Parts for your 2003 Daihatsu Yrv-Oil cap

2003 Daihatsu YRV oil cap — what it does and how to look after it

Yes, the 2003 Daihatsu YRV definitely uses an engine oil filler cap. Technical references that make this clear include: the Daihatsu YRV Owner’s Manual (2001–2005), which labels the “ENGINE OIL FILLER CAP” in the engine bay overview and in the Engine Oil section