I just pull out my injectors on 1992 300 D and plastic housing or holders are all cracked.I cant find anywhere this parts.Is it only dealer parts or somebody else have them.Thank you for help.

Those parts are deleted/NLA from any source.



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That mean I need all new injectors.

NO.
There is no source = even NEW injectors do not come with these parts.

Sorry I bother you.That mean I just put back injectors without plastic part.

Is it going to hurt not having them ?
You are better not having anything unnecessary & plastic on the motor.
Less to go wrong.
We are never bothered by some one asking an innocent question like that !! I bet there are several others that have been worrying about those plastic bits & you were good enough to ask !!

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1984 300D 500k miles
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Correct = re-install injectors without them.

Thank you WHUNTER and LAYBACK.Better be safe than sorry.

That's what they were...
To prevent dust/dirt from entering the area between the Injector and the Pre-Chamber.
So the Crap didn't fall down into the Pre-Chamber during Injector removal.

Nice Idea!
(BUT whoever the supplier was,They manufactured the "Covers" out of some
kind of quickly degrading Plastico.(Think, "Middle '90s Engine Wiring Harnesses").

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