BMW Mini Cooper D R55 R56 W16 Mechanical Coolant Water Pump Timing Belt Pulley

BMW Mini Cooper D R55 R56 W16 Mechanical Coolant Water Pump Timing Belt Pulley is a cooling system component responsible for the stable circulation of coolant in the engine. Thanks to its precise design and fitment for Mini diesel units, it ensures efficient cooperation with the timing drive and proper heat dissipation from the engine block. This solution is intended for users who expect technically correct, factory-spec geometry and reliable cooling system performance.

Specifications and technical data

• SKU: 7805992-1
• Mark: Mini (Genuine OE)
• Condition: Used
• OEM Part Number: 7805992
• Substitutable numbers: 11517805992, 7805992, 11318509744, 8509744, 11317805957, 7805957
• Category: Water Pumps

Application and compatibility with Mini Cooper D R55/R56

The presented water pump has been designed to work with the diesel engine in BMW Mini Cooper D R55 and R56 generation models. The integrated timing belt pulley allows for direct power transmission from the timing system to the pump impeller, which translates into stable pressure and coolant flow throughout the entire circuit. The design intended for this body series allows for the retention of factory mounting points and correct geometry relative to other engine auxiliary components.

Construction and technical characteristics

The BMW Mini Cooper D R55 R56 W16 Mechanical Coolant Water Pump Timing Belt Pulley is based on a classic mechanical drive solution, where the pump impeller is coupled with a gear or pulley connected to the timing system. This solution ensures:

• constant dependence of the pump rotational speed on the engine speed,
• stable coolant flow across the full load range,
• maintenance of factory cooling system operating parameters.

The presence of the timing belt pulley on the pump body reduces the number of separate components in the drive system, which facilitates installation and reduces the risk of assembly errors. Factory pulley geometry allows for proper belt guidance and maintenance of correct tension in the system.

Benefits of using an original Mini water pump

Choosing a water pump from the Water Pumps group dedicated to the Mini Cooper D R55/R56 allows for maintaining the operating parameters specified by the vehicle manufacturer. Key advantages include:

• factory fitment to mounting points in the engine block and timing covers,
• correct positioning of connection ports relative to cooling system hoses,
• maintenance of the proper direction and efficiency of coolant flow,
• consistency with the factory timing drive system design.

Thanks to this, the pump can be used both during standard maintenance and during major service work involving the timing system and cooling system. A properly selected component reduces the risk of engine overheating and accelerated wear of other components.

Part condition and assembly aspects

The offered Mini water pump comes from the used parts segment, which allows for an economical restoration of the cooling system's efficiency while maintaining the original design. Before installation, a standard service procedure is recommended, including checking the mating surfaces, selecting the appropriate gasket, and verifying the condition of the timing belt and other drive components. Proper installation, while maintaining tightening torques and cooling system bleeding procedures, is crucial for the durability of the entire assembly.

Selection by numbers and technical support

The water pump is linked to a specific OEM part number and a set of interchangeable numbers, which facilitates precise identification of the component against Mini service documentation. In case of doubt during selection, it is worth using the VIN or manufacturer's documentation to confirm compatibility with a specific engine version and vehicle model year. For users who want to better understand the principles of selection and diagnostics of power supply components and cooperating systems, the following blog article will be helpful: Fuel system – injectors, pumps and fuel tank: maintenance and regeneration, which discusses a practical approach to identifying parts by OEM numbers.

If you are planning a comprehensive repair or upgrade of the engine area in your Mini and need other components from the same group, such as additional pumps, housings, or drive elements, check the available parts in the Mini Water Pumps category.