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. This part notably reduces the burden on the engine's main cooling system by extracting heat from the intake manifold before the intake air makes its way into the cylinder. The intercooler protects fragile engine monitoring sensors, for instance the mass airflow sensor and intake air temperature sensor, from impairment caused by drastic temperature extremes., Manufacturer: GKLZIUKI