Features: Ensures signal management in your vehicle with our high quality Front Signal Acquisition Module Unit, designed to fit specifications for a fit and performances. Crafted from plastic, this Control Unit features technology for precise signal collection and control, maintaining the function of your vehicle's systems. For professional automotive technicians and knowledgeable owners, this module provide solution for diagnosing and addressing front signal issues. A must have for troubleshooting electrical system malfunctions, difficult startups, or signal inconsistencies in models. Upgrades your vehicle reliability with our Unit; an integrated design mean easy installation, restoring your peace on road with every turn. Specifications: Material: Plastic Size: About. 30cm/11.81in Part Number: 1649004101 A1649004101 Applicable Model: for X164 W164 W251 GL320 GL350 GL450 GL500 GL550 ML280 ML300 ML320 ML350 ML420 ML500 ML63AMG R251 R280 R320 R350 R500 R63AMG Package Includes: 1pc Front Signal Acquisition Module note: Please allow 1-2cm errors due to manual measurement. Due to difference between different monitors, the picture may not reflect the item actual color.