As the title ask, are 617 heads from a 300TD and 300SD (from 1980) interchangeable?

The 300SD head says 617 016 03 01 with a few characters below that that are undecipherable.

From the sound of wikipedia it seems the om617.951 and om617.952 would indeed be interchangeable.

Thank you!

__________________
Nosce Te Ipsum "Know thyself"

Yes but....

Assuming you mean a 123.193 (wagon) when you say "TD", that head will have the hydraulic pump that goes with the SLS. If your SD does not have SLS, the head is far more valuable to a wagon owner.

__________________
Respectfully,
/s/
M. Dillon
'87 124.193 (300TD) "White Whale", ~392k miles, 3.5l IP fitted
'95 124.131 (E300) "Sapphire", 380k miles
'73 Balboa 20 "Sanctification"
Charleston SC

Thats the answer I was looking for, thank you!

I'll let wagon owners keep their heads.

__________________
Nosce Te Ipsum "Know thyself"

Didn't the SDs of that era also have SLS?

__________________
The OM 642/722.9 powered family
Still going strong
2014 ML350 Bluetec (wife's DD)
2013 E350 Bluetec (my DD)

both my kids cars went to junkyard in 2023
2008 ML320 CDI (Older son’s DD) fatal transmission failure, water soaked/fried rear SAM, numerous other issues, just too far gone to save (165k miles)
2008 E320 Bluetec (Younger son's DD) injector failed open and diluted oil with diesel, spun main bearings (240k miles)

1998 E300DT sold to TimFreeh
1987 300TD sold to vstech

The 450SEL and 6.9 did. To my knowledge I have not heard of any 300SD, unless it was custom.

__________________
Nosce Te Ipsum "Know thyself"

The 300SD didn't come with SLS... it was sold only in North America and as the entry-level model. Some of the more expensive W126es did come with it (500/560 SEL/SEC), and in Europe you could get hydropneumatic suspension as well (I don't know if that was available here).

__________________
"Senior Luna, your sense of humor is still loco... but we love it, anyway." -rickymay ____ "Your sense of humor is still loco... " -MBeige ____ "Señor Luna, your sense of humor is quite järjetön" -Delibes

1982 300SD -- 211k, Texas car, tranny issues ____ 1979 240D 4-speed 234k -- turbo and tuned IP, third world taxi hot rod

2 Samuel 12:13: "David said to Nathan, “I have sinned against the Lord.” And Nathan said to David, “The Lord also has put away your sin; you shall not die."

Or you could do what Raptelan planned to do, which was take a 6.9 and install an engine from a 300TD so it would have a pump to run the SLS. That would have been neat.

__________________
Stop paying for animal enslavement, cruelty, and slaughter. Save your health and the planet. Go vegan! I did 18 years ago. https://challenge22.com/

DON'T MESS WITH MY MERCEDES!


1967 W110 Universal Wagon, Euro, Turbo Diesel, Tail Fins, 4 Speed Manual Column Shift, A/C
1980 W116 300SD Turbo Diesel, DB479 Walnut Brown, Sunroof, Highly Optioned, 350,000+ Miles

Any 617 head will fit on any 617 block, it's the things like prechambers, pistons, camshaft valve lift etc that vary

FWIW SLS is hydropneumatic

__________________
1978 300D, 373,000km 617.912, 711.113 5 speed, 7.5mm superpump, HX30W turbo...many, many years in the making....
1977 280> 300D - 500,000km+ (to be sold...)
1984 240TD>300TD 121,000 miles, *gone*
1977 250 parts car
1988 Toyota Corona 2.0D *gone*
1975 FJ45>HJ45
1981 200>240D (to be sold...)
1999 Hyundai Lantra 1.6 *gone*
1980s Lansing Bagnall FOER 5.2 Forklift (the Mk2 engine hoist)
2001 Holden Rodeo 4JB1T 2WD

I have seen 123s with the leveling system. The wagon heads are very rare and if you need one they are tough to find.

__________________
[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.