BMW 3 Series E90 E92 E93 M3 Exhaust Right O/S Manifold Cat Converter

BMW 3 Series E90 E92 E93 M3 Exhaust Right O/S Manifold Cat Converter is an original BMW exhaust system component, designed for installation on the right side of the sporty M3 version. Thanks to its factory geometry and precise fit for the M power unit, this used component allows for maintaining correct exhaust flow parameters and compliance with the factory engine operating characteristics.

Specifications and technical data

• SKU: 7840792-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7840792
• Substitutable numbers: 7840792, M3, Exhaust, Converter
• Location on the vehicle: Right
• Category: Manifolds & Headers

Purpose and function in the exhaust system

This exhaust manifold integrated with a catalytic converter is a component of the first section of the exhaust system in the BMW 3 Series E90, E92, and E93 generations in the M3 version. It is responsible for:

• collecting exhaust gases directly from the cylinders on the right side of the engine,
• stabilizing exhaust pressure and temperature before the rest of the system,
• pre-purifying exhaust gases in the catalytic converter in accordance with BMW M3 factory specifications.

By maintaining the original design, the manifold supports proper engine dynamics and correct cooperation with the stock engine control unit and other exhaust components.

Construction and fitment for BMW 3 Series M3

The manifold has been designed specifically for the sporty M3 power unit, taking into account high thermal and pressure loads. Characteristic design features include:

• dedicated exhaust channel shaping for the right side of the engine,
• integrated catalytic converter matched to the M3 characteristics,
• factory mounting points to the cylinder head and the rest of the exhaust system.

This solution allows for installation in a plug-and-play manner in the appropriate versions of the BMW 3 Series E90, E92, and E93 M3, without the need for structural modifications.

Vehicle placement and installation aspects

The component is intended for installation on the right side of the vehicle, which is crucial when selecting parts for V-engines or inline engines with a split between the left and right sides. Correct fitment of the installation side ensures:

• proper alignment with the engine head and accessories,
• compatibility with the routing of subsequent exhaust sections,
• maintenance of appropriate clearances relative to the body and suspension components.

A used exhaust manifold with a catalytic converter is a good choice for repairs where maintaining the original system geometry and compatibility with factory BMW mounts is a priority.

Benefits of using an original BMW manifold

Using an original exhaust manifold with a catalytic converter in a BMW 3 Series M3 allows for maintaining the consistency of the entire powertrain. In practice, this means:

• factory fitment for the M3 engine and stock ECU software,
• stable exhaust system operating parameters under loads typical for a sports version,
• preservation of the characteristic M3 sound within the stock configuration.

For users who want to combine sports performance with maintaining the original specification, such a component is a technically sound choice when repairing or replacing a damaged manifold.

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 manifolds, downpipes, or other parts of the system, check the available parts in the BMW Exhaust Manifolds category.

More information about exhaust systems and used parts

For drivers interested in the technical aspects of selecting used manifolds and catalytic converters for sports and premium cars, including BMW, we recommend the article on our blog: Performance exhaust system: used manifolds and sports catalytic converters on the road. You will find practical tips there regarding the selection of exhaust components, their operation, and their impact on engine performance.

If you want to better understand why original used components are often the optimal solution in terms of safety and service costs, also take a look at our guide: Quality assurance and OEM safety – why used original car parts are the best choice for your car?.