Description: 95-18. C0 U4 U6. An engine oil pump for a vehicle. Fits Baja, Forester, Impreza, Legacy, Outback, STI, WRX Engine Oil Pump If the oil pump in your Subaru is in need of attention, you'll likely have an oil pressure light or notice your oil pressure gauge reads low. Your engine might also sound noisier than usual. Baja. Exc.Calif. All models. Legacy/Outback. Impreza, Legacy. 2.5L w/ turbo. Forester, Impreza.