The Hyundai Delta family is the company's smaller V6 engine, ranging from 2.5 to 2.7 L (2,493 to 2,656 cc).

The G6BW/G6BV (also called the 2.5 D) is the 2.5 L; 152.1 cu in (2,493 cc) version in a 90˚ configuration with an 84 mm (3.31 in) bore.

The G6BA/G6BAX/G6BAY (also called the 2.7 D) is the larger 2.7 L; 162.1 cu in (2,656 cc) version available in either 60˚ or 90˚ configuration with an 86.7 mm (3.41 in) bore.

It uses Multi-port fuel injection, has 4 valves per cylinder, and features powder metal-forged, fracture-split connecting rods.

Oullim Motors have developed a turbocharged version of the 2.7 L Delta engine in Oullim Spirra that can produce up to 600 PS (592 hp; 441 kW) at 6,000 rpm.