Just finished with the ICV hoses and AFM boot replacement along with all new injectors, insulators, o-rings, & seals on M103. I'm trying to pass emissions testing, and the old parts had 170k on them. I have not found peace of mind though, as it seems it doesn't make but maybe a slight difference in smoothness at idle(it was already smooth as glass). Even though the old rubber bits are no longer what I would call pliable, they weren't cracked and seemed to be doing the job. Who knows. Car runs pretty good anyway.

The air boot underneath the AFM was unbelieveably difficult to seat. I could not have done it without a set of hose picks. One tip - install the band clamp after you get the boot seated successfully. It will only be in the way otherwise.

However the plastic plug ends on all the plugs under the air cleaner - ICV, EHA, AFM potentiometer, coolant temp on the head, and the single conductor one at the rear of the head; ALL of them broke their little snap tabs. And I was gentle, believe me. The plug at the EHA snapped its tabs as I was reinstalling the plug. They still plug in OK and I'm sure it doesn't matter all that much, but jeez.

Are these replaceable? I didn't see any part numbers on them, but then again I wasn't looking for them either. It would be nice to renew them if possible.

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'02 BMW 325i
'85 300D 450k
'93 190E 2.6 170k(killed by tree)
'08 Ducati Hypermotard 1100S 6k
'06 Ducati S2R800 14k(sold)

EPC-net Online - Subscription Step 1 of 3

EPC is showing Pins,Bushings and "Housings/Covers" for wire terminations.

Sure looks like to me ...If there's a plug under the hood you can get It.

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'84 300SD sold
124.128

Ditto, all of the plastic covers should be available.

And they should have a MB part number on them.

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MERCEDES Benz Master Guild Technician (6 TIMES)
ASE Master Technician
Mercedes Benz Star Technician (2 times)
44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)
Retired Moderator

How do the ends replace? Do you cut the wires and re-solder the new ends??

The ends "SHOULD" be soldered to the "Pins".
[After they roll off the Assembly Line ,Who Knows what's done to them?]

So you'd just Open up the Old/Bad "Cover" and transfer the Wires/Pins to
the New Plug and Cover.

I would take a Digital Picture (Or draw a diagram of the Wire arrangement)
before doing the transfer,to prevent His Highness of Obfuscation Mr. Murphy
from "Rearranging" the Order as you work.

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'84 300SD sold
124.128

I know it would be more expensive, but isn't it possible to order the entire wiring harness that goes on the engine? That way you would have fresh wires/coatings and everything

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Streetside: 1987 Mercedes 300E Petrol Blue/Green
2014 Ford Mustang Grabber Blue
1999 Ford Ranger Green

Dockside: 1968 Eltro 17
1985 Silverton 34C

The wire harnesses on the 103 don't really have issues like the 104's did. No real reason to change it IMO.

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2016 Monsoon Gray Audi Allroad - 21k
2008 Black Mercedes E350 4Matic Sport - 131k
2014 Jeep Wranger Unlimited Sahara - 62k
2003 Gray Mercedes ML350 - 122k

$900.00 USD (Stealer retail)

AND that's only one of the 300E 's engine cable harnesses!

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'84 300SD sold
124.128