BMW F45 F46 F48 Mini F54 F55 F56 F57 B48C Intercooler Charge Air Cooler 8645761

BMW F45 F46 F48 Mini F54 F55 F56 F57 B48C Intercooler Charge Air Cooler is an original forced induction system component designed for modern B48C engines in selected BMW and MINI models. As part of the Electronic control modules and controllers group, it works with the engine management system, stabilizing boost performance parameters and intake air temperature. This used OEM component allows you to maintain factory engine performance characteristics while offering an excellent cost-to-quality ratio.

Specifications and technical data

• SKU: 8645761
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8645761
• Substitutable numbers: 8645761, 17518645761
• Category: ECUs & Computer Modules

Purpose and role in the forced induction system

The intercooler charge air cooler in the version dedicated to the B48C unit is responsible for effectively cooling compressed air before it is delivered to the cylinders. In practice, this translates into:

• more stable boost pressure across the entire rev range,
• maintaining the correct intake air temperature,
• better performance repeatability during dynamic driving,
• support for the engine control unit, which can control the fuel mixture more precisely.

Thanks to this, the forced induction system in BMW F-series and MINI models equipped with the B48C engine maintains parameters close to factory specifications, which is particularly important for city and highway driving.

Compatibility with BMW and MINI models

The presented intercooler charge air cooler has been designed to work with BMW F45, F46, F48 and MINI F54, F55, F56, F57 platforms equipped with the B48C unit. This ensures compatibility in terms of:

• geometry of mounts and intake system connections,
• compatibility with the factory engine control unit,
• airflow consistent with the manufacturer's specifications.

Choosing an original component from this group helps avoid problems with leaks, controller errors, or a drop in forced induction system efficiency.

Characteristics of the used component

As a used item, the intercooler charge air cooler has been selected based on its suitability for further operation. This type of part is particularly attractive to users who:

• want to restore proper forced induction system operation without investing in a new component,
• expect to maintain the original engine performance characteristics,
• are looking for a solution consistent with BMW and MINI factory specifications.

Choosing an original intercooler from the secondary market reduces the risk of mismatching, which is common with aftermarket replacements of unverified quality.

Support with selection by OEM number

When purchasing this type of element, it is crucial to match it by OEM number and engine unit specification. If you want to streamline the selection process and check how to verify part compatibility with your car step-by-step, use the advice provided in the article: how to choose the right car part by VIN and OEM number. This is practical support when planning the replacement of components in the forced induction system.

Related components and control system expansion

If you are planning a comprehensive repair or upgrade of the engine control area in your BMW and need other elements from the same group, such as controllers, engine management modules, or controllers working with the forced induction system, check the available parts in the BMW electronic control modules and controllers category.

For a comparison of how premium manufacturers approach maintaining a car's character, you can also read an article describing how original components influence the Audi brand DNA: Audi and pure emotion – how used parts help maintain the brand's DNA. This provides good background information when making decisions about choosing original components for premium class cars.