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Popular Diesel Engine Specs

OM447 bolt torques, specifications and manuals


Useful information for owners and repairers of OM447 engines

OM447 Essential Diesel Engine 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°

OM447 Diesel Engine Specs

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

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

Displacement
11.97 liter, 730 CID


Compression ratio:
447N 16.5:1
447C 16.25:1
447T 16.25:1
447TI 16.25:1

Weight approx:
447N 815 kg, 1793 lb

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

Power 
 447N
235 hp, 175 kW @ 2200 rpm

 447C
241 hp, 180 kW @ 2200 rpm

 447T
298 hp, 222 kW @ 2200 rpm

 447TI
355 hp, 265 kW @ 2100 rpm

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

Torque 
 447N
629 lb.ft, 853 Nm @ 1400 rpm

 447C
664 lb.ft, 900 Nm @ 1300 rpm

 447T
937 lb.ft, 1270 Nm @ 1300 rpm

 447TI
1123 lb.ft, 1523 Nm @ 1100-1500 rpm

OM447 Diesel Engine workshop repair Manuals

Mercedes OM447 Dimensions approx: Mercedes multi engine dimensions image


Barrington Diesel Club
Phone: +27 72 754 4660
email: steve@barringtondieselclub.co.za
© copyright Steve Barrington 2016

Page Revision #11.1RS 09-17

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