Mercedes W164 W251 Transmission Mount Bearing Suspension Support A2512402518

The Mercedes W164 (2007) Gearbox Mount Bushing is a precisely engineered drivetrain component responsible for stable transmission support and reducing vibrations transmitted to the body. Using the correct gearbox mount in your Mercedes translates to smoother drivetrain operation, improved driving comfort, and reduced stress on other components.

Specifications and technical data

• SKU: A2512402518
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2512402518
• Substitutable numbers: A2512402518, A 251 240 25 18
• Category: Transmission & Drivetrain Mounts

Function and Importance of the Gearbox Mount

The gearbox mount bushing in the 2007 Mercedes W164 plays a crucial role in damping vibrations and stabilizing the transmission's position relative to the vehicle body. A properly selected component:

• limits vibration transfer to the passenger cabin,
• reduces stress on the gearbox housing and drivetrain suspension components,
• enhances drivetrain refinement during acceleration, engine braking, and gear changes.

This results in the driver experiencing smoother, more predictable drivetrain response, while other components operate under more stable conditions.

Why Choose an Original Mercedes Part

An original Mercedes gearbox mount is designed with a specific body style and drivetrain in mind. In practice, this means:

• precise geometric fit to the mounting points on the body and gearbox,
• use of a rubber and metal compound with parameters matching manufacturer specifications,
• consistency with the factory vibration damping characteristics of the Mercedes W164.

This solution helps maintain the vehicle's original driving characteristics, without the risk of excessive vibration transfer or overly soft transmission support. This is particularly important in premium vehicles where driving comfort and handling precision are priorities.

Symptoms of a Worn Gearbox Mount

Replacing the gearbox mount bushing is recommended when characteristic operational symptoms appear, such as:

• noticeable vibrations in the cabin when starting off or at idle,
• clunks or jerks when abruptly accelerating or decelerating,
• a palpable "wobble" during gear changes in automatic or manual transmissions.

Ignoring these symptoms can lead to accelerated wear of other drivetrain components. Using a correctly selected mount helps restore stable gearbox operation and reduce unwanted stress.

Professional Installation and Parts Selection

Given the importance of this component for drivetrain safety and durability, it is advisable to entrust the installation of the gearbox mount bushing to a workshop experienced in servicing Mercedes vehicles. Proper installation includes:

• checking the condition of other engine and gearbox mounts,
• maintaining the correct position of the drivetrain relative to the vehicle body,
• tightening bolts precisely according to manufacturer recommendations.

If you are considering using new or used parts, it is worth consulting a guide that compares different solutions – check out the article on choosing between new and used car parts to make an informed component selection for your vehicle.

Optimizing Service Costs and Selecting Reconditioned Parts

For vehicles used intensively, a sensible strategy may be to combine new original parts with appropriately selected reconditioned components. This helps reduce service costs while maintaining safe operating parameters for the braking and drivetrain systems. If you are interested in the topic of conscious use of used components, refer to the guide on safely choosing original, used brake calipers and optimizing repair costs.

Summary

The Mercedes W164 (2007) Gearbox Mount Bushing is a component that directly affects driving comfort, drivetrain refinement, and the durability of the entire powertrain. By choosing an original Mercedes component and entrusting its installation to a specialized service center, you gain stable gearbox support, reduced vibrations, and predictable vehicle behavior in daily use.