The 2.0-liter  Hyundai G4KD  engine was produced in the USA and South Korea from 2008 to 2014 and was installed on many of the company’s popular models until it gave way to the similar G4NA. Now this motor is assembled at the Hyundai Wia plant in Shandong province for the local market.

In 2008, the Hyundai-Kia concern introduced an updated line of Theta II power units, which included two naturally aspirated engines with distributed injection of 2.0 and 2.4 liters. They were distinguished from the predecessors of the Theta family by the presence of phase shifters on both shafts, as well as a new intake manifold equipped with a proprietary VIS geometry change system. In all other respects, these are the same engines with an aluminum cylinder block, cast-iron liners, an aluminum 16-valve block head without hydraulic lifters and a timing chain drive.

In some markets, a modification of this engine with a single phase regulator was installed, especially often such a unit is found on Kia Forte sedans from South Korea.

Theta 2.0L family: G4KA, G4KD, G4KF, G4KH, G4KL.

The engine was installed on:

• Hyundai Sonata 5 (NF) in 2008 – 2010; Sonata 6 (YF) in 2009 – 2014;
• Hyundai ix35 1 (LM) in 2009 – 2013;
• Kia Cerato 2 (TD) in 2008 – 2013;
• Kia Magentis 2 (MG) in 2008 – 2010;
• Kia Optima 3 (TF) in 2010 – 2013;
• Kia Sportage 3 (SL) in 2010 – 2014.