Engine Opel Y26SE

The 2.6-liter Opel Y26SE or LY9 engine was assembled in the UK from 2000 to 2003 and was installed on restyled versions of such popular models as the Vectra B and Omega B. This gasoline engine belongs to the very extensive General Motors 54° V6 engine family.

The Y line includes: Y26SE, Y32SE.


Production years 2000-2003
Displacement, cc 2597
Fuel system distributed injection
Power output, hp 170 – 180
Torque output, Nm 240 – 250
Cylinder block cast iron V6
Block head aluminum 24v
Cylinder bore, mm 83.2
Piston stroke, mm 79.6
Compression ratio 10.0
Features DOHC
Hydraulic lifters yes
Timing drive belt
Phase regulator no
Turbocharging no
Recommended engine oil 5W-40
Engine oil capacity, liter 5.75
Fuel type petrol
Euro standards EURO 3
Fuel consumption, L/100 km (for Opel Omega 2002)
— city
— highway
— combined
Engine lifespan, km ~300 000
Weight, kg 198

The engine was installed on:

  • Opel Omega B (V94) in 2000 – 2003;
  • Opel Vectra B (J96) in 2000 – 2002.

Disadvantages of the Y26SE engine

  • A known weak point of this unit is the constantly leaking heat exchanger.
  • Also, a lot of trouble is caused by the unreliable crankcase ventilation system.
  • After 250,000 km, the performance of the oil pump decreases, which is dangerous for the engine.
  • It is important to monitor the cooling system; if it overheats, it immediately breaks through the cylinder head gaskets.
  • The remaining problems are associated with failures of the ignition coils, lambda probes and crankshaft position sensor.

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