BMW 1 3 5 Series E81 E90 F10 F20 F30 N47 Clamping Jaw Fuel Injector Set of 4

BMW E87 E90 F10 F20 F30 N47 B47 Injector Mount is an original part from the injector nozzles category, designed for high-pressure diesel systems in BMW engines. A stable injector mount is crucial for proper sealing of the combustion chamber, precise fuel delivery, and reducing engine vibrations and noise.

Specifications and technical data

• SKU: 7809798
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7809798
• Substitutable numbers: 13537809798, 7809798, 13534726100, 4726100, 13534725744, 4725744, 13537798450, 7798450
• Category: Fuel Injectors

Purpose and Role in the Injection System

The injector mount in N47 and B47 engines is responsible for the rigid, axial guidance of the injector in the cylinder head and maintaining constant pressure against its seat. This ensures the injection system remains sealed, and injection pressure stays stable across the full load range.

In practice, a correctly selected mount reduces the risk of:

• injector seat leakage and exhaust blow-by into the valve chamber,
• uneven engine operation caused by injector micro-movements,
• accelerated wear of the injector and the cylinder head seat.

Compatibility with BMW Models

The presented mount is designed for N47 and B47 engines used in popular BMW 1, 3, and 5 Series models such as E87, E90, F10, F20, and F30. This means the part has been engineered with specific BMW injection systems in mind, maintaining the correct geometry, rigidity, and mounting method.

Selecting the right mount for a specific engine and body type is crucial for:

• maintaining the factory operating characteristics of the unit,
• correct positioning of the injector nozzle relative to the combustion chamber,
• trouble-free installation without the need for modifications.

Component Characteristics and Benefits of Use

The original BMW injector mount from the injector nozzles category has been designed to withstand the high thermal and mechanical loads typical of modern diesel engines. Its construction ensures:

• stable holding of the injector in its designated position throughout its service life,
• resistance to material fatigue during frequent heating and cooling cycles,
• proper distribution of clamping forces on the injector seat.

The part comes from the BMW OE group, which in practice means adherence to factory manufacturing tolerances and full compliance with the manufacturer's original technical documentation.

Condition, Installation, and Service Application

The part is offered as used, allowing for economical repair of the injection system while maintaining original BMW specifications. This type of component is particularly useful for:

• injector refurbishment in N47/B47 engines,
• rectifying the effects of blow-by (so-called "hissing" or seized injectors),
• comprehensive cylinder head service after injector removal.

Due to its precise geometry, installation with appropriate torque values and new fasteners and seals, in accordance with BMW service procedures, is recommended.

Technical Support and Additional Materials

If you want to better understand how injector problems manifest in diesel engines and when replacing the mount makes sense, read the article: Diesel Injector Faults – How to Recognize Them and What Their Neglect Can Lead To. This is a practical addition to your knowledge when planning an injection system repair.

Owners of the 3 Series interested in a broader context of operation are also encouraged to read the guide Troublesome BMW E90 Engines – What Can Ruin Your Budget, which helps in making informed decisions about engine unit servicing.

If you are looking for other parts from the BMW injector nozzles category for your car, check out the BMW injector nozzles available in our store to complete the entire set needed for fuel system repair.