Mercedes-Benz M-Class ML W164 Fuel Tank Support Mounting Bar Strut Bracket

The Mercedes-Benz M-Class ML W164 Fuel Tank Bracket is an original structural component designed for the stable mounting of the fuel tank to the body. It provides secure support, proper load distribution, and safe operation of the fuel system under demanding conditions. As part of the Fuel Tanks and Filler Necks group, it is an essential component for repairs and reconstruction of the tank mounting in ML W164 models.

Specifications and technical data

• SKU: A1644750121
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1644750121
• Substitutable numbers: A1644750121, A 164 475 01 21, KZ
• Category: Fuel Tanks & Filler Necks

Purpose and Function in the Fuel System

The fuel tank bracket in the Mercedes ML W164 is responsible for the rigid, controlled mounting of the tank to the body structure. A correctly selected and installed component:

• maintains the fuel tank in its designed working position,
• limits unwanted vibrations and deflections during driving,
• supports the safety of the fuel system under dynamic loads,
• prevents excessive stress in the area of the fuel filler neck, lines, and pipes.

This ensures stable operation of the fuel supply system, and components such as filler necks or fuel lines are less exposed to mechanical damage resulting from improper tank support.

Construction and Fit for Mercedes-Benz M-Class W164

The offered bracket is a structural element designed specifically for the Mercedes-Benz M-Class W164 platform, which translates to factory fitment to the mounting points in the body. The geometry of the beam and the arrangement of the mounting holes are consistent with the solution used in the original fuel tank mounting system.

This fit allows for installation without the need for modifications, maintaining the connection rigidity intended by the manufacturer and compatibility with other components from the Fuel Tanks and Filler Necks group. This is particularly important for repairs after collisions, corrosion, or replacement of the fuel tank with another unit.

Characteristics of a Used Part

The bracket is a used part, meaning it has been dismantled but is still suitable for further use. This type of structural component, when in good condition, allows for the economical restoration of the factory mounting system without the need to opt for more expensive solutions. In practice, this is a beneficial solution for comprehensive fuel system repairs in older ML W164 models.

Choosing an original dismantled bracket helps maintain the structural integrity of the vehicle while limiting service costs, which is important for larger repair scopes that also include the tank, filler necks, and shields.

Importance for the Durability of the Tank and Filler Necks

A correctly selected and installed bracket directly impacts the durability of the fuel tank and associated components. Stable support limits:

• the risk of cracks in the tank mounting areas,
• overloads acting on the fuel filler necks and connections,
• the formation of leaks resulting from the tank operating in an incorrect position.

Replacing a worn or deformed bracket with a functional one is therefore an important step in fuel system repairs, especially when there are signs of corrosion, deformation, or problems with proper tank fitment.

Part Selection by Numbers and Technical Support

The fuel tank bracket for the ML W164 should always be selected based on the manufacturer's catalog data, chassis number, and part designations. This avoids installation problems and ensures compatibility with the specific vehicle version. In case of doubts regarding the selection of fuel system components, it is advisable to use specialist knowledge and technical materials.

You can find extended information on diagnostics, operation, and repair of fuel supply components in the article Fuel System – Injectors, Pumps, and Fuel Tank: Maintenance and Repair, which discusses, among other things, the role of the fuel tank in the entire system and the principles of selecting parts by OEM numbers.

If you are planning a comprehensive repair or upgrade of the fuel system area in your Mercedes and need other components from the same group, such as additional brackets, mounts, or tank accessories, check the available parts in the Mercedes Fuel Tanks and Filler Necks category.