BS ISO 12345:2021

What is ISO 12345 - Fuel injection equipment about?  

ISO 12345 specifies cleanliness assessment procedures for evaluating the number of debris found within the clean side of diesel fuel injection assemblies, which could lead to a reduction in the system’s operational effectiveness. 

While other International Standards, e.g. ISO 16232, relate to the cleanliness of components used in road vehicle fluid circuits, ISO 12345 is focused on diesel fuel injection assemblies as supplied to diesel engine manufacturers or the service market. 

ISO 12345 describes three test procedures for checking the cleanliness of high-pressure fuel injection pipes. These tests help you in the removal of typical pipe contaminants. 

Who is ISO 12345 - Fuel injection equipment for? 

ISO 12345 on cleanliness assessment of fuel injection equipment is applicable to: 

• Vehicle manufacturers  
• Vehicle maintenance and repair shops 
• Diesel fuel injection assembly manufacturers 
• Vehicle regulatory authorities   

Why should you use ISO 12345 - Fuel injection equipment?  

Contamination of the fuel injection system can happen because of  system use or wear, equipment servicing, or as a result of the original supplier’s manufacturing and assembly processes. ISO 12345 is concerned with the assessment of the cleanliness of the fuel injection equipment as originally supplied to the engine manufacturer. 

ISO 12345 clearly recognises the importance of care in the handling and measurement of contamination samples. Moreover, the low levels of contaminant with fuel injection equipment make this a particularly difficult task. Thus, ISO 12345 serves you as an indicator of component cleanliness and a driver towards higher-quality standards. Extreme attention to detail is recommended for the user. 

It is not always clear what level and type of cleanliness would be beneficial for improved performance and life on a cost-effective basis. The actual quantitative levels can only be set in relation to other parameters, agreed between the manufacturer, supplier and user.  ISO 12345 enables you to evaluate the cleanliness of fuel-injection equipment and a framework for a common measurement and reporting. 

ISO 12345 gives verification requirements for the used test equipment in detail. Thus, you can carry out the test accurately.  

What’s changed since the last update?  

BS ISO 12345:2021 is the third edition that cancels and replaces the second edition (ISO 12345:2013), which has been technically revised. 

The main changes compared to the previous edition are as follows: 

• The reporting of the inspection results (Clause 7) changed from FIECC (fuel injection equipment cleanliness code, as in ISO 12345:2013) to CCC (component cleanliness code, as in ISO 16232)