Diesel injector test kit - injector return flowmeter for BMW 4 & 6 cylinders (M57, N57, B57...)

Description

The 24 pcs diesel injector return flow meter adapter kit is the ideal professional technical tool for BMW enthusiasts wishing to accurately diagnose common-rail diesel injection systems. Designed to enable simultaneous leak-off measurement on up to 6 injectors, the kit is ideal for BMW 4-cylinder engines. and 6-cylinder diesel.

BMW engine compatibility (representative examples)

4-cylinder diesel common-rail :

• M47 engine (BMW 1 series, 3 series, 4 series 2.0 d)

• N47 engine (BMW 1 serie, 3 serie, 4 serie 2.0 d): 4-cylinder diesel engine from 2007-2014.

• B47 engine (BMW 4-cylinder diesel from 2014 to today).

6-cylinder diesel common-rail :

• M57 engine (BMW 6-cyl diesel classic, 1998-2013).

• N57 engine (BMW 6 cyl diesel, 2008-2018).

• B57 engine (newer BMW 6-cyl diesel, since 2015).

If your BMW diesel is equipped with one of these engines (e.g. Series 1, Series 3, Series 4 with 4-cylinder diesel; Series 5, Series 7, X3, X5 with 6-cylinder diesel), this kit is perfectly suited to your needs.

Functionality and benefits

• Simultaneous measurement of up to 6 injectors: particularly useful for BMW 6-cylinder engines, but also useful for 4-cylinder engines by connecting just 4 cups.

• Each graduated cup measures the amount of fuel returned by the injector over a given period. This reveals a worn, blocked or faulty injector before serious symptoms appear (loss of power, smoke, excessive consumption).

• Included: 24 adapters covering a wide range of common-rail injectors (Bosch, Delphi, Siemens...), maximizing compatibility even beyond BMW.

• Robust construction: ~70 cm pipes, aluminium bar with hooks for under-hood mounting, storage case. For workshop or garage use.

• Time-saving and precise: you can make a reliable diagnosis without having to dismantle all the injectors or intervene blindly.

Application tips for BMW

1. Park the BMW on a level surface, with the engine warm but switched off, and take all safety precautions (pressurized diesel, fuel return).

2. Locate the injector return hoses (4 or 6 depending on engine). Disconnect them.

3. Choose the right adapter kit for your injector type (Bosch/Delphi/Siemens).

4. Connect each tube to a measuring cup. Attach the aluminum bar under the hood to hold the beakers in place.

5. Start the motor for a set time or follow a test protocol.

6. Compare the volumes measured for each injector: large discrepancies (e.g. > 15-20 %) indicate a potentially faulty injector.

7. Take action (cleaning, adjustment, replacement) if necessary.

8. Replace the original pipes, check for leaks, then store the kit in its case.

Technical specifications

• Contents: 6 measuring beakers + 6 measuring cups + 6 tubes (~70 cm) + 24 adapters + aluminium bar + case.

• Materials: ABS + stainless steel (high-strength adapters).

• Application: leak-off measurement for common-rail injectors.

• Compatible with: 4 or 6-cylinder common-rail diesel engines (BMW and others).

• Warranty (often): 1 year (see seller).

Extended compatibility

Although this kit is particularly recommended for BMW 4- and 6-cylinder diesels, it is still the best choice. compatible with other brands and engines using Bosch, Delphi or Siemens common-rail injectors. This enables you to reach a wider audience (multi-brand workshop) while remaining BMW-centric.

Conclusion

Visit Flowmeter return adapter kit for diesel injectors 24 pcs is the tool you need to accurately diagnose your BMW diesel injectors (4 or 6 cylinders). This kit will help you anticipate failure, optimize performance and keep your BMW in top condition.