BMW F70 F74 F78 X1 U11 Radiator Charge Air Cooler Intercooler B48R 9846917

BMW F70 F74 F78 X1 U11 Radiator Charge Air Cooler Intercooler B48R is an original intercooler designed for the boost system in modern BMW units. Mounted at the front of the vehicle, this component is responsible for consistently lowering the compressed air temperature, which translates to efficient diesel engine operation and repeatable performance. This is a solution for drivers seeking a factory-fitted component rather than universal replacements.

Specifications and technical data

• SKU: 9846917-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 9846917
• Substitutable numbers: 9846917, 17519846917
• Location on the vehicle: Front
• Fuel type: Diesel
• Part type: Intercooler
• Category: Intercoolers

Purpose and Function in the Boost System

The presented intercooler is part of the intake system in BMW diesel engine vehicles, where it cools the compressed air before it is supplied to the cylinders. Mounting it at the front of the body ensures favorable airflow conditions, supporting stable charge temperature and helping to maintain engine unit efficiency across a wide range of loads.

A properly selected intercooler helps to reduce power loss during prolonged load, improves the smoothness of diesel engine operation, and supports even mixture combustion. This is particularly important in modern designs where the boost system operates under high pressure and requires components with precisely matched flow parameters.

Benefits of Using an Original Intercooler

Using a factory intercooler in BMW F-series and X1 U11 models ensures:

• precise fit to factory mounting points and air duct routing,
• maintenance of the air charge cooling characteristics designed by the manufacturer,
• seamless operation with other components of the intake and engine control system,
• reduced risk of leaks resulting from imprecise fitting.

Thanks to this, the boost system can operate under conditions close to factory settings, promoting stable engine operating parameters and predictable vehicle behavior in everyday use.

Mounting Characteristics and Application

The intercooler is designed for installation at the front of the vehicle, in an area of intense airflow. This placement facilitates effective heat dissipation from the boost system, which is particularly important in vehicles used in city traffic and on highways. The design is optimized for cooperation with diesel engines, where maintaining the correct air temperature at high torque is crucial.

As a component from the Intercoolers category, this product is a key link between the turbocharger and the intake manifold. The correct selection of this part is important not only for performance but also for the long-term health of the engine unit, including components such as injectors or the exhaust gas recirculation system.

Condition, Origin, and Operational Aspects

The offered intercooler is a used part, originating from an original BMW system. This type of component is a good choice for drivers who want to maintain the vehicle's factory specifications while optimizing service costs. For intercoolers, it is particularly important that the component is leak-free and maintains proper airflow through the air channels, which translates to trouble-free operation of the boost system.

When replacing, pay attention to the condition of the intake hoses, clamps, and any seals to fully utilize the potential of the newly installed cooler. A comprehensive approach to the intake system helps to reduce boost pressure drops and avoid issues with vehicle dynamics.

Operation in High Temperatures and Additional Materials

An intercooler operating at the front of the vehicle is particularly exposed to variable thermal conditions, especially during the summer. High ambient temperatures can affect the efficiency of the charge air cooling, so it is important to ensure the overall condition of the cooling system and airflow through the front fascia. More practical tips on cooling system operation in hot weather can be found in the guide Summer Heat and the Efficiency of Cooling Systems and Used Coolers.

If you are planning a broader upgrade or service of the boost and cooling system in your BMW, also check out other components from the BMW and BMW M Performance Components and Selection of Used Parts category to choose a configuration suitable for your vehicle's operating characteristics.