Mercedes-Benz OM617 Engine Specs
Mercedes-Benz
Quick overview
Mercedes-Benz OM617 is a 3.0L (2998 cc) diesel engine with 75-125 HP, 181-240 Nm, 21.0:1 compression ratio. Fuel consumption: 7-9 L/100km. Typical service life: 500,000+ km with proper maintenance.
75-125
HP
3.0L (2998 cm³)
Displacement
181-240 Nm
Torque
Diesel
Fuel
Description
The Mercedes-Benz OM617 is a legendary naturally aspirated diesel inline-5 engine known for exceptional durability and longevity. Built during Mercedes' golden era of over-engineering, many examples have exceeded 500,000+ miles with proper maintenance. It's considered one of the most reliable diesel engines ever produced.
General Information
Production Years:
1974-1991
Fuel Type:
Diesel
Environmental Standards:
Pre-Euro
Fuel Consumption:
7-9 L/100km (26.1-33.6 mpg)
Power (HP):
75-125
Power (kW):
55-92
Displacement:
3.0L (2998 cm³) (182.9 cu.in)
Torque:
181-240 Nm (133-177 lb-ft)
Cylinder Block Alloy:
Cast iron
Cylinder Head Alloy:
Cast iron
Has Turbo:
No
Engine Layout:
I5
Aspiration Type:
Naturally Aspirated
Fuel System:
Mechanical Injection
Head Type:
SOHC
Timing Drive:
Chain
Cooling Type:
Liquid-cooled
Engine Cycle:
Diesel Cycle
Cylinders Count:
5
Technical Details
Total Valves:
20
Firing Order:
1-2-4-5-3
Compression Ratio:
21.0:1
Hydraulic Lifters:
No
Maintenance
Oil Capacity:
7.5L (7.9 qts)
Recommended Oil:
Mercedes-Benz MB 228.3 15W-40 Diesel
Operating Temperature:
80-95°C (176-203°F)
Service Life (km):
500,000+ km with proper maintenance (311 miles)
Timing Belt/Chain Interval:
Chain - no replacement needed