Engine Hyundai-Kia G6DJ

The 3.8-liter gasoline engine Hyundai G6DJ or Genesis 3.8 GDi has been produced since 2011 and is installed on many rear-wheel drive models of the company, especially under the Genesis brand. This motor is also found under the hood of executive class sedans such as Equus and Quoris.

Lambda 3.8L family: G6DA, G6DJ, G6DK, G6DN.

The engine was installed on:

  • Hyundai G80 1 (DH) in 2016 – 2020;
  • Hyundai G90 1 (HI) since 2015;
  • Hyundai Equus 2 (VI) in 2011 – 2016;
  • Hyundai Genesis 1 (BH) in 2011 – 2014; Genesis 2 (DH) in 2013 – 2016;
  • Hyundai Genesis Coupe 1 (BK) in 2012 – 2016;
  • Kia Quoris 1 (KH) in 2012 – 2018;
  • Kia K900 2 (RJ) since 2018.


Production years since 2011
Displacement, cc 3778
Fuel system direct injection
Power output, hp 311 – 353
Torque output, Nm 395 – 400
Cylinder block aluminum V6
Block head aluminum 24v
Cylinder bore, mm 96
Piston stroke, mm 87
Compression ratio 11.5
Features VIS
Hydraulic lifters no
Timing drive chain
Phase regulator Dual CVVT
Turbocharging no
Recommended engine oil 5W-30
Engine oil capacity, liter 6.9 (there are versions with a pallet of 5.7 liters)
Fuel type petrol
Euro standards EURO 5
Fuel consumption, L/100 km (for Hyundai Genesis 2015)
— city
— highway
— combined
Engine lifespan, km ~320 000
Weight, kg 221 (with attachments)

Disadvantages of the Hyundai G6DJ engine

  • First of all, units with GDi injection suffer from carbon deposits on the intake valves;
  • Also, the occurrence of piston rings and the subsequent oil burner are often found here;
  • Keep the cooling system clean, the aluminum block prevents overheating;
  • On long runs, timing chains can stretch, and replacing them will be expensive;
  • And do not forget to adjust the valve clearance, since there are no hydraulic lifters here.

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