Component Overview

Information 

• The high-pressure fuel injectors of the petrol direct-injection system are distinguished from each other by means of color clips (naturally aspirated engine and Turbo engine). The naturally aspirated engine injector has a blue clip, while the injector for the Turbo engine has a yellow clip. They are visible through a cut-out in the retainer. 
• Classified high-pressure fuel injectors are installed. Two different injectors for naturally-aspirated engines and two different injectors for Turbo engines with different flow rates are used. The color clips merely differentiate the injectors for naturally aspirated from those for turbo engines (blue and yellow). Always observe the part numbers when replacing individual injectors.  

Information 

• The new fuel injectors are delivered with two transport caps fitted. 
• Simply screw off the screw-on cap at the top just before fitting (screw-on cap prevents intrusion of dirt). 
• Simply pull off the transport cap at the bottom (protective sleeve, calibrating sleeve) immediately before fitting (transport cap prevents the Teflon sealing ring from swelling). 
  Fig 1: Identifying Injector And Transport Protection

  Courtesy of PORSCHE CARS NORTH AMERICA, INC.

1. Colored screw-on cap at the top (screw-on cap prevents intrusion of dirt).
2. Transport cap at the bottom (protective sleeve, calibrating sleeve) prevents the Teflon sealing ring from swelling.
3. Position of Teflon sealing ring.
4. Screw thread for fitting on fuel distributor pipe (rail).
   Fig 2: Identifying Injectors (High-Pressure Fuel Injectors)

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.

1. Retainer for injectors; with twist lock and cut-out for the injector's color clip
2. Screw, M8 x 30
3. Injector (high-pressure fuel injector)