BMW 3 4 Series F80 M3 F82 F83 M4 Exhaust Cat Converter Close Engine 7848044

BMW 3 4 Series F80 M3 F82 F83 M4 Exhaust Cat Converter Close Engine is an original BMW exhaust system component, designed for installation in vehicles with a front-mounted engine. Thanks to its factory design, it ensures proper exhaust gas flow, adequate sound dampening, and maintains the engine performance characteristics consistent with the M3/M4 standard. This used OEM component is a sensible choice for repairs and restoration of the exhaust system in high-performance vehicles.

Specifications and technical data

• SKU: 7848044
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7848044
• Substitutable numbers: 18327848044, 7848044
• Category: Mufflers & Resonators

Purpose and function in the exhaust system

The presented item belongs to the Mufflers and resonators category and is designed specifically for the sporty BMW 3 Series F80 M3 and 4 Series F82/F83 M4 models. The integrated exhaust section with a catalytic converter mounted close to the engine is responsible for:

• stable exhaust gas discharge from the engine compartment,
• reduction of noise and unwanted resonances,
• maintaining proper backpressure in the system,
• cooperation with the factory engine management system and sensors in the further part of the exhaust line.

Thanks to the OEM design, the acoustic and dynamic consistency characteristic of the M version is maintained, which is important for both track driving and daily use.

Benefits of using an original BMW component

Choosing an original BMW component for the exhaust system has a direct impact on the durability and performance of the engine. This exhaust section with a catalytic converter provides:

• factory fitment to the chassis geometry – no modifications required, proper routing of pipes and mounting points,
• compatibility with the stock M3/M4 exhaust line – easy connection to other sections of the system,
• appropriate exhaust flow characteristics, essential for high-power units,
• maintenance of a predictable sound level and acoustic comfort inside the cabin.

The used OEM element is a compromise between cost and quality – it allows you to maintain the original engine performance characteristics without resorting to unreliable replacements or universal solutions.

Condition, installation, and service application

The offered exhaust system with a catalytic converter comes from dismantling and is sold as a used part. This type of component is particularly useful in situations where:

• mechanical damage to the factory exhaust has occurred (e.g., impact, local corrosion),
• it is necessary to revert from tuning solutions to a configuration close to stock,
• accident repairs are being carried out in the front area of the vehicle.

Installation should be performed in a workshop equipped with a lift and experience in working with BMW M exhaust systems, which will allow for maintaining the proper positioning of the element relative to the engine and chassis and avoid stress on the connections.

Integration with other BMW exhaust system components

This exhaust section works with further sections of the M3/M4 exhaust line, including subsequent mufflers and resonators. When planning a larger scope of work, it is worth considering comprehensive service of the entire exhaust path to:

• minimize the risk of leaks at the connections,
• achieve uniform vibration and noise dampening,
• ensure consistent operating conditions for the engine.

If you are planning a comprehensive repair or upgrade of the exhaust system area in your BMW and need other elements from the same group, such as mid-pipes, rear mufflers, or additional resonators, check the available parts in the BMW Mufflers and resonators category.

Additional technical support and service knowledge

When working with advanced BMW units, especially in high-power models, it is worth using reliable technical materials regarding compatibility and component selection. If you are interested in a broader context of upgrading the turbocharging and air cooling system in newer 3 Series generations, the Global Parts guide regarding the B58 engine may be helpful – BMW B58 code, or 340 HP from the secondary market – a checklist before buying a turbocharger and intercooler for the BMW 3 Series (G20). Although the description concerns a different unit, the approach to OEM verification, installation, and checking compatibility by VIN contained therein may also be useful when planning work on your BMW M3 or M4.