Engine Renault N7U

The 2.5-liter Renault N7U gasoline engine was produced in Sweden from 1996 to 2000 and was installed only on a restyled version of the popular Safrane model on the European market. This power unit is essentially a Volvo engine known under the index B5244S.

The N-series also includes: N7Q.

The engine was installed on:

  • Renault Safrane 1 (B54) in 1996 – 2000.


Production years 1996-2000
Displacement, cc 2435
Fuel system injector
Power output, hp 165
Torque output, Nm 211
Cylinder block aluminum R5
Block head aluminum 20v
Cylinder bore, mm 83
Piston stroke, mm 90
Compression ratio 10.5
Features DOHC
Hydraulic lifters yes
Timing drive belt
Phase regulator no
Turbocharging no
Recommended engine oil 5W-40
Engine oil capacity, liter 6.5
Fuel type petrol
Euro standards EURO 2
Fuel consumption, L/100 km (for Renault Safrane 1998)
— city
— highway
— combined
Engine lifespan, km ~350 000
Weight, kg 171

Disadvantages of the Renault N7U engine

  • The most famous problem with this motor is oil leakage from the oil separator;
  • Also, due to clogged crankcase ventilation, a decent oil consumption may appear;
  • Change the timing belt more often than the prescribed 120,000 km, since when it breaks, the valves bend;
  • Do not allow the power unit to overheat, the gasket breaks through here very quickly;
  • Other weak points of the engine include its supports, pump, thermostat and fuel pump.

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