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Mercedes OM400 series engine specifications and manuals

 
Diesel Engine Specs and manuals
Diesel Engine manuals and specifications at Barrington Diesel Club
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Mercedes OM400 Essential Diesel Engine Bolt Tightening Torques

 
OM400 engines Mercedes
Main Bearing capscrews

Step 1 = 100 Nm
Step 2 = 200 Nm
Step 3 = 300 Nm
Step 4 = + 90 degrees
Step 5 = + 10 degrees

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 specs and manuals
 
OM400 engines Mercedes
Connecting Rod Bolts

Step 1 = 45 Nm
Step 2 = 100 Nm
Step 3 = + 90 degrees
Step 4 = + 10 degrees

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 specs and manuals
 
OM400 engines Mercedes
Cylinder Head Bolts

Step 1 = 10 Nm
Step 2 = 50 Nm
Step 3 = 100 Nm
Step 4 = 140 Nm
Step 5 = +90 degrees 
Step 6 = +10 degrees

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 specs and manuals
 

OM400 series Diesel Engine firing orders and Data Sheet

 
firing orders om400 engines
Firing orders for the om400 engines 
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om401 data sheet
OM401 Data Sheet 
with detailed specs 
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Mercedes
Designations
German - English
A = Turbocharger = T
L = Intercooler = I
OM = Diesel engine = ADE

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

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 specs and manuals
 

OM400 engines Diesel Engine Specs

 
OM400 engines Mercedes
Displacement,
bore and stroke

Displacement
OM401 -  9.57 liter,  584 CID
OM402 - 12.76 liter,  779 CID
OM403 - 15.95 liter,  973 CID
OM404 - 19.12 liter, 1168 CID

Bore
125 mm, 4.92 in 

Stroke
130 mm, 5.12 in
 
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 specs and manuals
 
OM400 engines Mercedes
Arrangement

OM401 - 6v Natural Aspiration
OM401LA - 6v Turbo Aftercooled

OM402 - 8v Natural Aspiration 
OM402LA - 8v Turbo Aftercooled 

OM403 - 10v Natural Aspiration 

OM404 - 12v Natural Aspiration
OM404LA - 12v Turbo Aftercooled
 
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 specs and manuals
 
OM400 engines Mercedes
Weight, compression ratio,
power, torque

Weight
approx
OM401 - 700 Kg
OM401LA - 760 Kg

OM402 - 815 Kg 
OM402LA - 875 Kg

OM403 - 965 Kg 

OM404 - 1115 Kg
OM404LA - 1200 Kg

Compression ratio
Natural Aspiration 17.2:1

Power 
OM401 - 189 hp, 141 kW @ 2500 rpm

OM401LA - 296 hp, 221 kW @ 2500 rpm

OM402 - 252 hp, 188 kW @ 2500 rpm 

OM402LA - 295 hp, 220 kW @ 2500 rpm 

OM403 - 315 hp, 235 kW @ 2500 rpm

OM404 - 378 hp, 282 kW @ 2500 rpm

OM404LA - 443 hp, 330 kW @ 2500 rpm 

Torque
OM401 - 462 lb.ft, 627 Nm @ 1300 rpm

OM401LA - 540 lb.ft, 734 Nm @ 1300 rpm

OM402 - 616 lb.ft, 836 Nm @ 1300 rpm 

OM402LA - 721 lb.ft, 978 Nm @ 1300 rpm 

OM403 - 760 lb.ft, 1030 Nm @ 1500 rpm

OM404 - 912 lb.ft, 1236 Nm @ 1300 rpm

OM404LA - 1247 lb.ft, 1690 Nm @ 1300 rpm 
 
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 specs and manuals
 



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