HELP finding my part

Hello, it has been awhile since i have posted but I need HELP!! I have my daughters 1977 gremlin and it has the 121cid inline 4 cylinder carborated and the aluminum smog canister (maybe charcoal) that screws into the top of the intake manifold has broken and I first of all cannot find out what it is called exactly let alone find a replacement.....agh! I need help! thanks and AMC ROCKS!!

That is probably the check valve downstream of theair diverter valve for the air guard system.  The Air Guard system consists of a an air pump and hoses/lines to inject air into the exhaust manifold to enhance the combustion of the hot gases early in their passage through the exhaust.  The part that actually screws into the manifold is called a check valve and it should be common to many other AMC and other makers parts from that era.  A would wager that several forum members can get a used one to you.  Joe

Thanks fellas already with the response I have gotten has helped me identify the part and how to shop for it. Also I am in Oklahoma I done see many AMC show/swap meets around this area, would love to go to some but.....also in these parts good quality salvage yards are dying and already hard enough finding parts for these(drivers side exterior door handle 77' gremlin) and not having luck online either so any directions i can be pointed in that would be GREAT!!!

 I don't know which one that the 151/4 needs. It may take 3 lines or 4 to the canister. BTW the charcoal canisters purpose is to collect vapors when the engine is shut off.  On the 4 line  unit there are two vacuum lines one for ported vacuum and the other for PCV( this is on the 78 six). The  two other bit larger lines are from the carb fuel bowl(nipple next to the fuel inlet) and the fuel tank to "catch"   vapors from those areas. You can block off those lines and be able to operate the car, until you find a replacement. Get a Tech manual as was said. The only issue, except for vapors  venting, maybe more difficult to restart on a hot engine.

Edited by rons - Jun/21/2017 at 1:50pm

Can you take a picture of that part, i´m not sure if VW/Audi used it at that time in germany.