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Description
Genuine OEM Mercedes-Benz Engine Fuse Relay Junction Power Box A1665401550
This is an original factory Mercedes-Benz Engine Fuse Box / Relay Junction Power Distribution Box for the ML-Class W166. It is a used genuine OEM part, removed from a working vehicle and in good working condition at the time of removal.
This unit is designed to distribute electrical power and protect the vehicle's engine electrical circuits through its integrated fuses and relays.
Part Number
- A1665401550
- Mercedes-Benz Engine Fuse Box
- Relay Junction Box
- Power Distribution Box
- Fuse & Relay Module
Compatible Models
- 2013-2015 Mercedes-Benz ML350
- Mercedes-Benz ML-Class W166
- Selected W166 models using the same part number and configuration
Important: Compatibility depends on the exact vehicle year, engine, electrical configuration, options, connectors, and part number. Please compare your original unit before purchasing.
Item Features
- Genuine Mercedes-Benz OEM
- Original factory engine fuse box
- Fuse and relay junction box
- Electrical power distribution unit
- Used OEM replacement
- Removed from a working vehicle
- Good working condition when removed
- Original connectors and housing
- Part Number: A1665401550
Condition
Used – Good Working Condition
This unit was removed from a working vehicle and was in good working condition at the time of removal.
As this is a used automotive electrical part, it may have minor scratches, marks, dust, or normal cosmetic signs of previous use.
Important Information
- Please match part number A1665401550 with your original unit before purchasing.
- Compare the connectors, fuse/relay layout, housing, mounting points, label, and photos.
- Vehicle model and year alone do not guarantee compatibility.
- Fuse and relay boxes can vary depending on vehicle options and electrical configuration.
- The unit may require coding or programming after installation depending on the vehicle.
- We sell the part only and do not provide programming or coding services.
- Professional installation is recommended.
Before Purchasing
Please make sure the part number, connectors, fuse/relay layout, and physical appearance match your existing unit.
If you are unsure about compatibility, please consult a qualified Mercedes-Benz technician before purchasing.
What you see in the listing photos is what you will receive, unless otherwise stated.













