Mercedes-Benz W164 X164 Rear Right O/S Exhaust Heat Shielding Plate Diesel

Mercedes-Benz W164 X164 Rear Right O/S Exhaust Heat Shielding Plate Diesel is a factory-original exhaust system component, designed to protect the vehicle body and adjacent sub-assemblies from excessive heat. Thanks to its precise fit for this specific generation of Mercedes SUVs, it ensures stable mounting, an effective thermal barrier, and safer operating conditions for components in the rear of the vehicle. This solution is particularly important in diesel-powered cars, where exhaust gas temperatures are consistently elevated.

Specifications and technical data

• SKU: A1646823071
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1646823071
• Substitutable numbers: A1646823071, A 164 682 30 71, BG
• Location on the vehicle: Rear, Right
• Fuel type: Diesel
• Category: Heat Shields, Wraps & Sleeves

Purpose and function in the exhaust system

The described heat shield is designed for installation in the rear right section of the vehicle, in the immediate vicinity of the exhaust system. Its function is to:

• limit heat transfer from hot exhaust components to the floor and body structure,
• protect cables, mounts, and suspension components located nearby,
• stabilize hot air flow in the rear undercarriage zone.

As a result, the risk of component overheating is reduced, and the exhaust system operates under more controlled temperature conditions, which promotes the long-term durability of the vehicle.

Compatibility with Mercedes-Benz W164/X164 Diesel

The shield has been designed specifically for the Mercedes-Benz W164 and X164 platform with diesel engines. This means that its geometry, mounting points, and profile are matched to the factory exhaust routing and chassis construction of these models. In practice, this translates into:

• secure, repeatable fitment with original brackets,
• no need for structural modifications during installation,
• preservation of the factory concept for exhaust system routing and shielding.

Such fitment is particularly important in premium-class cars, where maintaining the original thermal architecture influences comfort, durability, and operational safety.

Performance characteristics and installation

The element belongs to the Heat shields, connectors, and sleeves group, which highlights its role as a part responsible for temperature management in the exhaust zone. Installation in the rear right part of the vehicle requires access from underneath the car and the use of standard mounting points provided by the manufacturer. A properly installed shield:

• creates a barrier between hot exhaust sections and the floor and interior elements,
• limits local overheating of insulation materials and anti-corrosion coatings,
• supports the maintenance of stable operating conditions for the exhaust system in diesel cars.

The product is used, which in practice means it comes from vehicle dismantling and may show signs of wear, while remaining a functional service solution for cars requiring the replacement of a damaged or missing shield.

Benefits of using an original heat shield

Using a factory heat shield in the rear right part of the exhaust system provides a number of practical benefits:

• Thermal protection of the body – limiting the heating of the floor and structural elements near the exhaust.
• Better operating conditions for suspension components and installations routed in the rear of the vehicle.
• Maintaining compliance with the factory design of the Mercedes-Benz W164/X164 exhaust system.
• A service solution consistent with other heat shield elements in the vehicle.

For users who want to combine technical aspects with a responsible approach to vehicle maintenance, choosing a used part can also be a way to reduce resource consumption. You can find more about the impact of such decisions on the environment and the driver's budget in the article Circular economy in your garage – how choosing used parts from dismantling really supports environmental protection and your wallet?.

Expansion of the Mercedes heat shield system

If you are planning a comprehensive repair or upgrade of the exhaust system area in your Mercedes and need other elements from the same group, such as additional heat shields, muffler covers, or connecting sleeves, check the available parts in the Mercedes heat shields, connectors, and sleeves category.