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Popular Diesel Engine Specs


OM442 Essential Diesel Engine Bolt Tightening Torques

 
OM442 Mercedes
Main Bearing Cap Screws 

Center 156 mm max
step 1 = 100 Nm
step 2 = 200 Nm
step 3 = 330 Nm
step 4 = + 90-100°

Main Bearing Cap Screws - Lateral
step 1 = 80 Nm

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OM442 Mercedes
Connecting Rod Bolts

step 1 = 100 Nm
step 2 = + 90-100°

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OM442 Mercedes
Cylinder head Bolts

step 1 = 10 Nm
step 2 = 50 Nm 
step 3 = 100 Nm
step 4 = 140-150 Nm
step 5 = 180-190 Nm
step 6 = + 90-100°

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OM442 Diesel Engine workshop repair Manuals

 

Dimensions approx: ade multi engine dimensions image

OM442, OM443 & OM444 Diesel Engine Specs

 
OM442 Mercedes
Designations
German - English

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

e.g 
om442LA = ADE442TI

Bore
ADE 
Naturally aspirated = 130 mm

Other
Turbo models = 128.00 mm

Stroke
142.00 mm

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OM442 Mercedes
Arrangement

om442
v8 engine
4-stroke cycle
Naturally aspirated

om442A
v8 engine
4-stroke cycle
Turbocharged

om442LA
v8 engine
4-stroke cycle
Turbocharged
Intercooled

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OM443 Mercedes
Arrangement

om443
v10 engine
4-stroke cycle
Naturally aspirated

om443A
v10 engine
4-stroke cycle
Turbocharged

om443LA
v10 engine
4-stroke cycle
Turbocharged
Intercooled

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OM444 Mercedes
Arrangement

om444
v12 engine
4-stroke cycle
Naturally aspirated

om444A
v12 engine
4-stroke cycle
Turbocharged

om444LA
v12 engine
4-stroke cycle
Turbocharged
Intercooled

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OM442 OM443 OM444 
Mercedes
Displacement, compression
ratio and weight

Displacement
om442 - 15.080 liter
om443 - 18.267 liter
om444 - 22.618 liter

Compression ratio
Naturally aspirated = 16.9:1
Turbocharged = 16.25:1

Weight approx
om442 - 815 kg
om442A - 865 kg
om443 - 965 kg
om443A - 1020 kg
om444 - 1115 kg
om444A - 1165 kg
om444LA - 1220 kg

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engine manuals and specs 
 
Mercedes Designations
German - English
A = Turbocharger = T
L = Intercooler = I
OM = Diesel engine = ADE

Power
om442 - 213 kW @ 2100 rpm
om442A - 260 kW @ 2100 rpm
om442LA - 320 kW @ 2100 rpm

om443 - 266 kW @ 2100 rpm
om443A - 325 kW @ 2100 rpm
om443LA - 400 kW @ 2100 rpm

om444 - 320 kW @ 2100 rpm
om444A - 390 kW @ 2100 rpm
om444LA - 480 kW @ 2100 rpm

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engine manuals and specs 
 
Mercedes Designations
German - English
A = Turbocharger = T
L = Intercooler = I
OM = Diesel engine = ADE

Torque
om442 - 1100 Nm @ 1200 rpm
om442A - 1600 Nm @ 1200 rpm
om442LA - 1765 Nm @ 1200 rpm

om443 - 1375 Nm @ 1200 rpm
om443A - 2000 Nm @ 1200 rpm
om443LA - 2200 Nm @ 1200 rpm

om444 - 1650 Nm @ 1200 rpm
om444A - 2400 Nm @ 1200 rpm
om444LA - 2650 Nm @ 1200 rpm

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