Water Pump BMW G20 G21 G30 G31 Thermostat Coolant Housing Petrol 8678822

Water Pump BMW G20 G21 G30 G31 Thermostat Coolant Housing is a cooling system component designed for BMW vehicles with petrol engines, responsible for precise management of the engine's operating temperature. Thanks to its factory OEM design, it ensures consistency with the original cooling system and stable engine thermal conditions. This is a practical solution for users looking for a proven component for service replacement in modern BMW models.

Specifications and technical data

• SKU: 8678822
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8678822
• Substitutable numbers: 8678822, 17228678822
• Fuel type: Petrol
• Category: Water Pumps

Purpose and function in the cooling system

The presented thermostat is part of the cooling system in G-series BMW vehicles, working with the coolant circuit and components from the Water Pumps group. Its task is to control the flow of fluid depending on the temperature, which allows for maintaining optimal operating conditions for the petrol engine and reducing the risk of overheating or the engine warming up too slowly.

In vehicles from the G20, G21, G30, and G31 family, a properly functioning thermostat is important for the stability of operating parameters, fuel consumption, and the durability of components cooperating with the cooling system. A properly selected component helps maintain a balance between reaching operating temperature quickly and effectively dissipating excess heat during intensive use.

Compatibility with petrol engines

The thermostat has been designed to work with power units powered by petrol fuel, which is important for the thermal characteristics of the entire system. Petrol engines in modern BMWs require precise temperature control to maintain proper operating culture, stable performance, and compliance with exhaust emission requirements.

Thanks to its fitment to the specifics of the cooling system in G20, G21, G30, and G31 platforms, this component allows for maintaining the factory engine operating logic without the need for installation modifications or the adaptation of additional elements. This solution is particularly beneficial for thermostat service replacements in vehicles used on a daily basis.

Product characteristics and condition

The offered thermostat comes from the group of original BMW components and is classified in the Water Pumps category, which reflects its connection to the coolant circuit. The product is in used condition, which means it has been previously operated but can still perform its function as a spare part in the cooling system.

Choosing a used OEM component is a solution that allows for maintaining consistency with the vehicle's factory design while reducing service costs. For many BMW users, this is a practical compromise between quality and budget, especially in the case of elements that must comply with the manufacturer's original specifications.

Selection by numbers and system integration

The thermostat has a dedicated part number and associated interchangeable numbers, which facilitates its identification and selection for a specific engine variant and vehicle model year. This allows for precise matching of the component to the existing cooling system, minimizing the risk of assembly incompatibility.

In service practice, it is important to maintain compliance with OEM markings during replacement, which translates into proper cooperation with other cooling system components, such as the water pump, hoses, or radiator. The use of an original solution promotes stable engine operation across the full range of loads.

Knowledge expansion and parts selection

When planning service work in the engine and fuel supply area, it is worth paying attention to the correct selection of components by OEM numbers and VIN. Detailed information on diagnostics, selection, and operation of fuel supply elements can be found in the article Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration, which organizes key technical issues and helps to better plan vehicle service maintenance.

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 pump bodies, housings, or additional modules cooperating with the coolant circuit, check the available parts in the BMW Water Pumps category.