BMW X3 Z4 Series E83 2.5i 3.0i E85 2.0i Bracket Emission Control Air Pump

The BMW X3 / Z4 Secondary Air Injection Pump Bracket is an original mounting component designed for BMW X3 E83 2.5i / 3.0i and BMW Z4 E85 2.0i models. It ensures stable, factory-standard mounting of the secondary air pump, contributing to the proper functioning of the exhaust emission reduction system and maintaining optimal engine performance. This solution is dedicated to users who expect precise fitment, OEM compliance, and hassle-free installation.

Specifications and technical data

• SKU: 3401027
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 3401027
• Substitutable numbers: 11723401027, 3401027, EM
• Category: Other Exterior Parts & Accessories

Purpose and Technical Function

The presented bracket is a component of the mounting system for the secondary air pump, responsible for supporting the emission control system in BMW gasoline engines. Its tasks include:

• maintaining the pump in a stable position relative to the engine block and accessories,
• minimizing vibrations and stresses acting on the pump housing,
• preserving the correct positioning of air connectors and hoses,
• supporting the proper operation of the emission system under driving conditions.

Thanks to its design, which aligns with factory solutions, the bracket works with original mounting points in the engine bay, reducing the risk of leaks, incorrect hose routing, or accelerated pump wear.

Compatibility with BMW Models

The bracket has been designed for specific engine configurations in popular mid-range and sports BMW models. This specifically applies to:

• BMW X3 E83 with 2.5i and 3.0i gasoline engines,
• BMW Z4 E85 with a 2.0i gasoline engine.

This focused application translates to high geometric compatibility with the factory engine accessory system, which is crucial for components responsible for exhaust emissions. Its original BMW Group origin ensures consistency with other system components, without the need for modifications or adapters.

Product Characteristics and Condition

The offered bracket belongs to the group of mounting elements that are often replaced in workshop practice during repairs or replacement of the secondary air pump. As an original BMW part, it ensures:

• compliance with factory technical documentation,
• adequate rigidity and resistance to operational loads,
• compatibility with standard bolts and mounting points.

The item is offered as a used part, providing a reasonable compromise between cost and maintaining the original manufacturer's specifications. For many BMW users, this is a practical way to restore proper emission system function without the need to invest in a new component.

Benefits of Using an Original Bracket

Using a dedicated secondary air pump bracket in BMW X3 E83 and Z4 E85 offers a range of practical service and operational benefits:

• Stable Pump Mounting – reduces the risk of mechanical damage resulting from vibrations and overloads.
• Correct Hose Routing – facilitates maintaining the proper geometry of the air and electrical system.
• Emission System Consistency – supports maintaining engine operating parameters in line with manufacturer's specifications.
• Easier Installation – factory mounting points reduce workshop time and the risk of installation errors.

For users who are modernizing or repairing their emission system, choosing an original bracket is a technically safe solution with a predictable outcome.

Related Categories and Technical Materials

If you are planning a comprehensive repair or modernization of the engine area in your BMW and need other parts from the same group, such as additional brackets, supports, or accessory mounts, check the available parts in the Other BMW category.

If you are interested in comparing technical solutions used in sports car versions, including differences in drivetrains, braking systems, and chassis, it is worth reading the article Audi RS vs Other Models – What Lies Under the Hood and Chassis?, which discusses key structural aspects using the Audi range as an example.