Beck Arnley 201-1520 Engine Cooling Fan Switch

Engine Cooling Control for BMW Applications

The Beck Arnley 201-1520 engine cooling fan switch is built for foreign nameplate OE specifications, with form, fit, and function aligned to the original application. It is a direct-fit cooling control component for BMW models that use a 3-pin, two-speed fan switch setup.

Compatible With BMW 318i, 318is, 325i, 325is, 325iX, 325e, 325es, 525i, 530i, 535i, 535is, 635CSi, 735i, 740i, 740iL, 750iL, 840Ci, M5, and M6 applications across the listed model years. This part number is 201-1520.

• OE-style engine cooling fan switch for BMW cooling system service
• 3-pin design for two-speed fan operation on listed applications
• Turns on at 91°C and switches to higher fan speed at 99°C on noted fitments
• Built to match foreign nameplate OE specifications for form, fit, and function
• Beck Arnley part number 201-1520 for catalog and service matching

Detailed Fitment and Function

Beck Arnley 201-1520 is used to control electric engine cooling fan operation on select BMW vehicles, including 1987-1997 BMW 318i and 318is, 1987-1994 BMW 325i and 325is, 1988-1991 BMW 325iX, 1987-1987 BMW 325e and 325es, 1989-1994 BMW 525i, 1994 BMW 530i, 1988-1992 BMW 535i and 1988 BMW 535is, 1987-1988 BMW 635CSi and M6, 1987-1992 BMW 735i, 1993-1994 BMW 740i and 740iL, 1988-1994 BMW 750iL, 1994 BMW 840Ci, and 1988-1992 BMW M5. This switch helps manage fan speed based on coolant temperature thresholds in the original cooling strategy.

This part cross-references common OE-style cooling fan switch applications for BMW service use.

What It Helps Address

• Cooling fan not engaging at the correct temperature
• Fan staying on too long or cycling incorrectly
• Overheating caused by delayed fan activation
• Loss of low-speed or high-speed fan operation on 3-pin systems
• Temperature control issues in BMW engine cooling circuits

Installation Notes and Tips

Verify the connector style, thread size, and temperature calibration before installation. Confirm the vehicle uses a 3-pin, two-speed cooling fan switch arrangement and match the part to the exact BMW model year listed in fitment. Inspect the cooling system for coolant level, wiring condition, and fan relay operation during service.

Quality Assurance

Beck Arnley parts are sourced to meet foreign nameplate OE specifications, with product specialists working with global sourcing partners to support correct application matching and dependable service fitment.