A friend of mine is desperately searching for a usable crankshaft from a 603970-971 or 972 PN: A6030312501 old numbers: A6030300801-A6030300701. They were found in '90 '91 350SDL W126 And S350 turbo diesel W140. Please contact me if you hear of something. e-mail: tr105@simnet.is

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600SEL '91
300E 4Matic '88
240D '83
280SE '77
350SE '73
The most complex systems can fail in the simplest way.
Contra verbosus noli contendere verbis, sermo datur cunctis, animi sapientia paucis.

i don't believe in the lord! He's never bought me a Mercedes Benz.

Car-Part.com--Used Auto Parts Market

I did a search under 91 Mercedes 350, crankshaft. Shows two available. One is in Philliston MA, the other is in Toledo. One in MA $500 (ouch), one in Toledo says call.

Searching there for an engine, theres about 14, though most are cores/parts motors. Likely one of them would sell a crank.

check in the parts section I think someone has a 3.5L crank for sale