Turbocharger BMW F10 F20 F30 125i 320i 520i N20 Turbo Charger Complete 7635803

BMW F20 F30 125i 320i N20 Complete Turbocharger 7635803 is a used, complete turbocharger from the Turbochargers & Parts category, designed for the N20 engines in the BMW 1 Series F20 and 3 Series F30 models. It offers factory performance characteristics, maintaining the parameters intended by the manufacturer for supercharged petrol engines.

Specifications and technical data

• SKU: 7635803
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7635803
• Substitutable numbers: 11657635803, 7635803, 11657588938, 7588938
• Tire profile: 65535
• Category: Turbos & Parts

BMW N20 turbocharger characteristics

This complete turbocharger for the BMW F20 and F30 is an OEM component, designed specifically for the four-cylinder N20 engine. The original design ensures proper boost pressure, correct throttle response, and stable operation across the entire RPM range, resulting in predictable performance and compatibility with the factory engine control unit maps.

The complete turbocharger configuration allows for efficient installation in place of a worn component, without the need to adapt universal solutions. This ensures that the intake and exhaust systems retain their factory routing, and the N20 engine maintains proper operating parameters in daily use.

Application in BMW F20 125i and F30 320i

This BMW N20 turbocharger is designed for the popular 1 Series F20 (125i version) and 3 Series F30 (320i version) models, where boost plays a key role in achieving adequate power from a small displacement engine. Using the correct OEM component allows you to maintain:

• proper cooperation with the engine control system,
• appropriate dynamics at low and medium revs,
• stable boost pressure under highway load conditions,
• consistency with the factory turbocharger cooling and lubrication system.

Thanks to the adaptation to the specific F20 and F30 generation, installation is based on the original mounting points, which facilitates service work and reduces the risk of leaks in the intake or exhaust system.

Used condition and technical aspects

The turbocharger offered is in used condition, representing a reasonable compromise between repair cost and maintaining original BMW specifications. A used OEM component is often chosen as an alternative to remanufacturing or aftermarket replacements, particularly in N20 engines, where correct geometry and component fit are crucial to engine durability.

This product is classified as a turbocharger and parts, meaning it's designed to operate under demanding thermal and mechanical conditions. The factory design ensures adequate housing stiffness, proper shaft guidance, and compatibility with the N20 engine lubrication system. The tire profile information in the technical data is a system parameter and does not affect the turbocharger's operation.

Benefits of using an original BMW turbocharger

Choosing an original BMW turbocharger for your F20 and F30 helps maintain the integrity of your entire drivetrain. Key benefits include:

• Factory fit – compatible with mounts, oil and coolant lines, and intake and exhaust systems.
• Stable operating characteristics – no need to modify the engine controller software, maintaining standard parameters.
• Predictable behavior of the N20 unit – proper response to load, smooth boost build-up and correct cooperation with engine protection systems.
• Economical repair – a used OEM part often allows you to reduce the cost of restoring your car to working order while maintaining high quality workmanship.

BMW turbochargers – selection and additional information

If you are looking for other turbochargers dedicated to this brand, check out our BMW turbochargers category, where you will find a wide selection of components for various models and generations.

When planning a drivetrain upgrade or repair in a BMW with four-wheel drive, it's also worth reading an article discussing different AWD systems. For a detailed comparison, see the blog post "xDrive, 4Matic, quattro, or 4Motion – AWD Comparison for BMW, Mercedes, Audi, and VW ," which helps you better understand how the drivetrain interacts with the engine and accessories like the turbocharger.

Summary

The BMW F20 F30 125i 320i N20 Complete Turbocharger 7635803 is a used, complete OEM turbocharger from the Turbochargers & Parts category, designed for the N20 engine in 1 and 3 Series models. It provides factory fit, predictable performance characteristics and the ability to economically restore the engine to full performance, while maintaining the quality standards typical of the BMW brand.