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capemaykid 11-09-2003 07:38 AM
Motor Identification
 
I have a 1975 450 SL that I'm restoring. Where are the motor identification numbers ?

MikeTangas 11-09-2003 01:19 PM
You should have either a M 117.982 or a M 117.985, not sure what year the engine changed.

capemaykid 11-10-2003 05:37 AM
THANKS

BobK 11-10-2003 07:20 AM
I believe 1976 was the year they changed to the 985 CIS engine.

sitarski 04-20-2005 12:49 PM
Quote:
Originally Posted by capemaykid
I have a 1975 450 SL that I'm restoring. Where are the motor identification numbers ?
The motor identification numbers are on the left side of the engine block close to the bottom of the engine aft of the motor mount just above the oil pan. There will also be the date of manufature for the engine.

deanyel 04-20-2005 08:23 PM
Should be a 982 - 1976 was the first year of the 985.

lino 04-20-2005 08:57 PM
Quote:
Originally Posted by deanyel
Should be a 982 - 1976 was the first year of the 985.
You are correct according to:

http://www.thebenzbin.com/chassisEngine.html


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