Mercedes OM443 Manuals, Engine Specifications & Bolt Torques

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OM443 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 degrees

Main Bearing Cap Screws - Lateral
Step 1 = 80 Nm

OM443 Mercedes
Connecting Rod Bolts

Step 1 = 100 Nm
Step 2 = + 90-100 degrees

OM443 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 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 OM443
Displacement, Bore, Stroke,
Compression Ratio, Weight

Displacement
OM443 - 18.267 liter

Bore
ADE
Naturally Aspirated = 130 mm

Other
Turbo Models = 128.00 mm

Stroke
142.00 mm

Compression Ratio
Naturally Aspirated = 16.9:1
Turbocharged = 16.25:1

Weight
approx
OM443 - 965 kg
OM443A - 1020 kg

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

OM443 Mercedes
Power and Torque

Power
OM443 - 266 kW @ 2100 rpm
OM443A - 325 kW @ 2100 rpm
OM443LA - 400 kW @ 2100 rpm

Torque
OM443 - 1375 Nm @ 1200 rpm
OM443A - 2000 Nm @ 1200 rpm
OM443LA - 2200 Nm @ 1200 rpm