Heat Exchanger BMW F20 F21 F30 LCI B38 B48 Oil Cooler Petrol Engine 8585625

The BMW F20 F21 F30 LCI B38 B48 Oil Cooler is an original lubrication system component designed for BMW gasoline engines with automatic transmissions. It ensures stable heat dissipation from the engine oil, which translates to a safe engine operating temperature and component durability. This is a practical solution for users looking for a factory component with a proven design.

Specifications and technical data

• SKU: 8585625
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8585625
• Substitutable numbers: 8585625, 11428585625, 8574005, 11428574005
• Fuel type: Petrol
• Gearbox type: Automatic
• Category: Oil Coolers & Lines

Purpose and Role in the Lubrication System

The oil cooler in BMW F-series models with B38 and B48 engines is responsible for stabilizing oil temperature during everyday use and dynamic driving. Combined with an automatic transmission and a gasoline engine, it forms a cohesive system that reduces the risk of overheating, oil viscosity drop, and accelerated wear of cooperating elements.

A properly selected oil cooler helps maintain:

• uniform engine component lubrication under high loads,
• stable engine operation across a wide temperature range,
• increased system resistance to long-term highway driving and city traffic jams.

Benefits of Using an Original BMW Oil Cooler

Using a factory oil cooler in BMW F20, F21, and F30 LCI gasoline models ensures compatibility with the factory cooling and lubrication system. The component's design is tailored for specific B38 and B48 units, which translates to:

• correct oil and coolant flow through manufacturer-intended channels,
• compatibility with mounting points and lines in the engine bay,
• maintenance of operating parameters consistent with BMW engineers' specifications.

This reduces the risk of leaks, system bleeding issues, and improper oil cooling that could occur with randomly selected aftermarket parts.

Characteristics of the Used Component

The offered oil cooler comes from the Oil Coolers and Hoses category and is a used part, which helps reduce repair costs while maintaining the original BMW design. This type of component, sourced from disassembly, is often chosen by users who:

• prioritize factory solutions over unreliable aftermarket parts,
• want to maintain the consistency of the cooling and lubrication system with the manufacturer's design,
• seek a reasonable compromise between price and quality.

An additional advantage is the presence of dedicated part numbers and interchangeable numbers in the specifications, which facilitates verification of compatibility with specific engine versions and vehicle model years.

Selection and Compatibility with B38/B48 Engines

When selecting an oil cooler for BMW F-series, it is crucial to match it to the fuel type and transmission type. The presented component is designed for gasoline units paired with an automatic transmission, which is important for hose routing, mounting method, and thermal parameters. Proper selection helps maintain:

• correct oil pressure across the entire RPM range,
• adequate heat exchange between the oil and the cooling system,
• stable engine operation in urban and non-urban conditions.

Before installation, it is advisable to compare the markings with the data in the technical specifications and vehicle documentation to ensure the cooler is correct for the specific engine and transmission configuration.

Technical Support and Additional Materials

To better understand the impact of a functional oil cooler on engine durability and the entire cooling system, we recommend reading the guide on our blog: Engine Cooling System – Overheating, Repair, and Used Coolers. There you will find practical tips on overheating symptoms, diagnostics, and principles for selecting used cooling system components.

If you are planning a comprehensive repair or upgrade of the engine area in your BMW and need other parts from the same group, such as additional oil coolers, oil lines, or mounting elements, check the available parts in the BMW Oil Coolers and Hoses category.