No, it's not. Grnwagon confused you by saying it is the same but it has not been confirmed to be true. That is why he said you would potentially order custom thickness gaskets from Cometic. Doesn't sound like valuable info to me as all Subaru 2L motors have the exact same bore but may have different thickness gaskets. Do not use an EJ205 head gasket unless you confirm it is the exact same thicknessThis is exactly the reason I was asking. I tend to keep vehicles until they're completely dead, which means that although the new EJ203 I received has under 40,000 miles, I may eventually need to do head gaskets on it. Knowing now that the 2002-2005 WRX EJ205 head gaskets are compatible with the EJ203 is valuable information.