BMW E39 E46 E60 E61 E65 E53 E83 Radiator Cap 1742231

BMW E39 E46 E60 E61 E65 E53 E83 Radiator Cap 1742231 is an original cooling system component designed for a wide range of BMW models. This used cap, categorized under Caps, ensures proper sealing of the reservoir and stable operating conditions for the coolant. It's a practical solution for drivers seeking OEM parts with a proven design, tailored to specific BMW generations.

Specifications and technical data

• SKU: 1742231
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 1742231
• Substitutable numbers: 17117639022, 7639022, 17111712492 17110152374, 17111742231 17111712669, 1712492 0152374, 1742231 1712669
• Category: Caps

Purpose and Compatibility

The radiator cap is designed for BMW models from the E39, E46, E60, E61, E65, E53, and E83 series, allowing for application in many popular engine configurations of these generations. Thanks to its factory origin, the proper operating parameters of the cooling system are maintained, and installation is predictable and repeatable.

The component functions as a sealed cap for the cooling system reservoir, maintaining the correct operating pressure and reducing the risk of uncontrolled coolant loss. This solution supports stable engine operating temperatures and reduces the load on other cooling components.

Construction and Technical Function

The BMW radiator cap is constructed as a precise cap with a built-in pressure valve that responds to changes in temperature and pressure within the system. The appropriately selected valve characteristics enable:

• controlled release of excessive pressure,
• maintenance of stable coolant operating conditions,
• protection of hoses, the radiator, and the expansion tank from overload.

Thanks to its factory fit to the reservoir's thread and seat, the cap ensures proper sealing when tightened, and its design facilitates servicing, for example, during fluid changes or system bleeding.

Condition, Origin, and Benefits of Use

The offered radiator cap is a used BMW part from the aftermarket, allowing for a lower repair cost while maintaining original construction. Compared to aftermarket alternatives, an OEM part typically interacts better with the factory reservoir, leading to more stable cooling system operating parameters.

Choosing a used BMW radiator cap is a sensible solution when:

• the current cap does not maintain pressure or shows leaks,
• overheating issues arise due to incorrect valve operation,
• you want to maintain consistency with original cooling system components.

Before installation, a standard visual inspection of the component and the reservoir's thread is recommended to ensure proper seating and sealing after tightening.

Practical Installation and Operational Tips

When working with the cooling system, observe basic safety principles – only unscrew the cap when the engine is cold to avoid sudden pressure increases and the expulsion of hot fluid. After installation, it's advisable to monitor the fluid level and any signs of leaks around the reservoir to quickly identify any irregularities.

Regularly checking the condition of the radiator cap is a simple maintenance task that can significantly extend the lifespan of the entire cooling system. In case of noticeable mechanical damage, worn seals, or problems maintaining pressure, replacement with a functional part is recommended to reduce the risk of engine overheating.

Other BMW Caps and Used Parts Guide

If you are looking for other BMW caps tailored to your model, check out the BMW caps available in our store to select the appropriate finishing and service elements. For drivers who want to make informed choices in the used parts market, we have also prepared a practical guide – find more information in the article Used Parts – Your Guide to the Best Deals in the Automotive Store, where we discuss how to safely choose used components and maintain your car's performance.