Fit For SWM G01 G05 1119100-D02 1119100-D03 Intercooler Assembly. OEM NO. : 1119100-D02 1119100-D03. By significantly lowering the temperature of air compressed by the turbocharger, the intercooler increases its density, allowing more oxygen to enter the cylinders for combustion. Lowering Intake Air Temperature: Cools the high-temperature air compressed by the turbocharger through air-to-air or air-to-water heat exchange, preventing damage to intake sensors. Increasing Air Density: The increased density of cooled air allows more oxygen to enter the cylinders, improving combustion efficiency., Manufacturer: DGOINGPI