This kit can only be used on Common Rail Engines - 613/648

This upgrade injector tie down bolt kit is designed for major repair or upgrade in strength for higher performance use. It will allow the injector to deal with higher cylinder pressure. 

Please see YouTube below (around 19 minutes in) for a for detailed explanation. 

Kit Includes: 

• 6 x Genuine Mercedes M7 injector Retaining Bolts
• 6 x Genuine Mercedes copper sealing washers
• 1 x M7 Tap
• 1 x 6mm drill 

Torque Settings:
7nm + 90 degrees + 90 degree