Exhaust Tip BMW E84 N20 Rear Tailpipe Tip With Active Flap Actuator 7646431

Visual condition of the part

The product shows signs of use visible in the photos.

Exhaust Tip BMW E84 N20 Rear Tailpipe Tip With Active Flap Actuator is an original exhaust system component from the Exhaust pipes and tips group, designed for installation in the rear section of the vehicle. Thanks to the integrated flap actuator, it provides a functional solution for drivers expecting precise control over exhaust flow and sound characteristics. Using this OEM component allows for maintaining the factory operating characteristics of the exhaust system in BMWs with the N20 engine.

Specifications and technical data

• SKU: 7646431
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7646431
• Substitutable numbers: 7646431, 18307646431, 7619985, 18307619985, 7619986, 18307619986
• Location on the vehicle: Rear
• Category: Exhaust Pipes & Tips

Purpose and function in the exhaust system

The described exhaust tip is a component mounted in the rear area of the vehicle, responsible for the final section of exhaust gas discharge and shaping its flow. The use of an active flap with an actuator allows for control over the flow cross-section, which influences:

• changing exhaust system resistance depending on engine load,
• adjusting the sound level to the current driving mode,
• maintaining compliance with factory engine control unit maps.

As a result, the exhaust system maintains its proper operating characteristics, and the vehicle meets the manufacturer's design assumptions regarding acoustic comfort and dynamics.

Construction and key technical features

The exhaust tip with an active flap has been designed as an integral part of the BMW exhaust system, taking into account the geometry of the bumper and exhaust pipe routing. The use of a factory flap actuator allows for:

• proper cooperation with the vehicle's control system,
• stable positioning of the flap in various operating ranges,
• maintaining the tightness and appropriate durability of the mechanism.

The original BMW design ensures proper fitment with other exhaust system components and compatibility with factory brackets and mounts. Thanks to this, the installation process is straightforward, without the need for any modifications to the body structure.

Practical application and benefits of installation

The use of this exhaust tip is particularly important in vehicles that were factory-equipped with an active flap controlled by an actuator. Replacing a worn or damaged element with an original used component allows you to:

• restore the proper operation of the exhaust flow regulation system,
• maintain compliance with the factory operating parameters of the N20 engine,
• preserve the aesthetics of the rear of the vehicle in line with the BMW design.

The used OEM element is a cost-effective solution that also allows you to maintain the original technical specification of the exhaust system, without the need to use aftermarket replacements with uncertain parameters.

Integration with the vehicle and installation area

The exhaust tip with an active flap is designed for installation in the rear zone of the body, in the location originally intended by the manufacturer. A correctly selected element:

• ensures proper exhaust gas routing in the final section of the system,
• maintains proper distances from bumper and chassis components,
• minimizes the risk of unwanted vibrations and resonances.

Thanks to the preservation of the original mounting geometry, it is possible to connect it seamlessly with the remaining sections of the exhaust pipes and ensure stable attachment at the factory mounting points.

Expanding your BMW exhaust system upgrade

If you are planning a comprehensive repair or upgrade of the exhaust system area in your BMW and need other components from the same group, such as additional pipe sections, other tips, or connecting elements, check out the available parts in the BMW exhaust pipes and tips category.

For drivers interested in a broader perspective on car upgrades, the impact of exhaust system components on vehicle characteristics, and practical examples of using used parts, you may find the article describing the evolution of one of the popular sports models helpful – Hot-hatch legend: the evolution of the VW Golf GTI from Mk1 to Mk8 – design changes and VW car parts.