HomeStandard Ignition TS-578 Engine Cooling Fan Switch
Part #: TS-578

Standard Ignition TS-578 Engine Cooling Fan Switch

9 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: BMW, 328i and M3
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Reliable Engine Cooling Fan Switch for BMW 328i and M3

The Standard Ignition TS-578 Engine Cooling Fan Switch is designed to maintain optimal engine temperature in BMW 328i and M3 models. This plug-in switch features a durable metal housing and a toggle actuation style to ensure consistent performance under demanding conditions.

Key Features of the TS-578 Engine Cooling Fan Switch

  • Attachment Method: Plug in for easy connection
  • Color/Finish: White and gold for corrosion resistance
  • Connector: Female, oval shape with one connector
  • Terminal: Three male pin terminals for secure electrical contact
  • Thread Size: 14mm x 1.50 for precise fitment
  • Voltage: 12 volts, compatible with standard automotive electrical systems
  • Switch Actuation Style: Toggle with oval shape
  • Open at Idle: Yes, allowing proper fan operation during engine idle
  • Housing Material: Metal for durability and heat resistance

Detailed Description of the Standard Ignition TS-578

The TS-578 Engine Cooling Fan Switch from Standard Ignition is engineered to regulate the operation of the cooling fan in BMW 328i and M3 vehicles. Its metal housing provides robust protection against heat and mechanical stress, while the plug-in attachment method simplifies installation. The switch features a toggle actuation style and is designed to open at idle, ensuring the cooling fan engages appropriately to prevent engine overheating. The female oval connector and three male pin terminals provide reliable electrical connections, and the 14mm x 1.50 thread size guarantees a secure fit in the cooling system assembly.

Common Applications and Issues Addressed

  • Prevents engine overheating by controlling cooling fan activation
  • Replaces faulty or worn engine cooling fan switches in BMW 328i and M3
  • Restores proper fan operation during engine idle conditions
  • Eliminates intermittent fan operation caused by electrical connection issues
  • Ensures consistent engine temperature regulation for improved performance

Installation Notes and Tips

Installation of the Standard Ignition TS-578 requires no additional wiring harness or hardware. The plug-in design allows for straightforward replacement of the existing cooling fan switch. Ensure the engine is cool before removal to avoid injury. Verify the 14mm x 1.50 thread size matches the vehicle’s mounting point. Tighten securely but avoid over-torquing to prevent damage to the switch or mounting threads.

Quality Assurance and Warranty

Standard Ignition parts are manufactured to meet or exceed OEM specifications for fit, form, and function. The TS-578 Engine Cooling Fan Switch undergoes rigorous quality control to ensure reliable operation in BMW 328i and M3 vehicles. Warranty coverage details should be confirmed with the product documentation or supplier.

BrandStandard Ignition
Part NumberTS-578
Attachment MethodPlug in
Bulb IncludedNo
Color/FinishWhite, gold
Connector GenderFemale
Connector Quantity1
Connector ShapeOval
Hardware IncludedNo
Housing MaterialMetal
Mounting Bracket(s) IncludedNo
Open at IdleYes
Overall Width (mm)16.002
Switch Actuation StyleToggle
Switch ShapeOval
Terminal GenderMale
Terminal Quantity3
Terminal TypePin
Thread Size14mmx1.50
Voltage12
Width - Inches0.63
Wire Quantity0
Wiring Harness IncludedNo

This part fits 9 vehicles. Search below:

YearMakeModelPositionNotes
1999BMW328iN/A
1999BMWM3N/A
1998BMW328iN/A
1998BMWM3N/A
1997BMW328iN/A
1997BMWM3N/A
1996BMW328iN/A
1996BMWM3N/A
1995BMWM3N/A

* 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:

61318363677FS328SW3012TFS693TS-578

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.