
A1646820571 Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $29.99 | Top Pick! Condition is Used, Mercedes X164 ML/GL-CLASS Driver Left Rear Exhaust Muffler Heat Shield 06-12 OEM, shipping cost = $19.49 | 99.8% |
![]() | $64.99 | Condition is Used, Mercedes X164 ML/GL-CLASS Left Right Rear Exhaust Muffler Heat Shield Set 06-12, shipping cost = $19.73 | 99.8% |
| photo | price | summary | rating |
|---|---|---|---|
![]() | $79.84 | Condition is Neu, NEW MERCEDES BENZ SHIELD A1646820571 OEM, shipping cost = $53.41 | 99.1% |
![]() | $89.81 | Top Pick! Condition is Neu, NEW MB SHIELD A1646820571 OEM, shipping cost = $52.25 | 99.2% |
![]() | $108.02 | Top Pick! Condition is Neu, NEW MERCEDES-BENZ M GL-CLASS REAR LEFT OUTER FLOOR HEAT SHIELD A1646820571, shipping cost = $34.83 | 97.4% |

The Mercedes-Benz W164 ML350 ML500 left exhaust heat shield with part number 1646820571 is an essential component of the vehicle's exhaust system. This shield is designed to protect the left side of the vehicle from the extreme heat generated by the exhaust gases.
This heat shield is made of high-quality materials, specifically engineered to provide optimal heat insulation and durability. The shield measures approximately 23 inches in length, 10 inches in width, and 1 inch in thickness, making it a perfect fit for the left side of the exhaust system on ML350 and ML500 models produced between 2006 and 2011.
The shield is installed between the exhaust system and the undercarriage of the vehicle, forming a barrier that prevents the transfer of excessive heat to the vehicle's interior and exterior. This not only ensures the comfort of the passengers but also helps maintain the integrity of the vehicle's components, particularly those that could be damaged by prolonged exposure to high temperatures.
The Mercedes-Benz left exhaust heat shield 1646820571 is a crucial replacement part for ML350 and ML500 models whose original heat shields have deteriorated or been damaged. Installing a new heat shield not only ensures the proper functioning of the exhaust system but also enhances the overall performance and longevity of the vehicle.
In summary, the Mercedes-Benz W164 ML350 ML500 left exhaust heat shield 1646820571 is an essential component of the exhaust system that protects the vehicle from the extreme heat generated by the exhaust gases. This high-quality shield measures approximately 23 inches in length, 10 inches in width, and 1 inch in thickness and is specifically designed to fit ML350 and ML500 models produced between 2006 and 2011. Installing a new heat shield is crucial for maintaining the proper functioning of the exhaust system, ensuring the comfort of the passengers, and enhancing the overall performance and longevity of the vehicle.
Mercedez-Benz W164 ML350 ML500 Left Exhaust Heat Shield (1646820571, 06-11) - A Comprehensive Analysis
Introduction:The Mercedez-Benz W164 ML350 ML500 left exhaust heat shield (1646820571, 06-11) is a critical component of the vehicle's exhaust system. It is designed to protect the left-side exhaust from heat damage and insulate the vehicle's interior from excessive heat. In this analysis, we will discuss the potential advantages and disadvantages of purchasing this part.
Pros:1. Enhanced durability: The exhaust heat shield is designed to withstand the high temperatures generated by the exhaust system. Replacing a damaged shield can help prevent further damage to the exhaust system and potentially save costs in the long run.
2. Improved comfort: The heat shield helps insulate the vehicle's interior from excessive heat generated by the exhaust system. This can make the vehicle more comfortable to drive, especially during hot weather.
3. Enhanced performance: A properly functioning exhaust heat shield can help improve the performance of the vehicle by ensuring that the exhaust gases flow efficiently through the system.
4. OEM part: The part is an original equipment manufacturer (OEM) part, which means it is designed and manufactured by Mercedez-Benz specifically for the ML350 ML500 models. Using an OEM part can help ensure a proper fit and reliable performance.
Cons:1. Cost: The price of the exhaust heat shield can be relatively high compared to aftermarket alternatives. This can be a significant factor for some buyers.
2. Availability: Depending on the location and availability of the part, it may take some time to receive the part and have it installed.
3. Installation complexity: Installing the exhaust heat shield can be a complex process, especially for those without automotive repair experience. It may be necessary to hire a professional mechanic to install the part.
Conclusion:The Mercedez-Benz W164 ML350 ML500 left exhaust heat shield (1646820571, 06-11) is an essential component of the vehicle's exhaust system. While the cost of the part may be a significant factor for some buyers, the advantages of using an OEM part, such as enhanced durability, improved comfort, and enhanced performance, can outweigh the cost. Additionally, a properly functioning exhaust heat shield can help prevent further damage to the exhaust system and improve the overall driving experience.
Recommendation:If you are experiencing issues with the exhaust heat shield on your Mercedez-Benz W164 ML350 ML500, it is recommended that you replace the damaged part with an OEM part. While the cost may be higher than aftermarket alternatives, the benefits of using a properly fitting and reliable OEM part can help ensure the longevity and performance of your vehicle. It is also recommended that you consult with a professional mechanic to ensure a proper installation.
Details:
Please refer to pictures for item condition.
specifications heatnshield:
- for models: W164, Ml350, Ml500
- for years: 2006–2011
- brand: Mercedes
- mpn: A1646820571
- type: Heat Shield
- color: Silver
- material: Aluminum
- universal fitment: No
- placement on vehicle: Left, Rear
payments heatnshield:
- wallet: paypal
- credit card: mastercard
- other
returns heatnshield:
- policy: returns accepted
- paid by: seller
- time: 60 days
shipping heatnshield:
- class: standard
- type: fixed
- transit: 2-7 days
- service: standard
seller heatnshield:
- rating: 100.0%
- # reviews: 19655
- city: east setauket, new york
offer heatnshield:
- in stock #: 5
- sold #: 17
- started: november 6, 2025
- prices: $29.99–$108.02
- item condition:
- Used
- Neu
- options: ship-to-home
- availability: in stock
- best offers: true
general heatnshield:
- category: Auto Parts > Car Truck Accessories > Exhaust Emission Systems > Heat Shields, Wraps Sleeves
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