BMW X3 G01 X4 G02 Gearbox Transmission Oil Cooler Line Flow Pipe 8671664

The BMW X3 G01 / X4 G02 Transmission Oil Cooler Hose is an original drivetrain component responsible for the efficient flow of oil between the transmission and the cooler. It ensures stable operating conditions for the automatic transmission, which translates to its durability and consistent performance in daily use.

Specifications and technical data

• SKU: 8671664
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8671664
• Substitutable numbers: 8671664, 17228671664
• Part type: Oil Cooler Line
• Category: Oil Coolers & Lines

Purpose and Function in the Oil Cooling System

The transmission oil flow hose for BMW X3 G01 and X4 G02 operates in a circuit between the transmission and the oil cooler. Its task is to maintain a stable flow of the working medium, which limits the increase in oil temperature within the transmission and helps preserve proper lubrication parameters.

A properly functioning oil flow line leads to:

• maintaining predictable transmission behavior under load and at high operating temperatures,
• reducing the risk of oil overheating in the automatic transmission,
• smooth gear changes in both urban and highway conditions.

Construction and Technical Characteristics

This hose belongs to the Oil Coolers and Hoses category, meaning it is a specialized component designed for use in lubrication and cooling systems. Its construction is adapted to the pressures and temperatures typical for transmission oil in modern BMW X3 G01 and X4 G02 models.

As a BMW part, it is designed for:

• precise fitment to factory mounting points on the body and transmission,
• appropriate flow diameter ensuring the proper efficiency of the oil cooling system,
• compatibility with the original oil cooler used in the specific powertrain.

Component Condition and Service Application

The offered transmission oil cooler hose is a used part, allowing for economical repair of the system while maintaining the original manufacturer's specifications. This is a practical solution in situations where:

• the existing hose has developed a leak or external corrosion,
• oil leaks are present around the cooler or transmission,
• the component needs replacement after a collision or intervention in the oil cooling system.

Using an original hose from the same product line facilitates installation and reduces the risk of fitment issues common with aftermarket alternatives of uncertain specifications.

Importance of a Functional Transmission Oil Cooling System

A functional oil flow hose is crucial for maintaining the transmission's proper operating temperature. Inadequate cooling can lead to accelerated wear of internal components, jerky gear changes, or the transmission entering limp-home mode. More information on the impact of the cooling system on drivetrain component durability can be found in the article: Engine Cooling System – Overheating, Repair, and Used Coolers.

Other BMW Oil Coolers and Hoses

If you are looking for other BMW oil coolers and hoses to expand or service the lubrication and cooling system in your car, check out our dedicated category: BMW Oil Coolers and Hoses. This will help you easily select compatible parts within the same brand and category.