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Window Motor 2078200542

To Replace:
Mercedes Benz
For Vehicle:

2013-2019 SL500 LH

Part No.:

2078200542

Tinzer No.
19T-L 12V 6P
  • Introduction
  • factory

The 2078200542 is a high-precision electric window regulator motor designed for Mercedes-Benz platforms. TinzerMotor manufactures this motor as a premium-grade replacement part, specifically engineered to provide the high torque and smooth operation required for heavy-duty daily use in professional and commercial fleets.

Technical Information & Application
This motor serves as the electromechanical actuator for the driver-side window lifting system, ensuring consistent power and seamless integration with the vehicle's electronics.
  • Part Number: 2078200542 / A2078200542

  • Primary Application: Designed for Mercedes-Benz E-Class (W212/C207/A207) models and related specialty/commercial chassis. These motors are built for high-utilization environments where long-term durability is essential.

  • Operating Voltage: 12V DC.

  • PositionFront Left (Driver Side).

  • Connector Type: Features a specialized multi-pin connector compatible with the vehicle’s comfort control module, supporting "one-touch" up/down and anti-pinch safety functions.

Interchange / Cross-Reference Numbers
The 2078200542 is recognized across major automotive and premium part catalogs:
  • Mercedes-Benz OEM: A207 820 05 42, 207 820 05 42

  • Brose (Original Manufacturer): 940650-100 (Series)

  • Magneti Marelli: 350103138700

  • Dorman: 742-084 (Equivalent series)


TinzerMotor High Quality & Testing
TinzerMotor is a leading specialist in vehicle automation, ensuring their 2078200542 motor provides "OEM-level" performance with enhanced durability features:
  • Superior Torque Performance: TinzerMotor utilizes high-purity copper windings and upgraded internal carbon brushes. This ensures the motor maintains consistent lifting power even as the vehicle’s window seals age and friction increases.

  • Precision Quiet-Drive: The internal worm gear is CNC-machined to micron tolerances, resulting in nearly silent operation and preventing the premature gear stripping common in low-quality aftermarket alternatives.

  • Rigorous Reliability Testing:

    • 50,000+ Cycle Validation: Each motor design is tested to withstand over 50,000 full-stroke operations, simulating decades of intensive professional use.

    • Environmental Sealing: Every unit is tested to IP67 standards, providing total protection against moisture, humidity, and dust ingress.

    • Safety Integration Testing: Verified to work seamlessly with the vehicle's original anti-pinch software, ensuring immediate reversal if an obstruction is detected.


Please contact: 

Ms Riva  

Wechat/WhatsApp +86 15355970956 

Email: riva@ruishuoautoparts.com


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