The Omega Ω is a V8 engine produced by Hyundai Motor Company.

It is a dual overhead cam design with electronic multiport fuel injection or gasoline direct injection.

The G8AA (also called the 4.5D) displaces 4.5 L (4498 cc) with a 86 mm (3.4 in) bore, 96.8 mm (3.81 in) stroke and a 10.7:1 compression ratio.

The dry weight of the engine is 236 kg (520 lb).

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