BMW 1 2 3 Series F20 F21 F22 F30 LCI B58 Engine Cooling Radiator Hose 8662842

BMW 1 2 3 Series F20 F21 F22 F30 LCI B58 Engine Cooling Radiator Hose is an original cooling system hose designed for BMW 1, 2, and 3 Series models with the B58 engine after the F20/F21/F22/F30 LCI facelift. This component belongs to the Cooling system pipes and hoses group and serves as a critical connection between the radiator and other coolant circuit components, ensuring stable engine operating conditions. Using an OEM component is a sensible choice for drivers looking for a technically precise fit at an attractive price.

Specifications and technical data

• SKU: 8662842
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8662842
• Substitutable numbers: 8662842, 17128662842, EM
• Category: Coolant Hoses

Purpose and function in the cooling system

The presented radiator hose is designed specifically for the B58 engine cooling system in F20, F21, F22, and F30 facelift body versions. It is responsible for the safe transport of coolant between the radiator and engine components, which translates into maintaining the optimal operating temperature of the power unit and protection against overheating in both city and highway driving conditions.

Thanks to its factory fit for this specific BMW generation, the hose maintains the correct routing geometry, minimizes the risk of abrasion and leaks, and is compatible with original clamps and connectors.

Benefits of using an original BMW hose

Using an original cooling system hose for the B58 engine provides a number of practical benefits:

• Precise fit for the facelifted BMW 1, 2, and 3 Series cooling system, with no modifications required.
• Properly selected diameter and shape ensure correct coolant flow.
• Compatibility with factory mounts and connectors reduces installation time.
• Stable cooling system operation supports the longevity of the B58 unit and other thermal components.

Choosing a used OEM component allows you to maintain the factory operating characteristics of the system while reducing service costs compared to new aftermarket replacements.

Condition, installation, and service application

The offered hose comes from dismantling and is classified as a used original BMW part. Such components are frequently chosen by professional workshops and informed users who expect factory fitment and predictable performance during operation. Installing this hose in place of a worn or damaged part restores proper coolant circulation and helps eliminate leaks and pressure drops in the circuit.

Before installation, a standard service procedure is recommended: checking the connectors and clamps, as well as bleeding the cooling system after replacement. This ensures that the newly installed hose can fully utilize its flow properties and provide stable engine operation across a wide range of loads.

Technical support and cooling system insights

During periods of high temperatures, it is particularly important to maintain the efficiency of the entire cooling system – from hoses and the radiator to the fans. If you want to better understand how summer conditions affect the coolant circuit and when it is worth opting for used components, check out our guide Summer heat vs. cooling system: used radiators and fans as a guarantee of savings.

Expanding your BMW cooling system upgrade

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 additional pipes, return hoses, or flexible sections connecting the radiator to the engine, check out the available parts in the BMW cooling system pipes and hoses category.