RAM Air System Information

Above and below are installed views of the 429 Mustang non ram air (C-Code) air cleaner.

We have been trying to confirm 1) Whether there was decal on the chrome lid from the factory and 2) If there was a decal, did it say “Cobra” of “Cobra Jet”. Recently, we heard from an original C Code owner who told us his did, in fact, come with a decal on the chrome lid and it said “Cobra Jet”.

Where things stand…

Based on the small amount of info we have received to date, it appears that the 71 429 Mustang Air Cleaner decal may have said “429 Cobra Jet”, however, when reviewing old air cleaner lids, it just isn’t possible to tell if an old decal is original or not, we can’t be certain, so the “429 Cobra” decal could have been used – we just don’t know. One suggestion we received was that the “429 Cobra” decal could have come from a Torino application – not sure. With all the old decals out there, we may never know for sure. Research will continue.

C-code, non-Drag Pack = Motorcraft FA50, 13.3″ OD, 11.3″ ID, 2.8″ tall

J-code, non-Drag Pack = Motorcraft FA74, 13.3″ OD, 11.3″ ID, 2.5″ tall

C-code, Drag Pack = Motorcraft FA41, 13.3″ OD, 11.3″ ID, 2.25″ tall

J-code, Drag Pack = Motorcraft FA50, 13.3″ OD, 11.3″ ID, 2.8″ tall

C-code, non-Drag Pack Mustang and Cougar = two possible: D1AF-9600-HA and D1AF-9600-HB (also fits 1971 Galaxie Police Car before 11/2/70)

J-code, non-Drag Pack Mustang = three possible: D1ZF-9600-FA, D1ZF-9600-FB and D1ZF-9600-FC

J-code, non-Drag Pack Cougar = three possible: D1WF-9600-AA, D1WF-9600-BA and D1WF-9600-BB (uses FA41 filter)

C-code, Drag Pack Mustang = two possible: D1AF-9600-DA and D1AF-9600-DB (Note says US only, but no listing for non-US models — maybe were not sold outside of US or ?)

J-code, Drag Pack Mustang = three possible: D1ZF-9600-AA, D1ZF-9600-AB and D1ZF-9600-AC

There are several air cleaners that closely resemble the 429 Mustang Ram Air air cleaner, but are NOT correct for the 71 429 Mustang. Before buying, look closely at the details. Here are some similar versions to watch out for:

Another 72 Montego? We’re not sure, but definitely not 429 Mustang/Cougar.

The photo above shows the attachment points of the Charcoal Canister and Valve Cover Air Filter Hoses.

Note the stripe and Autolite logo on this original 429 Mustang hose.

The photos above show an example of an Autolite Air Filter housing that attached to the air cleaner with a clip. The nipple on the filter snapped onto the rubber EGR hose from the passenger side valve cover. The two lower photos are to show where the filter housing was installed (note the black version in the example photo is an aftermarket air filter housing)

This is the paper tubing that ran from the passenger side of the air cleaner to the charcoal canister. Up to a few years ago, it was still available from Ford under the D4ZZ part number shown above, but as of 2008, it is no longer available. This is now a difficult item to find.

The Hot Air Tube connects the exhaust manifold heat shield to the air cleaner snorkel. This paper tube is still available from Ford under part # C9UZ-9652-A.

This is the clamp used to secure the Hot Air Tube to the snorkel as shown above. This example is yellow dichromate – the original was silver in color with zinc dichromate plating.