Mercedes ML W166 Fuse Box F33 Under Front Seat Right O/S A1665401750

Mercedes ML W166 Fuse Box F33 Under Front Seat Right O/S is an original electrical system component designed for installation in the front right interior of the vehicle. As part of the Fuses and fuse boxes group, it is responsible for the organized routing of circuits and the safe power supply of key electrical consumers. Using this OEM component allows for a technically correct repair without interfering with the factory installation architecture.

Specifications and technical data

• SKU: A1665401750
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1665401750
• Substitutable numbers: A1665401750, A 166 540 17 50, A1665452800, A 166 545 28 00
• Location on the vehicle: Front, Right
• Category: Fuses & Fuse Boxes

Purpose and function in the vehicle

The described fuse box is mounted in the front – right side zone, under the front passenger seat. This location provides easier service access and protects the component from direct exposure to external factors. The module acts as a central power distribution point for selected electrical circuits, stabilizing the operation of comfort and safety systems.

Thanks to its factory design tailored to the ML W166 platform, the fuse box works with the original wiring harness and factory connectors, which reduces the risk of installation errors and compatibility issues.

Benefits of using an original fuse box

Using an original Mercedes component in the power distribution area translates into stable operation of the electrical system. The module's design has been engineered for the proper arrangement of fuse and relay sockets, which facilitates diagnostics and potential future servicing.

The most important advantages include:

• factory fitment to the ML W166 electrical architecture in the front right part of the vehicle,
• organized circuit routing and a clear socket layout,
• ability to use existing brackets and mounting points in the floor under the seat,
• reduction of the need for harness modifications or the use of adapters.

Condition and service application

The item is offered as a used fuse box, which represents a reasonable compromise between repair cost and maintaining original build quality. This type of part is particularly useful for damage resulting from flooding, short circuits, or mechanical damage to the module in the passenger seat area.

Replacing the fuse box in the front right interior zone allows for restoring proper circuit power supply without the need to interfere with the vehicle's main harness. When selecting, it is worth paying attention to compatibility with the ML W166 platform and the correct arrangement of connectors and sockets to ensure the installation proceeds smoothly and without additional modifications.

Mercedes fuses and fuse boxes – expansion and repairs

If you are planning a comprehensive repair or upgrade of the electrical system area in your Mercedes and need other elements from the same group, such as additional fuse boxes, distribution modules, or socket housings, check out the available parts in the Mercedes fuses and fuse boxes category.

Expert support for selecting used components

When deciding to use a used component in a critical area of the electrical system, it is worth knowing the broader context of selecting parts from the secondary market. Practical tips on assessing the condition of components, safety rules, and the differences between original parts and replacements can be found in the article Post-accident repair of your car: why are used body parts a better choice than replacements?, the conclusions of which can also be applied to many other groups of sub-assemblies.