BMW E90 E91 E92 335d M57N2 Charge Air Cooler Intercooler Radiator 7800682

BMW E90 E91 E92 335d M57N2 Charge Air Cooler Intercooler Radiator is an original intake system component, designed specifically for the powerful diesel engines of the BMW 3 Series. This used OEM part ensures a factory fit while providing a cost-effective solution for drivers focused on maintaining engine efficiency. By preserving the original airflow geometry, the intercooler supports stable turbocharger operation and correct intake air temperatures.

Specifications and technical data

• SKU: 7800682
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7800682
• Substitutable numbers: 17517800682, 7800682, BG
• Category: Intercoolers

Function and role of the intercooler in the BMW 335d M57N2

The air cooler in the M57N2 engine is responsible for lowering the temperature of the compressed air from the turbochargers before it enters the intake manifold. A lower air charge temperature improves mixture density, ensures stable power, and reduces the risk of engine knocking. In high-performance diesels like the 335d, a functional intercooler is essential for engine durability and consistent performance.

By using an original air cooler, you maintain factory flow parameters, which is particularly important with stock engine control software and modifications within the manufacturer's specifications. A properly selected intercooler helps maintain stable operating temperatures across a wide range of loads.

Design and fitment for the BMW 3 Series E90/E91/E92

The presented air cooler has been developed for the front-end architecture of the BMW E90, E91, and E92 with the 335d M57N2 engine. This ensures correct placement of ports, mounting points, and compatibility with factory intake hoses and bumper support elements. The original BMW design facilitates installation without the need for modifications, cutting plastics, or using additional adapters.

Thanks to the retention of stock dimensions and shape, the intercooler works seamlessly with the factory cooling system and air ducts, promoting even airflow during driving. This solution is particularly beneficial for users expecting predictable vehicle behavior in both city traffic and dynamic highway driving.

Used condition and operational aspects

The offered air cooler comes from the secondary market, which allows for reduced repair costs while maintaining the manufacturer's original specifications. A used OEM component is a good choice when the existing intercooler has suffered mechanical damage, leaks, or wear. Replacing it with a functional original part restores proper airflow in the intake system and helps eliminate power drops associated with leaks.

Before installation, a standard inspection of the intake system – hoses, clamps, and connections – is recommended to avoid secondary leaks. For modified vehicles, it is also worth verifying the condition of the turbochargers and the overall state of the cooling system to fully utilize the potential of the newly installed air cooler.

Benefits of using an original air cooler

Choosing an original intercooler for the BMW 335d M57N2 offers a number of practical advantages:

• factory fit for the E90/E91/E92 body without additional modifications,
• retention of stock airflow parameters and engine performance characteristics,
• consistency with other intake and cooling system components,
• cost-effective repair through the use of secondary market parts.

If you are planning comprehensive maintenance of the cooling and intake system in your BMW, it is worth expanding your knowledge on the impact of operating temperature on engine durability – the article on engine overheating and the role of efficient radiators in BMW and other car brands will be helpful.

Practical installation tips and part selection

When selecting an air cooler for a BMW 3 Series with an M57N2 engine, it is crucial to verify compatibility with the specific body version and engine unit. It is recommended to use the manufacturer's markings and interchangeable part numbers visible in the technical specifications to avoid installation issues. Consistency of markings between the old and new part significantly speeds up the replacement process.

If you are simultaneously servicing other components responsible for cabin thermal comfort, the guide on the selection and maintenance of air conditioning and heating components in a car, which discusses a practical approach to used OEM subassemblies, may also be helpful.