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113.961 MERCEDES-BENZ Petrol 1998-2001

113.961 engine — Mercedes-Benz 5.0 (5L)

5L · 306 hp

Engine overview

Manufacturer
MERCEDES-BENZ
Displacement
5 L
Power
306 hp
Production years
1998-2001
Fuel type
Petrol

Vehicles with this engine

W129

Factory specifications

Values from the manufacturer documentation for this engine.

Engine (general)

Engine code 113.961
Capacity 4966 cc
Idle speed 550 - 800 rpm
Normal 12.0 - 14.0 bar
Minimum 9.0 bar
Normal 10.0 - 12.0 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 2.0
Number of cylinders 8
Firing order 1-5-4-2-6-3-7-8
Spark plug gap 0.8 mm
Oil temperature during test > 60 °C
CO exhaust gas < 0.5 %
Fast-idle speed 2200 - 2800 rpm
CO at fast-idle speed < 0.3 %
Lambda 0.97 - 1.03
Basic method ME (230 - 270) mbar
Alternative method (Germany only) Nr. 2, 0 ± 25

Cooling system

Thermostat opens at 87 ± 2 °C

Electrical

Alternator 150 A

Capacities

Engine sump, incl. filter 8.0 l
Automatic transmission 722.624
Initial filling 8.6 (+ 0.5) l
Differential 1.6 l
Cooling system 12.75 l
Air-conditioner refrigerant 950 g
Air-conditioner compressor oil 140 (10PA17) 150 (TRS105) ml

Torque settings

Automatic transmission drain plug 20 Nm
Oxygen sensor 55 Nm
Spark plugs 28 Nm
Main bearing cap — Stage 1 20 Nm
Main bearing cap — Stage 2 90 °
Main bearing cap — Stage 1 30 Nm
Side bolt of main bearing cap 30 Nm
Front hub 12 Nm
Rear hub 220 Nm
Wheel nuts 110 Nm

Emissions

Emission code 70/220*1996/69
Emission standard Euro 2
CO2 average 300 g/km
CO 0.037 - 0.312 g/km
HC NOx 0.040 - 0.116 g/km

Workshop procedures for this engine

Step-by-step procedures from the workshop database.

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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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Workshop data on this page last updated 22 Aug 2026.