling Fan Switch

Engine Cooling Fan Switch for Mazda 626

Standard Ignition TS-309 is an engine cooling fan switch built for 12-volt applications with a plug-in attachment and a round male connector. It uses a metal housing with a brass finish and a 10MM x 1.25 thread size for direct replacement service on the listed application.

Compatible with 1984 Mazda 626, this Standard Ignition TS-309 cooling fan switch is a focused OE-style service part for temperature-controlled fan operation. The round switch design, blade terminal, and male connector layout support straightforward electrical connection in the original mounting location.

Key Features

• Engine cooling fan switch for 12-volt systems
• Plug-in attachment method with round connector shape
• Male connector and male blade terminal configuration
• Metal housing with brass finish
• 10MM x 1.25 thread size
• Open at idle: yes
• Round switch shape with toggle actuation style
• Compatible with 1984 Mazda 626

Product Details

Standard Ignition TS-309 is an engine cooling fan switch used to control fan operation based on temperature input in the cooling system. The switch features a single connector, single terminal layout, and a compact round body measuring 0.43 inches wide, making it suitable for applications that require a threaded, plug-in style replacement. This part cross-references FS208 and SW1630 for the same application.

Common Issues This Part Can Address

• Cooling fan not switching on at the proper temperature
• Cooling fan staying on longer than expected
• Intermittent fan operation caused by a worn switch
• Electrical connection problems at the fan switch terminal
• Threaded switch replacement needs on a 1984 Mazda 626

Installation Notes and Tips

Verify the thread size, connector style, and voltage rating before installation. Match the original plug-in connection and blade terminal layout to the vehicle harness, and inspect the cooling system connector for corrosion or heat damage before installing the new switch. Confirm proper sealing and torque for the threaded mounting point during service.

Quality Assurance

Standard Ignition TS-309 is built with a metal housing and brass finish for service use in the cooling system. Standard Ignition is a recognized aftermarket brand for electrical and engine management components, and this part is listed for the confirmed 1984 Mazda 626 application.