1. Cylinder head coolant circuit valve "N489"
2. Injectors: Injector of cylinder 1-N30-. Injector of cylinder 2 "N31". Injector of cylinder 3 "N32", Injector of cylinder 4 "N33"
3. Differential pressure sensor "G505"
4. Sensor 1 exhaust gas pressure "G450": only for vehicles with engine letter designation CRKB
5. Boost pressure regulator position sensor "G581"
6. Noise generator: only for vehicles with engine letter designation CUPA
7. Coolant temperature sensor "G62"
8. Boost pressure limitation solenoid valve "N75": Boost pressure limitation solenoid valve connector "N75", exhaust gas temperature sensor connector 4 "G648", exhaust gas temperature sensor connector 3 "G495", lambda probe connector "G39"
9. Air flow meter "G70"
10. Engine control unit "J623"
11. Boost pressure sensor "G31"
12. Intake air temperature sensor "G42"
13. Fuel pressure regulator "N₂76"
14. Boost air temperature sensor after intercooler "G811"
15. Hall sensor "G40" (camshaft position sensor)
16. Glow plugs: Glow plug 1 "Q10". Glow plug 2 "Q11". Glow plug 3 "Q12"; for engines with letter designation CRKB with pressure sensor in combustion chamber of cylinder 3 "G679". Glow plug 4 "Q13"
17. Fuel pressure sensor "G247"
18. Fuel temperature sensor "G81": in the pressure fuel line
19. High pressure fuel pump: with fuel metering valve "N₂90" (do not open)