Mercedes W177 W247 Door Brake Stopper Strap Rear Left Right N/O/S A1777306400

Mercedes W177 W247 Door Brake Stopper Strap Rear Left Right is a precision component from the Doors and door panels group, designed to control the opening range of the rear doors and stabilize their position. A properly selected door stopper improves door usability, reduces stress on hinges, and protects the bodywork against uncontrolled impact when opening.

Specifications and technical data

• SKU: A1777306400
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1777306400
• Substitutable numbers: A1777306400, A 177 730 64 00, BG
• Location on the vehicle: Rear, Right, Left
• Category: Doors & Door Skins

Purpose and technical function

The rear door stopper in the Mercedes W177 W247 Door Brake Stopper Strap Rear Left Right model is responsible for the smooth movement of the door leaf during opening and closing. This component stabilizes the door in several operating positions, which facilitates passenger entry and reduces the risk of accidental slamming during gusts of wind or when parked on an incline.

The product is adapted for installation on the rear side, both on the right and left side of the vehicle, allowing for flexible use depending on service requirements. Thanks to its precisely tuned operating characteristics, the stopper works in harmony with the factory hinge and door panel construction, maintaining proper opening geometry.

Installation compatibility and placement

The offered stopper is designed for the rear door axis in the W177/W247 body and can be used on either the right or left side. This solution simplifies part selection during post-accident repairs or when replacing worn-out consumable components.

• Placement on the vehicle: rear – supports rear passenger doors,
• Can be used on the right or left side,
• Operates in direct connection with hinges and door construction.

A component configured in this way helps restore proper door operation when the factory stopper has become worn, mechanically damaged, or corroded.

Performance characteristics and benefits

A properly selected rear door stopper contributes to the daily comfort of using the vehicle. It provides:

• controlled resistance when opening and closing the door,
• stable intermediate positions, making it easier to enter and exit,
• reduced stress on hinges and door panels,
• protection of door edges and adjacent body elements against excessive swinging.

By maintaining the factory door operating geometry, the stopper helps preserve the consistency of the body lines and proper closing, which is important for both acoustic comfort and seal durability.

Component condition and service application

The offered stopper is a pre-owned part, making it an attractive solution for economical repairs where the priority is maintaining functionality within a reasonable budget. This type of component is suitable for:

• post-accident repairs in the rear door area,
• replacing a worn or noisy stopper,
• restoring the correct door movement path after bodywork interventions.

Choosing an original component from the same construction group allows for compliance with the manufacturer's factory specifications and reduces the risk of installation issues.

Expanding the scope of repairs – Mercedes Doors and door panels

If you are planning a comprehensive repair or upgrade of the door area in your Mercedes and need other elements from the same group, such as skins, reinforcements, or additional structural components, check out the available parts in the Mercedes Doors and door panels category.

For vehicle owners interested in a broader approach to modifications and service, including the selection of pre-owned components with higher technical requirements, our guide article on Mini sports exhaust systems may be helpful – you can find it here: Second-hand Mini John Cooper Works Pro sports exhaust – a legal way to get a race-inspired sound and +7 HP.