The headlight is not a part of the emissions system.
Catalytic converter
Fuel filter.
fuel filter
YesYes
No. Normally is is considered part of the fuel system.
Yes, it is an intercal part of the emissions system.
No. The muffler is a passive component in the exhaust emissions system.
yes
yes
Yes
Yes it is part of the emissions system. It turns exhaust into lower emissions by burning any unburnt exhaust gases thus reducing unwanted emissions and Carbon Monoxide.
Yes it is part of the emission systems.