Are the Cylinder heads on a OM603 interchangeable with an OM617?
Also is there any Mercedes engines that have heads interchangeable with those on a 603 turbo diesel? I have an 86 300sdl...trying to find replacement for my #14 head. Would like to find a #17. Thanks

603 and 617 are not interchangeable. I think you can use any 603 head. 300 or 350 sdl, or '87 124 (300D).

Kind f a big difference between engines, mainly a cylinder difference and bolt pattern and etc.

And the metal its made from....

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Both the 617 and the 603 are SOHC water-cooled 3-liter (turbo and NA) diesels. Pretty much every other parameter was changed in the transition from 617 to 603.

Jeremy

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"Buster" in the '95

Our all-Diesel family
1996 E300D (W210) . .338,000 miles Wife's car
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X2, to All that was said above plus, Not to mention One is a 5 cyl, and one is a 6, maybe that was mentioned too, try and make that work.
And if your looking for a replacement head, try to find a #18 or 22, better casting design, against overheating (cracking/warping) and future head gasket issues

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07 E350 sport Wife's Daily
01 E320 sport My Daily
00 C230 Kompressor Our back up (new Arrival)

87 300D Turbo my Daily for 8 yrs. Selling to neighbor

82 GMC Jimmy (K5) 6.2 Diesel (my Wheeler)
73 Roadrunner 340ci My very first car, still own it

In a pinch. . .

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1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13

if you get a 22, be sure and snag the injectors, and the lines... they are different from the 86/87 #14

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1987 300TD
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