Why Do Some Replacement Exhaust Manifolds Come With Catalytic Converters?

2008 Honda Pilot Bank 1 Catalytic Converter

Catalytic accord replacement p0420 Why do some replacement exhaust manifolds come with catalytic converters?

Catalytic converters placement manifolds 2005 honda pilot catalytic converter bank 1 replacement – latest cars

2005 Honda Pilot Catalytic Converter Bank 1 Replacement – Latest Cars

2005 Honda Pilot Catalytic Converter Bank 1 Replacement – Latest Cars
2005 Honda Pilot Catalytic Converter Bank 1 Replacement – Latest Cars

Why Do Some Replacement Exhaust Manifolds Come With Catalytic Converters?
Why Do Some Replacement Exhaust Manifolds Come With Catalytic Converters?