BMW 1 3 Series F20 F21 F30 F31 LCI M140i 340i Heat Resistant Plate 7643179

BMW 1 3 Series F20 F21 F30 F31 LCI M140i 340i Heat Resistant Plate is an original component from the Heat shields, connectors and sleeves group, designed by BMW to ensure stable operation of the turbocharging system. This precisely fitted shield helps limit the impact of high turbocharger temperatures on adjacent components, which promotes safe operation of the engine unit.

Specifications and technical data

• SKU: 7643179
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7643179
• Substitutable numbers: 11657643179, 7643179, EM
• Category: Heat Shields, Wraps & Sleeves

Purpose and function of the turbocharger heat shield

The turbocharger heat shield in BMW F-series models plays a key role in controlling heat distribution within the engine bay. It limits thermal radiation from the hot side of the turbine to sensitive elements such as hoses, wiring harnesses, or plastic housings, reducing the risk of overheating. As a result, the turbocharging system can operate under more consistent temperature conditions, which promotes stable performance and improves vehicle comfort.

Benefits of using an original BMW heat shield

Using an original shield from the Heat shields, connectors and sleeves group ensures a proper fit to the turbocharger and the mounting points on the chassis. The component has been designed for the specific geometry of the engine unit, which means it:

• ensures predictable heat flow management around the turbocharger,
• limits local overheating of adjacent components,
• helps maintain proper operating conditions in the engine bay under load,
• supports the durability of components located near the exhaust system.

For the user, this means more stable operating conditions and a lower risk of additional repairs resulting from excessive component heating.

Characteristics of the used component

The offered BMW turbocharger heat shield comes from the secondary market, which allows for combining reasonable costs with the preservation of the manufacturer's original design. The used component retains its factory geometry and mounting method, ensuring that installation is straightforward for the mechanic. In practice, this enables efficient replacement of a worn or damaged shield without the need for modifications to adjacent components.

Installation and fitment in the engine bay

The turbocharger heat shield is designed to operate in close proximity to hot exhaust system parts, which is why its shape and mounting method are strictly matched to the architecture of the engine unit in BMW F-series models. A correctly installed shield:

• creates a thermal barrier between the turbocharger and auxiliary components,
• limits the impact of high temperatures on electrical harnesses and hoses,
• helps maintain a more even heat distribution in the engine bay.

By maintaining the original BMW design, the mechanic can use factory mounting points, which simplifies the service process and reduces the risk of improper shield positioning relative to the turbocharger.

Expansion of the BMW thermal protection system

If you are planning a comprehensive repair or upgrade of the engine area in your BMW and need other elements from the same group, such as shields, connectors, or sleeves, check out the available parts in the BMW Heat shields, connectors and sleeves category.

Support in selecting used components

When working with secondary market components, especially in the engine area, it is worth paying attention to the compatibility of markings and the fitment for the specific vehicle configuration. Additional tips on the safe selection of used components, how to verify compatibility, and practical aspects of installation can be found in the Global Parts guide: Used automotive electronics on board – why is it worth choosing second-hand ECU modules and sensors?.