BMW 5 6 7 Series E60 E63 E65 N62 1 Petrol Engine Water Pump Pulley 7504077

BMW 5 6 7 Series E60 E63 E65 N62 1 Petrol Engine Water Pump Pulley is a component from the Tensioners and pulleys category, designed for the accessory drive system in N62 petrol engines used in BMW 5, 6, and 7 series models. This is a used OEM component that allows for the restoration of proper water pump drive operation and stable torque transmission from the crankshaft to the engine accessories. By maintaining factory geometry and a precisely matched working profile, the pulley ensures precise cooperation with the accessory belt and other system components.

Specifications and technical data

• SKU: 7504077-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7504077
• Substitutable numbers: 11517504077, 7504077
• Fuel type: Petrol
• Offset (ET):
• Category: Tensioners & Pulleys

Purpose and function in the accessory drive system

The water pump pulley in the N62 engine is responsible for transferring the drive from the accessory belt to the pump impeller, which enables proper coolant circulation in the power unit. In petrol-powered BMW E60, E63, and E65 vehicles, the stable operation of this component has a direct impact on:

• maintaining the correct engine operating temperature,
• even loading of the accessory belt,
• reducing vibration and noise in the front accessory drive area,
• the service life of water pump bearings and adjacent idler pulleys.

A well-chosen pulley from this group of components helps avoid belt slippage, unwanted vibrations, and premature wear of cooperating elements.

Compatibility with the N62 engine and petrol system

The presented pulley has been designed to work with the N62 engine in petrol versions, which means it is matched to the load characteristics and rotational speeds typical for this unit. The component's design takes into account:

• mounting geometry specific to the N62 water pump,
• a working profile adapted to the belt used in this system,
• appropriate rigidity, limiting deformation at high speeds.

As a result, the pulley can be used as a replacement for the factory component in case of wear, mechanical damage, or the need to restore the proper operation of the cooling system.

Performance characteristics and advantages of use

As a part from the Tensioners and pulleys group, the water pump pulley works with the tensioner and other idler pulleys, creating a coherent accessory drive system. Using an original BMW solution allows for:

• maintaining the factory belt routing,
• reducing the risk of the belt slipping or jumping during load changes,
• maintaining the force distribution in the system as intended by the manufacturer,
• easier diagnostics of potential faults in the future.

The used OEM component is an attractive option in situations where a combination of functionality and service cost control is important, while maintaining compliance with factory design assumptions.

Condition, verification, and installation aspects

The item is offered as a used part, which in practice means it has been removed from a vehicle and verified for further use. Before installation, a standard service procedure is recommended, including checking the working surface for excessive wear, cracks, and any mechanical damage. A correctly selected pulley allows for installation in place of the factory component without the need for modifications to the accessory system structure.

It is worth combining the pulley replacement with an inspection of the belt, tensioner, and adjacent pulleys to minimize the risk of needing to work in this area again in the near future and to ensure the consistent operation of the entire system.

Service expansion and educational materials

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 pulleys, idler pulleys, or belt tensioners, check out the available parts in the BMW Tensioners and pulleys category.

When planning service work within the engine accessories, it is also worth paying attention to the charging system. Practical tips on selecting and operating components in this area can be found in the article When is it worth replacing an alternator with a used one: a practical guide for drivers, which helps to better plan the scope of repairs and make informed choices when selecting used parts.