What engine type (126? or?) is the following engine number?

11798612053713

from a 560SEL or 560SEC

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M117

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Not sure exactly what the question is but it's a fuel injected 4.5 liter from a mid-70s 116 chassis, 450SE or 450SEL, the 53,713th one of its type.

http://www.mbwholesaleparts.com/wholesaleparts/ModelChart/usmodels.htm

Thank you all for your replies. What I am trying to establish is if this engine is an aluminum block 5.0 common to all Mercedes 126 V8 models 1980 to 1991 that start with engine number 117961, 963, ... etc. OR the old 116 model iron block 4.5 liter installed in the 450 series 116 Mercedes cars that would have engine number starting with 116XXXXX?.

?? See the engine number you gave us. If it's a 117, it can't be a 116 too. There never was a 4.5 liter 116 motor - just 3.5, 3.8 and 4.2.

Try a magnet on the block perhaps...?

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Benz Fleet:
1968 UNIMOG 404.114
1998 E300
2008 E63


Non-Benz Fleet:
1992 Aerostar
1993 MR2
2000 F250

What it is: a mechanical fuel-injected 4.5L cast-iron V8 from a 116 body:
1976-1980 450SE (Engine:117.986; Chassis:116.032;)
1976-1980 450SEL (Engine:117.986 4.5 V8; Chassis:116.033;)

What it is NOT:
280SE (Engine:117.984 4.5 V8; Chassis:108.067;)
280SEL (Engine:117.984 4.5 V8; Chassis:108.068;)
300SEL (Engine:117.981; Chassis:109.057;)
350SL (Engine:117.982; Chassis:107.043;)
350SL (Engine:117.982; Chassis:107.044;)
450SE (Engine:117.983; Chassis:116.032;)
450SEL (Engine:117.983; Chassis:116.033;)
450SL (Engine:117.982; Chassis:107.044;)
450SLC (Engine:117.982; Chassis:107.024;)
450SL (Engine:117.985; Chassis:107.044;)
450SLC (Engine:117.985; Chassis:107.024;)
500SEC (Engine:117.963; Chassis:126.044;)
500SEL (Engine:117.963; Chassis:126.037;)
560SEC (Engine:117.968; Chassis:126.045;)
560SEL (Engine:117.968; Chassis:126.039;)
560SL (Engine:117.967; Chassis:107.048;)

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