Mercedes-Benz B-Class W245 Fuel Tank Filler Neck Pipe Hose Line A1694700120

Mercedes-Benz B-Class W245 Fuel Tank Filler Neck Pipe Hose Line is an original fuel system component responsible for the safe and leak-proof transport of fuel from the filler neck to the tank. Thanks to its factory geometry and precise fit for the B-Class W245 body, it ensures stable mounting, proper fuel flow, and comfortable refueling without the risk of leaks. It is a practical solution for users who want to maintain the structural integrity of the fuel system in their Mercedes.

Specifications and technical data

• SKU: A1694700120
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1694700120
• Substitutable numbers: A1694700120, A 169 470 01 20, EM
• Category: Fuel Tanks & Filler Necks

Purpose and function in the fuel system

The presented fuel filler neck pipe is a component dedicated to the Mercedes-Benz B-Class W245 model, designed as part of the factory fuel system. It is responsible for:

• transporting fuel from the filler neck to the tank,
• maintaining connection tightness during refueling,
• stable positioning of the pipe relative to the body and the fuel tank.

By maintaining the original design, this component works with factory mounts and seals, which reduces the risk of stress, cracks, and leaks within the fuel system.

Construction and fit for the Mercedes-Benz B-Class W245

The fuel filler neck pipe has been designed specifically for the B-Class W245 body architecture, taking into account the routing of lines, floor geometry, and tank location. The properly selected shape and diameter of the pipe allow for:

• proper fuel flow at various angles of the fuel nozzle,
• reduction of turbulence and fuel backflow during refueling,
• collision-free routing in relation to other chassis installations.

Its original Mercedes origin promotes compatibility with factory clamps, brackets, and seals, which facilitates installation and subsequent operation.

Component condition and service application

The offered fuel filler neck pipe comes from the Fuel tanks and filler neck pipes category and is intended as a service part for fuel system repairs. It will prove particularly useful in situations where:

• the original pipe has suffered from corrosion, mechanical damage, or leaks,
• replacement of the component is necessary after a collision or interference in the fuel tank area,
• you want to maintain the original fuel system specification instead of using aftermarket parts with uncertain fitment.

A properly selected fuel filler neck pipe helps maintain stable operating conditions for the fuel system, which is important for both safety and proper engine performance.

Benefits of using an original fuel filler neck pipe

Using an original fuel filler neck pipe in a Mercedes-Benz B-Class W245 brings a number of practical benefits:

• Factory fit – maintaining compatibility with the body and fuel tank design, without the need for modifications.
• Stable system tightness – reducing the risk of fuel leaks and the ingress of external contaminants.
• Hassle-free installation – the ability to use standard mounting points and seals.
• Consistency with service documentation – easier identification and inspection of the component's condition during maintenance.

For users who value maintaining the original vehicle configuration, this is a technically predictable solution that complies with the manufacturer's specifications.

Selection, diagnostics, and knowledge about the fuel system

When selecting components such as the fuel filler neck pipe, it is worth using the manufacturer's markings and service documentation to ensure full compatibility with your specific B-Class W245 version. Additional information on the construction and maintenance of the fuel system, including the role of the tank, lines, and actuators, can be found in the article Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration, which discusses diagnostics, selection by manufacturer markings, and operating principles.

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 filler hoses, connecting sections, or connection elements at the tank, check out the available parts in the Mercedes fuel tanks and filler neck pipes category.