BMW G20 320i G30 X3 G01 Petrol B46 B48 Support Brace Intake Manifold 8671420

The BMW G20 320i G30 X3 G01 Gasoline B46 B48 Intake Manifold Bracket is an original part from the Intake Manifolds group, designed for BMW gasoline engines from the B46/B48 family. This used OEM component ensures proper manifold support, stabilizing its position relative to the cylinder head and engine accessories, which translates to reliable intake system operation.

Specifications and technical data

• SKU: 8671420
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8671420
• Substitutable numbers: 8671420, 11618671420
• Fuel type: Petrol
• Category: Intake Manifolds

Purpose and Compatibility

The presented bracket has been designed for modern BMW gasoline engines, where precise air delivery to the cylinders is crucial for performance and smooth operation. The part works with the intake manifold in the 3 Series G20 320i, 5 Series G30, and X3 G01 SUV models with B46/B48 engines, maintaining factory mounting points and system geometry.

By preserving the original design, the bracket guarantees:

• stable support for the intake manifold under varying thermal and mechanical loads,
• correct positioning of the manifold relative to the intake ports,
• reduction of stress on the manifold body and mounting components.

Role of the Bracket in the Intake System

In B46/B48 gasoline engines, the intake system operates under variable pressure and temperature, and the intake manifold is exposed to vibrations from the engine and body. The Intake Manifold Bracket serves as a structural reinforcement that:

• stabilizes the manifold's position relative to the block and cylinder head,
• minimizes the risk of micro-cracks and leaks at connections,
• helps maintain the integrity of the intake system, contributing to proper mixture control.

A properly selected bracket is particularly important in gasoline engines, where precise air metering affects performance, fuel consumption, and emissions.

Characteristics of the Used OEM Part

The offered bracket is a used part, an original BMW component, which means it retains factory geometry, material quality, and mounting points. A used component of this type is a sensible choice when:

• the existing bracket has been damaged or deformed,
• you are replacing the intake manifold and want to restore complete, factory-standard support,
• you want to maintain compliance with the manufacturer's service documentation.

The bracket is designed for gasoline engines, which simplifies part selection for vehicles powered by Petrol and helps avoid confusion with parts from diesel units.

Benefits of Installation and Service Aspects

Using an original bracket in the intake system offers tangible service benefits:

• easier installation due to factory mounting points and precise fit with the intake manifold,
• maintenance of the system rigidity as intended by the manufacturer,
• reduced risk of subsequent leaks and incorrect air sensor readings.

For workshops and private users, this means shorter installation times and a lower risk of needing to re-intervene in the engine area after repair. Stable manifold support is also important for further service work, such as removing accessories or diagnosing the intake system.

Related Parts and Technical Knowledge

If you are planning a comprehensive repair or upgrade of the engine area in your BMW and need other parts from the same group, such as additional brackets, mounts, or manifold structural components, check the available parts in the BMW Intake Manifolds category.

To better understand the impact of intake and exhaust components on engine performance, it is worth consulting a guide describing the selection and operation of used components – a detailed discussion can be found in the article Performance Exhaust System: Used Sport Manifolds and Catalytic Converters on the Road.