What Lambda sensor will fit to my firends -06 Impreza
 

I live in europe. My friend has AWD -06 Impreza with 1.5 liter petrol engine. He wants to buy new Bosch front lambda sensor to replace the old broken one. We tried to look from bosch website but it didn't find replacement part for 1.5 liter impreza. Does anyone know what model lambda would fit to this car? I have already asked from couple of online shops but i'm still waiting for answer.