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Mercedes OM407 & OM409 specs, bolt torques, spec sheets and manuals

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Your Diesel Engine Specs

Basic specs are open to everyone and include images, displacement, dimensions and weight, essential bolt tightening torques, the characteristics of the engine like its power and torque.
Essential bolt tightening torques are the main bearing cap bolt torque, the connecting rod cap bolt torque and the cylinder head bolt torques.


Some Popular Engine Specs


OM407-409 bolt torques, specifications and manuals


Useful information for owners and repairers of OM407-409 engines

407 essential bolt tightening torques

Main Bearing Bolts 
12pt bolts:
 300 Nm + 90-100° 
Hex bolts:
 80-90 Nm + 90-100°

Connecting Rod Bolts
step 1 = 100 Nm 
step 2 + 90-100°

Cylinder head Bolts
step 1 =  10 Nm
step 2 =  60 Nm
step 3 = 120 Nm
step 4 = 180 Nm
final step + 90-100°

Mercedes 407 and 409 manuals and spec sheets

Dimensions approx: ade multi engine dimensions image

407 specifications

Arrangement
OM407 -ADE407N
6 Cylinder In-Line
4-stroke cycle
Naturally aspirated

ADE407C
6 Cylinder In-Line
4-stroke cycle
Compensated

OM407A - ADE407T
6 Cylinder In-Line
4-stroke cycle
Turbocharged

Designations
German - English
A = Turbocharger = T
L = Intercooler = I
OM = Diesel engine = ADE 

Displacement
11.41 liter

Compression ratio:
407N 16.5:1
407C 16.0:1
407T 16.0:1

Weight approx:
407N 795 kg, 1749 lb

Designations
German - English
A = Turbocharger = T
L = Intercooler = I
OM = Diesel engine = ADE

Power 
 407N
233 hp, 174 kW @ 2200 rpm

 407C
234 hp, 175 kW @ 2200 rpm

 407T
276 hp, 206 kW @ 2200 rpm

Designations
German - English
A = Turbocharger = T
L = Intercooler = I
OM = Diesel engine = ADE

Torque 
 407N
614 lb.ft, 823 Nm @ 1400 rpm

 407C
727 lb.ft, 975 Nm @ 1300 rpm

 407T
868 lb.ft, 1177 Nm @ 1300 rpm





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