Engine Opel A28NET

The 2.8-liter Opel A28NET or LP9 engine was produced in Australia from 2008 to 2013 and was installed on charged versions of the Insignia and on the second generation Saab 9-5 under the B284L index. There was a modification of this turbo unit under the index A28NER, boosted to 325 hp and 435 Nm.

The A-series also includes engines: A20NFT, A20NHT, A24XE and A30XH.

The engine was installed on:

  • Opel Insignia A (G09) in 2008 – 2013;
  • Saab 9-5 II (YS3G) in 2010 – 2012 (as B284L).


Production years 2008-2013
Displacement, cc 2792
Fuel system distributed injection
Power output, hp 260
Torque output, Nm 350
Cylinder block aluminum V6
Block head aluminum 24v
Cylinder bore, mm 89
Piston stroke, mm 74.8
Compression ratio 9.5
Features no
Hydraulic lifters yes
Timing drive chain
Phase regulator on all shafts
Turbocharging Mitsubishi TD04
Recommended engine oil 5W-30
Engine oil capacity, liter 6.3
Fuel type petrol
Euro standards EURO 5
Fuel consumption, L/100 km (for Opel Insignia 2010)
— city
— highway
— combined
Engine lifespan, km ~350 000
Weight, kg 215

Disadvantages of the A28NET engine

  • This turbo engine overheats quickly, so keep an eye on the cooling system;
  • Timing chains have a very modest resource, and their replacement will be quite expensive;
  • It is very common for air to leak through the pipe from the air filter;
  • The turbine is reliable here, but the wastegate membrane often bursts;
  • The weak points of the unit include its control unit, vacuum and gasoline pump.

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