Air Conditioning Pipe BMW G20 G22 Evaporator Compressor Suction Hose 6999942

Air Conditioning Pipe BMW G20 G22 Evaporator Compressor Suction Hose is an original cabin cooling system component designed for G-generation 3 and 4 Series models. As part of the Air conditioning pipes, hoses, and connectors group, it is responsible for the safe discharge of the refrigerant in the gaseous phase from the evaporator to the compressor, which directly impacts the stable operation of the entire A/C system. Using this genuine BMW OEM component allows for a technically correct repair without compromising on fitment or sealing.

Specifications and technical data

• SKU: 6999942
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6999942
• Substitutable numbers: 6999942, 64536999942
• Category: A/C Hoses & Fittings

Purpose and function in the air conditioning system

The evaporator-to-compressor suction hose in the BMW G20/G22 operates on the low-pressure side of the air conditioning system. Its tasks include:

• transporting the refrigerant in gaseous form from the evaporator to the compressor,
• maintaining proper system tightness,
• ensuring correct compressor operating parameters, which translates into interior cooling efficiency.

Thanks to its factory geometry and proper routing in the engine bay, the pipe does not interfere with other components and maintains adequate resistance to vibrations and temperature changes.

Original BMW craftsmanship

As a BMW brand component, the air conditioning pipe has been designed for specific G20 and G22 bodies, adhering to the manufacturer's rigorous standards. This means:

• precise fitment to factory mounts and brackets,
• compatibility with original air conditioning system connectors,
• appropriate refrigerant flow characteristics.

Using an OEM component is a particularly beneficial solution for accident repairs or A/C system servicing when maintaining the factory configuration without the need for modifications is a priority.

Condition, installation, and service application

The offered pipe comes from disassembly and is marked as used, which allows for an economical yet technically correct repair of the air conditioning system. Before installation, a standard service procedure is recommended, including:

• verifying the tightness of the entire system after installing the pipe,
• replacing seals at the connectors according to the manufacturer's procedure,
• evacuating and refilling the system with the appropriate refrigerant.

Thanks to its original design, the pipe is suitable for use as a replacement part in professional workshops specializing in BMW air conditioning service, as well as in specialized body and mechanical repair shops.

Benefits of using an original air conditioning pipe

Using an original evaporator-to-compressor suction hose in the BMW G20/G22 provides a number of practical benefits:

• Factory fitment – no need to modify the installation; the pipe fits standard brackets and connectors.
• Stable A/C system operation – the correct pipe diameter and length support proper operating pressures and cooling efficiency.
• Operational safety – the original design minimizes the risk of leaks resulting from improper fitment.

This solution is particularly recommended for repairs where the priority is to maintain factory-like parameters and predictable air conditioning system behavior over a long period of use.

If you are planning a comprehensive repair or upgrade of your BMW's air conditioning zone and need other components from the same group, such as low-pressure lines, high-pressure lines, or service connectors, check out the available parts in the BMW air conditioning pipes, hoses, and connectors category.

More about used premium parts

Choosing a used, original air conditioning pipe fits well into the strategy of servicing premium cars using parts from disassembly. This allows for maintaining a high level of quality at reasonable repair costs. If you want to learn more about the advantages of using used components in premium segment cars, such as air conditioning compressors or suspension elements, it is worth reading the article: Used parts for Mercedes – original parts from disassembly.

Additionally, when planning service before the low-temperature season, a practical guide on preparing your car for winter, including checking air conditioning and cabin ventilation system components, may be helpful: Winter essential: which used car parts are worth checking and replacing before the frost?.