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Standard Ignition TX26 Engine Cooling Fan Switch
Engine Cooling Fan Switch for Select BMW and Toyota Models
The Standard Ignition TX26 engine cooling fan switch is a screw-on, 12-volt replacement switch built with a metal housing and a square connector layout. It is listed for select BMW 318i, BMW 325es, and Toyota Corolla applications, including a 91-degree C application on the 1986-1987 BMW 325es.
Key Features
- Standard Ignition TX26 engine cooling fan switch
- Screw-on attachment with 16mm x 1.50 thread size
- 12-volt electrical specification
- Metal housing with black and bronze finish
- 1 female connector, square shape
- 1 male blade terminal
- Open at idle: yes
- No bulb, wiring harness, or mounting brackets included
Detailed Description
The TX26 is an engine cooling fan switch that threads into the cooling system and uses a single blade terminal with a square female connector. Its screw-on design and 16mm x 1.50 thread size make it a direct-style service part for vehicles that use this switch configuration. This part number, TX26, is listed for 1998 BMW 318i, 1986-1987 BMW 325es, and 1987 Toyota Corolla applications.
This part cross-references Airtex Fuel Pumps FS177 for the same application.
What It Helps Address
- Cooling fan not switching on at the correct temperature
- Fan cycling issues caused by a worn thermal switch
- Overheating concerns tied to delayed fan activation
- Intermittent cooling fan operation from a failing switch contact
- Temperature-control faults in BMW 318i, BMW 325es, and Toyota Corolla cooling systems
Installation Notes and Tips
Verify the 16mm x 1.50 thread size, connector style, and 12-volt specification before installation. The TX26 uses a screw-on mounting method and does not include hardware, a bulb, or a wiring harness. Confirm the vehicle application and cooling-system temperature requirements, especially on the 1986-1987 BMW 325es 91-degree C application.
Quality Assurance
Standard Ignition supplies this cooling fan switch as a service replacement part for select BMW and Toyota applications. Confirm fitment against the vehicle’s original switch design and electrical connection before installation.
| Brand | Standard Ignition |
| Part Number | TX26 |
| Attachment Method | Screw-on |
| Bulb Included | No |
| Color/Finish | Black, bronze |
| Connector Gender | Female |
| Connector Quantity | 1 |
| Connector Shape | Square |
| Hardware Included | No |
| Housing Material | Metal |
| Mounting Bracket(s) Included | No |
| Open at Idle | Yes |
| Overall Width (mm) | 13.462 |
| Switch Actuation Style | Toggle |
| Switch Shape | Square |
| Terminal Gender | Male |
| Terminal Quantity | 1 |
| Terminal Type | Blade |
| Thread Size | 16mmx1.50 |
| Voltage | 12 |
| Width - Inches | 0.53 |
| Wire Quantity | 0 |
| Wiring Harness Included | No |
This part fits 4 vehicles. Search below:
| Year | Make | Model | Drive Type | Position | Notes |
|---|---|---|---|---|---|
| 1998 | BMW | 318i | N/A | ||
| 1987 | BMW | 325es | N/A | 91 Deg. C | |
| 1987 | Toyota | Corolla | RWD | N/A | |
| 1986 | BMW | 325es | N/A | 91 Deg. C |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.