Welcome to TUNAP France For trade customers only

984 Injector Direct Protection

Provides effective protection against fuel-related deposits on injectors thanks to innovative ROA² technology that forms a molecular-active protective film. to minimise fuel consumption and keep emissions values low. Adding the product to the fuel tank is proven to keep the fuel in line with the DIN EN 590 fuel standard.

Art.-no. 1105178

Prices for customers after login

984 Injector Direct Protection

Art.-no. 1105178

Prices for customers after login




Exclusively for trade customers

Register now and access more than 400 products

Hazardous Material

ROA² (Reactive Organic Amines) technology

  • Further development of ROA technology (more powerful cleaning formula)

  • Deposits on injectors are broken down and cleaned away

  • Re-contamination is prevented

  • Excellent dissolution properties in all (bio-)diesel mixtures

  • Properties

  • Independently tested for effectiveness by TÜV

  • Provides effective protection against fuel-related deposits

  • Molecularly active protective film delays recontamination

  • Maintains fuel consumption and exhaust gas values regarding fuel-related pollution at the same level as new cars

  • Improves ignition properties by elevating the cetane number into the safe range and reduces fuel-related knocking

  • Antioxidants delay the chemical ageing of the fuel

  • Simple and efficient one-step application thanks to state-of-the-art packaging technology

  • Suitable for use by the end customer

  • Application area

  • Suitable for all (bio)diesel mixtures.

  • For all common-rail and pump-nozzle systems.

  • For safeguarding fuel quality.

  • Use regularly (recommended every 5000 km) for best protection. Use after applying 989 Injector Direct cleaner or 938 Injector Intensive cleaner.

  • Instructions

    Add to the fuel tank. Use the filler neck to do so. Sufficient for up to 80 l of fuel


    200 ml: Sufficient for up to 80 l of fuel (min. 10 l of fuel)
    500 ml: Sufficient for up to 200 l of fuel (min. 20 l of fuel)

    Improves combustion and thus reduces particulate emissions (Euro 6). Suitable for all (bio-)diesel mixtures.

    Product information


    Certificates/ Documents



    Art.-no. Cust. Mat. No.

    Hazardous Material

    Product information

    TUNAP France Catalogue

    Catalogue page as PDF  | 


    Datasheets ()

    CAD data  | 

    Certificates/ Documents



    Technical information