Black ABS Window Master Switch for Benz ML350 W251 X164 GL450 R350 A2518300390
Restore reliable window and mirror operation to your Mercedes-Benz with this direct-fit left-side master switch control unit. Engineered as an aftermarket alternative to the original component referenced as A2518300390, 2518300390, or A 251 830 03 90, the unit seats securely into the standard driver door bezel without requiring custom wiring or adapter harnesses. Constructed from dense black ABS plastic, the push-button mechanism undergoes factory load testing to ensure consistent trigger response across model platforms including the W164, W251, X164, GL320, GL450, GL550, R320, R350, R500, and R63 produced between 2005 and 2012.
Benefits & Practical Tips
- Replicates original switch travel and mirror toggle alignment for seamless dashboard integration.
- Disconnect the vehicle negative battery terminal before prying the door bezel to prevent module communication errors.
- Match your factory part number alongside switch rocker shape before upgrading, as regional markets use varying housing configurations.
Product Specifications
- Material: Impact-Resistant Black ABS
- Reference Part Numbers: A2518300390, 2518300390, A 251 830 03 90
- Mounting Position: Driver Side Left Door Panel
- Dimensions: 20 L × 6 W × 3 H cm | Net Weight: 0.26 kg
- Testing Certification: CCC
Package Includes
- 1× Black ABS Window Master Switch Control Unit (Protectively Packed)
Installation Notes & Reminders
Professional installation is highly recommended as assembly documentation is not included. Use a flat-head tool carefully around the switch bezel edge to avoid scratching interior trim. Factory test the connectors on a bench surface before final door panel reassembly. Visual color representation may shift slightly depending on screen calibration, and manual dimensional checks allow a 1–2 mm manufacturing variance.
All electronic and mechanical equipment, devices and machines sold by InterCyprus to EU countries are CE certified and carry a two year warranty.
Versatile replacement modules and verified OE cross-references shipped through intercyprus.com for buyers who value accurate fitment and dependable support since 2002.