113.995 engine — Mercedes-Benz 5.4 (5.4L)
5.4L · 517 hp
Engine overview
Vehicles with this engine
Factory specifications
Values from the manufacturer documentation for this engine.
Engine (general)
| Engine code | 113.995 |
| Capacity | 5439 cc |
| Normal | 11.0 - 13.0 bar |
| Minimum | 8.0 bar |
| Differential limit between cylinders | < 1.5 bar |
| Oil pressure | > 0.7 / 700 > 3.0 / 3000 bar/rpm |
Engine (petrol)
| Fuel system (make and type) | Bosch Motronic ME 2.8 |
| Number of cylinders | 8 |
| Firing order | 1-5-4-2-6-3-7-8 |
| Injection pressure/system pressure | 3.7 - 4.1 bar |
| Spark plugs (make and type) | Mercedes A0041591303 |
| Spark plug gap | 0.8 mm |
Cooling system
| Cap pressure | 1.4 ± 0.1 bar |
| Thermostat opens at | 87 ± 2 °C |
| Thermostat fully open at | 102 °C |
Electrical
| Battery | 70 / 74 Ah |
| Alternator | 150 A |
Capacities
| Engine sump, incl. filter | 8.5 l |
| Automatic transmission | 722.643 |
| Initial filling | 8.7 l |
| Differential | 1.2 l |
| Cooling system | 13.0 l |
| Air-conditioner refrigerant | 920 g |
| Air-conditioner compressor oil | 120 ml |
Torque settings
| Cylinder head bolts — Stage 1 | 10 Nm |
| Cylinder head bolts — Stage 2 | 30 Nm |
| Cylinder head bolts — Stage 3 | 90 ° |
| Cylinder head bolts — Stage 4 | 90 ° |
| Cylinder head bolts — Stage 1 | 20 Nm |
| Spark plugs | 28 Nm |
| Oxygen sensor | 55 Nm |
| Main bearing cap — Stage 1 | 20 Nm |
| Main bearing cap — Stage 2 | 90 ° |
| Main bearing cap — Stage 1 | 5 Nm |
| Main bearing cap — Stage 2 | 30 Nm |
| Main bearing cap — Stage 3 | 90 ° |
| Side bolt of main bearing cap | 30 Nm |
| Big-end bearing cap — Stage 1 | 5 Nm |
| Big-end bearing cap — Stage 2 | 90 Nm |
| Big-end bearing cap — Stage 3 | 90 ° |
| Automatic transmission drain plug | 20 Nm |
| Wheel nuts | 130 Nm |
| Rear hub | 320 Nm |
Workshop procedures for this engine
Step-by-step procedures from the workshop database.
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Get free diagnosis →Who makes these pages, and how
TorqFix was built by a mechanic — after a 2,700 km drive with five roadside repairs that no diagnostic tool could explain.
The figures on this page come from manufacturer workshop documentation and are shown as they are. The page is assembled automatically from that data — it is not written by an AI. The AI works in the chat, where it answers for your specific car. It writes nothing here.
Variants of the same model differ. Cross-check torque against the factory manual for your engine before final tightening.
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The story behind TorqFix →Workshop data on this page last updated 22 Aug 2026.