Mercedes Car Seals

gasoline would be rubber o rings.

diesel would be copper washers i would think

An injector is a metal part, on a Mercedes engine - with a thread - Most of the makes are Bosch or Beru.

In the head holes are drilled to provide a chamber with "seat" at the bottom that stops the injector from being to deep.

There is a lot of heat in the cylinder and also towards the injector. On the bottom of the chamber a heat shield is applied. It is made of steel or another heat resistant "metal".

Looks like a washer but has also a small chamber in it. The heat shield protects the injector nozzle from direct heat. The injector is screwed in with a torque of about 50 to 60 Nm and needs to seal hermetic with this procedure.

Where a holder for the injector is applied, there can be a gap between the holder and the injector.

Only for cosmetics and to keep that gap clean, a rubber sock or sleeve can be applied in that gap up to the 27 mm hex nut of the injector.

When you replace the injectors, you best replace the heat shields, because otherwise with multiple use, they leak. You can easily take them out with negative long nose seegering pliers. Clean these gaps out well with air so that nothing falls in the cylinders.

Do the injectors one at the time. Good luck

For the CDI a different type of injector has been introduced:

bosch Common rail

0445110024

0445110025

(0986435020)

Mercedes Sprinter 208 211 213 216 308 311 313 316 408 411 413 416 616 C200 C220 C270 CLK270 E200 E220 E270,

CDI CDI

I'm sorry but the rest didn't paste in, CHECK FOR THE FIRST 3 ITEM NUMBERS ON THE INTERNET -