Mini Cooper One R50 R52 R53 Expansion Tank Cap Coolant Cover Lid 7515499

Mini Cooper One R50 R52 R53 Expansion Tank Cap Coolant Cover Lid is a precisely fitted cooling system component, designed specifically for first-generation Mini models. This used, original cap ensures proper sealing of the tank, pressure stabilization, and safe operation of the cooling system, which translates into more reliable engine performance and reduced risk of leaks. Thanks to its factory design, it is a functional service solution when replacing a damaged or worn cap.

Specifications and technical data

• SKU: 7515499
• Mark: Mini (Genuine OE)
• Condition: Used
• OEM Part Number: 7515499
• Substitutable numbers: 7515499, 17107515499, KD
• Color: Black
• Category: Expansion & Overflow Tanks

Purpose and function in the cooling system

The Mini Cooper One R50, R52, and R53 expansion tank cap is responsible for tightly sealing the tank and maintaining the correct operating parameters of the cooling system. A properly selected cap:

• prevents uncontrolled coolant loss,
• supports the maintenance of appropriate operating pressure,
• reduces the risk of engine overheating,
• stabilizes the operation of the entire system across a wide temperature range.

As an element from the Expansion tanks group, the cap is a key addition to the tank and should be selected with the specific generation of the Mini Cooper One in mind.

Construction, color, and fitment

The cap is made in black, which ensures a neutral, factory look and consistency with other engine bay components. The design has been developed with the following in mind:

• precise fitment with the original Mini expansion tank,
• appropriate rigidity and resistance to temperature changes,
• easy installation and removal during service procedures.

The original Mini branding helps maintain factory cooling system performance parameters and minimizes the risk of compatibility issues.

Product condition and service application

The item is offered as a used part, which is a cost-effective solution for repairing the cooling system in a Mini Cooper One R50, R52, and R53. This type of cap is particularly useful in situations where:

• the original cap has cracked or deformed,
• there are leaks around the expansion tank,
• it is necessary to replace the component with a factory-fitted OEM replacement.

Using an original cap from the same Mini model group allows you to maintain the technical integrity of the vehicle and reduce the risk of cooling system malfunctions.

Benefits of choosing an original Mini cap

By choosing this expansion tank cap, you gain:

• factory fitment for the Mini Cooper One R50, R52, R53,
• a component designed according to the vehicle manufacturer's requirements,
• a service solution that restores the proper tightness of the cooling system,
• an aesthetic, black element that blends well with the engine bay.

This is a practical choice for users who want to keep their car in a technical condition close to factory specifications, without having to resort to random replacements.

If you are planning a comprehensive repair or upgrade of the cooling system area in your Mini and need other items from the same group, such as additional tanks, caps, or related mounting elements, check out the available parts in the Mini Expansion tanks category.

For a better understanding of the importance of original components in modern engines and how to select used OEM parts by identification numbers, it is worth reading an article describing the legendary Audi five-cylinder engine and practical service tips: Audi five-cylinder engine – a legend from Quattro to RS3 and how to take care of it with original Audi parts.