Mercedes OM447 engine specifications and manuals

OM447 Mercedes Main Bearing Bolts
12pt bolts
step 1 = 300-330 Nm step 2 = +90-100 degrees

Hex bolts
80-90 Nm + 90-100 degrees

OM447 Mercedes Connecting Rod Bolts
step 1 = 100 Nm
step 2 + 90-100 degrees

OM447 Mercedes Cylinder Head Bolts
step 1 = 10 Nm
step 2 = 50 Nm
step 3 = 100 Nm
step 4 = 140 Nm
step 5 = 180-190 Nm
final step + 90-100 degrees

Mercedes Designations German - English

A = Turbocharger = T
L = Intercooler = I
OM = Diesel engine = ADE

example
OM366 = ADE366N
OM366A = ADE366T
OM366LA = ADE366TI
OM442LA = ADE442TI

Mercedes OM447 Displacement, Compression Ratio, Weight

Displacement
11.97 liter, 730 CID

Compression ratio
447N 16.5:1
447C 16.5:1
447T 16.5:1
447TI 16.5:1

Weight
approx
447N 815 kg, 1793 lb

OM447 Mercedes Arrangement

447N - OM447
6 Cylinder In-Line
4-stroke cycle
Naturally aspirated

447C
6 Cylinder In-Line
4-stroke cycle
Compensated

447T - OM447A
6 Cylinder In-Line
4-stroke cycle
Turbocharged

447TI - OM447LA
6 Cylinder In-Line
4-stroke cycle
turbocharged
intercooled

OM447 Mercedes Power and torque

Power
447N
235 hp, 168 kW @ 2200 rpm

447C
241 hp, 180 kW @ 2200 rpm

447T
298 hp, 213 kW @ 2100 rpm

447TI
355 hp, 265 kW @ 2100 rpm

Torque
447N
629 lb.ft, 842 Nm @ 1300 rpm

447C
664 lb.ft, 900 Nm @ 1300 rpm

447T
937 lb.ft, 1270 Nm @ 1000-1600 rpm

447TI
1123 lb.ft, 1523 Nm @ 1000-1600 rpm