Are diesel fuel injectors fairly compatible across diesel models or are they engine-specific? Was hoping to send out the set in my 190D/OM601 out for a rebuild/cleaning and borrow a few from my 300D/OM617.

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1985 190D 2.2L 717.411 5-speed
1983 300D Euro OM617.950

They are mostly engine-specific, although some overlap can occur.

What the actual difference is between one injector and another (apart from the different part number) and whether that difference is significant or not is more difficult to say. The spray pattern must be different to cater for different engine characteristics. Some people experiment with newer injectors in their old engines and report good results, but that doesn't mean it will be good for the engine in the long run.

Injectors for turbo engines usually open at a higher pressure, so if you want to use them in a non-turbo engine, you have to adjust the pop pressure.

some people take a 617 injector and use VW injector parts to make a two stage injector www.superturbodiesel.com

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1999 w140, quit voting to old, and to old to fight, a god damned veteran, deutschland deutschland uber alles uber alles in der welt

An easy way to find out compatibility is to go to your favorite Internet Parts seller and look up the part number for the Injectors for both Engines.

If the part number is the same they are interchangeable.

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84 300D, 82 Volvo 244Gl Diesel

Same part number on Auto.HausAZ. Description is slightly different, mentions engine serial number when I look it up for 190D but both claim to replace Bosch NA30X and NA33X versions. Both cars are non-turbo, my 1983 300D is a Euro import so I looked it up for 1981. Maybe to be sure, I'll pull an injector from each engine and compare numbers.

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1985 190D 2.2L 717.411 5-speed
1983 300D Euro OM617.950

The 300D injectors will not even fit in your 190D. The last set of injectors I saw from a OM60x engine did not have the same distance below the threads. The OM61x injectors extend past the threads. I would suggest drive the 300D while the 190D is out of commission.

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1991 F250 super-cab 7.3 IDI. (rebuilt by me) Banks Sidewinder turbo, hydroboost brakes, new IP and injectors.
2003 S430 - 107K
1983 300SD - Tanoshii - mostly restored ~400K+.
1983 300SD - Good interior. Engine finally tamed ~250K.
Monark Nozzle Install Video - http://tinyurl.com/ptd2tge

If only I could...the 300D is non-operational at the moment.
Which engine did these injectors come out of? Mercedes Source also has used injectors for 1974-81 4/5-cylinder non-turbo diesels and mentions compatibility with 190D 2.2L

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1985 190D 2.2L 717.411 5-speed
1983 300D Euro OM617.950

Yeah, they will probably send you injectors for your model. Kent has used injectors for a lot of different engines. I bet he asks you what model you have.

The OM 61x injectors will not even fit into the OM60x prechamber. Or vice-versa.

I will post a picture shortly.

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1991 F250 super-cab 7.3 IDI. (rebuilt by me) Banks Sidewinder turbo, hydroboost brakes, new IP and injectors.
2003 S430 - 107K
1983 300SD - Tanoshii - mostly restored ~400K+.
1983 300SD - Good interior. Engine finally tamed ~250K.
Monark Nozzle Install Video - http://tinyurl.com/ptd2tge

Usually he does ask, but this is in the USED section and there are only two in stock. At one point, there was a set of rebuilt injectors with the Monark nozzles (which I can't seem to find) for 190D 2.5 / OM602 and in the description it said specifically that they would not work in the earlier OM601 model. Leads me to wonder if they might have changed something in the later engines.

Attached Thumbnails

 

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1985 190D 2.2L 717.411 5-speed
1983 300D Euro OM617.950

On the After 1985 Engines the Engines that use a Prechamber Collar/Ring with 2 Slots to retain the Prechambers and use the same style of Injector Bodies as on My 671.952. Those Injectors thread into the Collar itself.

On the Engines with the Prechamber set up for Angled Injection the Prechamber Collar/Retaining Ring is Slpined. On those Injectors the Threads are near the very bottom of the Injector; the Threads are finer and the Injector Threads directly into the Prechamber. Also the Threaded area diameter is smaller.

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84 300D, 82 Volvo 244Gl Diesel

Injectors

Left is an OM60x injector. Right is an OM61x injector and prechamber.

Attached Thumbnails

 

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1991 F250 super-cab 7.3 IDI. (rebuilt by me) Banks Sidewinder turbo, hydroboost brakes, new IP and injectors.
2003 S430 - 107K
1983 300SD - Tanoshii - mostly restored ~400K+.
1983 300SD - Good interior. Engine finally tamed ~250K.
Monark Nozzle Install Video - http://tinyurl.com/ptd2tge

In my picture, the injector on the left is from a 190D 2.5 N/A engine. I don't remember what year. Possibly 87 or 88?

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1991 F250 super-cab 7.3 IDI. (rebuilt by me) Banks Sidewinder turbo, hydroboost brakes, new IP and injectors.
2003 S430 - 107K
1983 300SD - Tanoshii - mostly restored ~400K+.
1983 300SD - Good interior. Engine finally tamed ~250K.
Monark Nozzle Install Video - http://tinyurl.com/ptd2tge

Hey,

Just speaking about the OM617.9XX engine: there are 2 different styled bodies for the injector which look identical to the pictures posted in #10. You could actually mix and match the set of 5 with the 2 different styles. No difference. Not sure about other engines, however, or whether or not there is a difference with OM617 injectors and others.

Could you post some pictures of that? I have only dealt with one type of injector body for the OM617.

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1991 F250 super-cab 7.3 IDI. (rebuilt by me) Banks Sidewinder turbo, hydroboost brakes, new IP and injectors.
2003 S430 - 107K
1983 300SD - Tanoshii - mostly restored ~400K+.
1983 300SD - Good interior. Engine finally tamed ~250K.
Monark Nozzle Install Video - http://tinyurl.com/ptd2tge

Notice the difference in the size of the Parts between the 2 Injector Bodies. The internal parts are also a different size.

If you take these Injectors apart keep all of the parts that came from that one Injector together.

If they are used as whole/complete Injectors and the Injector Nozzles are the same and the Pop Pressure is the same both style Injectors can mixed together and used on the same Engine (that is in the Manual).

The one on the bottom is the older style.

Attached Thumbnails

 

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84 300D, 82 Volvo 244Gl Diesel