my94pony

hey this was attached to one of my exhaust manifolds but im not sure what it is. also, is it supposed to be connected to a hose or anything?

OnyxCobra

what the **** is that thing?

tohoopty

never seen that before.what year car is it

Jordan's5.0

have no clue what that could be unless it is some sort of aftermarket hanger

mjr46

It is an exhaust warm up valve, when engine is cold the flap is closed and the vaccum canister on there recieves vaccum when a temperature controlled VSV reaches a certain temp in the warm up cycle and directs vaccum to such, these were found on 5.0's up until 1985 with 1 catalytic convertor, it's purpose is to speed warm up time up and achieve good drivibility during the warm up phase while minimizing emissions.

mjr46

OP if you convert to true dual exhaust and aftermarket headers, you won't use that/need it anymore, my 85 had one of those, it looks as if the flap in yours is long gone so it is useless now/ nonfunctional

PRO50SC

It's called a heat riser.