Subaru OEM IHI VF43 Turbocharger 2002-2007 WRX / 2004-2007 STI

Subaru OEM IHI VF Series turbochargers are a direct bolt-on option for the 02-07 WRX & STI, utilizing the factory mounting points and attaching to the factory oil and coolant lines. These turbos are a great upgrade option for 2.0L WRX owners looking to make significantly more power and still retain OEM quality and fitment. These turbochargers are also compatible with many engine management base maps, eliminating the need for custom tuning in some circumstances. 2.5L WRX models (2006-2007) will also benefit from a VF series turbo upgrade, however gains will not be as dramatic as on the 2.0 models as the larger displacement motor will suffer from a taper in power in the high RPM range. STI owners should consider these turbochargers as an OEM replacement only. As with all turbo upgrades, these Subaru OEM VF series turbos will require fueling and tuning upgrades to operate safely.

The IHI VF43 comes stock on the 2007 STI. It has almost identical features of the VF39 with a thrust bearing and a P18 exhaust housing, but the wastegate opening is larger to relieve boost creep issues. The VF43 is capable of 290 whp on the EJ20.