Mercedes Vito W639 Seat Buckle Tensioner Belt Rear Left Right N/O/S A6398600669

The Mercedes Vito W639 Right Left Rear Seat Belt Buckle is an original part from the seat belts and parts category, designed for the rear bench of the popular Mercedes van model. The buckle ensures proper fastening of the seat belt on the right or left side of the rear of the vehicle, contributing to a safe and stable belt restraint for passengers.

Specifications and technical data

• SKU: A6398600669
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6398600669
• Substitutable numbers: A6398600669, A 639 860 06 69, KD
• Location on the vehicle: Rear, Right, Left
• Category: Seat Belts & Parts

Vehicle Application and Placement

The presented buckle is a component installed in the rear part of the cabin, on the right or left side. This placement allows for the operation of the outer seating positions on the rear bench, providing passengers with the ability to properly fasten their seat belts.

Thanks to its precise fit with the interior structure of the Mercedes Vito W639, the buckle integrates with the factory mounting points, facilitating installation and maintaining compatibility with the vehicle's original safety system.

Technical and Functional Characteristics

The rear seat belt buckle is designed as part of the passive safety system, responsible for securely locking the belt buckle and its quick release when needed. The construction is adapted for intensive use in a commercial vehicle like the Mercedes Vito, where interior components are often subjected to increased loads.

Key functional features include:

• Stable mounting at the factory designated point on the rear bench.
• Compatibility with original seat belts used in the Mercedes Vito W639.
• Ergonomic design of the release button, facilitating belt operation by passengers.

Condition, Origin, and Benefits of Using a Used Part

The buckle is sourced from a dismantled vehicle and is offered as a used part, allowing for economical repair of the safety system while maintaining the original manufacturer's specifications. Choosing this solution is particularly beneficial for professionally operated vehicles where reasonable maintenance costs are crucial, while adhering to factory solutions.

Using original, used seat belt system components allows for:

• maintaining the structural integrity of the entire belt mounting system,
• preserving the factory mounting geometry in relation to the seats and bodywork,
• reducing service costs while maintaining appropriate manufacturing quality.

To better understand how used components affect the operation of older vehicles, check out the article Second Life for Youngtimers – How Used Car Parts Revitalize Cars from 1998–2012, which describes practical scenarios for upgrades and repairs using parts from dismantled vehicles.

Practical Service Application

Replacing the rear seat belt buckle in the Mercedes Vito W639 is a typical service operation performed after mechanical damage, wear and tear, or in the event of post-accident repairs. Using an original buckle dedicated to the rear of the vehicle on the right or left side restores the full functionality of the seat belt system without the need for interior modifications.

In workshop practice, such a part is chosen when:

• there are issues with proper belt buckle locking or problems with its release,
• the buckle has sustained mechanical damage (cracked housing, broken elements),
• it is necessary to restore the completeness of the safety system after interior disassembly or bodywork repairs.

Other Seat Belts and Parts for Mercedes

If you are looking for other items from the seat belts and parts category dedicated to Mercedes vehicles, check out the Mercedes seat belts and parts available in our store to select compatible components for your model.

Why Choose Used Seat Belts and Parts

Choosing used components from the seat belts and their accessories category is a sensible compromise between cost and maintaining original manufacturer specifications. In many cases, this solution allows for quick restoration of vehicle functionality without excessively burdening the service budget.

If you are considering whether new or used components would be a better choice, the guide Car Parts – New or Used? Comparing Costs, Quality, and Durability may be helpful, discussing differences in durability, cost-effectiveness, and availability of components.