Fuel Rail BMW E46 316i 318i 318Ci Petrol M43 Injection Rail Injectors 1247930

BMW E46 316i 318i 318Ci Gasoline M43 Fuel Rail Injectors is a complete fuel rail with gasoline injectors designed for the M43 engine in BMW 3 Series E46 models. This component belongs to the injector nozzles category and is a precise part of the fuel supply system in gasoline engines.

Specifications and technical data

• SKU: 1247930
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 1247930
• Substitutable numbers: 1247930, 13531247930, 1438215, 13531438215, 1247931, 13641247931
• Fuel type: Petrol
• Category: Fuel Injectors

Purpose and Application in the M43 Engine

The presented fuel rail with injectors has been designed to work with the M43 gasoline engine installed in BMW E46 316i, 318i, and 318Ci versions. The use of a dedicated injector set ensures correct fuel delivery and stable engine operation across the full load range.

The injection system in this engine is responsible for:

• precise gasoline atomization in the intake manifold,
• maintaining the correct fuel-air mixture under various driving conditions,
• stable idle speed and proper throttle response.

Technical Characteristics of Injector Nozzles

The fuel rail with gasoline injectors belongs to the injector nozzles category, meaning the key parameters are appropriate fuel flow rate and spray pattern matched to the M43 engine. The use of correct injectors directly impacts:

• even operation of all cylinders,
• efficient engine starting when cold and hot,
• maintaining fuel consumption at factory levels,
• reducing exhaust emissions to manufacturer-specified values.

The complete fuel rail facilitates installation, as the injectors are already integrated into a single unit, which speeds up workshop processes and reduces the risk of errors during system assembly.

Benefits of Using an Original BMW Fuel Rail

Choosing a fuel rail with injectors specifically designed for BMW E46 with the M43 engine allows for the preservation of factory engine operating parameters. Compared to aftermarket alternatives of uncertain origin, an original component ensures:

• compatibility with engine control unit maps developed for the M43,
• correct fuel pressure and flow rate across the entire RPM range,
• reduced risk of uneven running and misfires,
• stable idle quality and during acceleration.

This solution is particularly beneficial for BMW specialist workshops and owners who wish to restore the engine to a near-factory condition without experimenting with random parts.

Condition, Verification, and Selection by Numbers

The fuel rail with injectors is a used market component, allowing for economical fuel system servicing while maintaining original manufacturer specifications. Before installation, a standard leak test is recommended, along with checking injector operation on a test bench and verifying compatibility with the specific M43 engine version installed in the particular BMW E46 unit.

To better understand typical injector failure symptoms and the differences between gasoline and diesel systems, it is worth reading the article describing diesel injector faults – symptoms, consequences, and diagnostic methods. Although it concerns diesel engines, many diagnostic and operational principles remain similar for gasoline systems.

If you want to deepen your knowledge on safely selecting used parts, the guide safe online purchase of used car parts step by step will be helpful, covering topics such as selecting parts by OEM and reference numbers, as well as practical tips for workshops.

Other BMW Injector Nozzles

If you are looking for other BMW injector nozzles for different engine versions or models of this brand, check out the BMW injector nozzles available in our assortment. With filters by brand and category, you can easily select the appropriate part for a specific model and engine type.