Mercedes SLK R171 Seat Belt Lower Tensioner Front Right O/S Buckle A1718600669

Mercedes SLK R171 Front Right Seatbelt Pretensioner is an original part from the Seatbelts and Parts category, designed for installation on the front right side of the vehicle. This is a precisely engineered safety system component that restores the proper functioning of the seatbelt after a collision or malfunction.

Specifications and technical data

• SKU: A1718600669
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1718600669
• Substitutable numbers: A1718600669, A 171 860 06 69
• Location on the vehicle: Front, Right
• Category: Seat Belts & Parts

Seatbelt Pretensioner Purpose and Function

The seatbelt pretensioner in the Mercedes SLK R171 model is responsible for rapidly tightening the seatbelt against the driver's or passenger's body in the event of a collision. This limits uncontrolled body movement and reduces the risk of serious injury. The presented component is dedicated for installation on the front right side, ensuring proper fit with the seat structure and factory mounting points.

As part of the passive safety system, the pretensioner works in conjunction with the seatbelt and airbag control systems. A correctly selected and functional component is crucial for maintaining the factory level of protection intended by the vehicle manufacturer.

Original Mercedes Quality in Seatbelts and Parts

The pretensioner has been designed by the manufacturer with a specific model in mind, ensuring full structural compatibility with the factory safety system. Appropriate mounting shapes, mechanism length, and operating geometry guarantee:

• secure fit to the seat and body on the front right side,
• proper interaction with the seatbelt and its retractor,
• stable operation in emergency situations, in line with Mercedes' design principles.

Choosing an original pretensioner instead of an aftermarket alternative helps maintain consistency with other safety system components, which is important for both user comfort and predictable vehicle behavior during a collision.

Vehicle Placement and Installation Aspects

The presented pretensioner is intended for installation on the front right side of the vehicle. This means its geometry, cable length, and mounting method are optimized for:

• ergonomic seatbelt routing relative to the seat and body pillar,
• correct connection to the safety system's electrical installation,
• stable anchoring in the factory mounting points in the floor and seat structure.

Such a fit facilitates installation and reduces the risk of errors, which is particularly important for safety-critical components. Proper pretensioner placement also ensures the correct sequence of operation in conjunction with airbags and other system components.

Why Use a Dedicated Seatbelt Pretensioner

Replacing the pretensioner with a component dedicated to a specific model and side of the vehicle allows for the preservation of:

• factory activation parameters of the safety system,
• consistency with the seat structure and seatbelt routing,
• appropriate interaction with the airbag system's control electronics.

This solution is particularly recommended after the SRS system has deployed, when a professional reconstruction of the safety system according to the vehicle manufacturer's specifications is necessary.

Mercedes Seatbelts and Parts – Selecting the Right Components

If you are looking for other components from the Mercedes Seatbelts and Parts category, such as pretensioners, retractors, or complete seatbelts for various Mercedes models, check out our dedicated offer: Mercedes Seatbelts and Parts. This will help you more easily select components compatible with your car's specific model and year.

Safety and the Selection of Used Components

When assembling a safety system, it's useful to know the differences between standard components and those with enhanced specifications used in sport versions. If you are interested in how manufacturers design reinforced body, suspension, or safety system components for high-performance cars, an article on our blog might be helpful: BMW M Performance: What's the Difference Between BMW M and Standard Components?. This will help you better understand the importance of using correctly selected parts even in everyday cars.