There is an ugly part in my old Dodge b250 campervan somebody has helpfully held in place with an coathanger. It consists of a duct (with torn sections) from the manifold up to the intake of the air filter, and rusty remains of a housing that I think used to cover the entire manifold. I'd like to replace it either with a matching part, or maybe just remove it entirely, since it definitely isn't working as intended right now.
From what I understand it is intended to pull in hot air from around the manifold for emissions purposes.
Not exactly sure what to call it, I've tried "heated air inlet duct" and similar terms., but haven't found the part, discontinued or otherwise.
Do I need this part?