Early GTO Factory Air Cleaners

[60sStuff]

Here are 2 NOS A193C foam filters sealed in a thick plastic bag inside the AC box.
Also a NOS A224C foam filter for the separate air cleaner for the smog pump.
The 1966 Owners Guide spells out cleaning instructions for the foam filters.

The A224C filter was a flat square perforated metal plate sandwiched in foam.
This filter slid inside the plastic AC canister. You can see the dirt inside the inlet side before the filter, then a cleaner air was pulled forward to the air pump.

Photo from a 60’s magazine test article.

[60sStuff]

Although the old Original first design foam filters are cool, they are a mess to maintain.

The foams were replaced soon after with the user friendly paper with wire mesh sandwiched by a durable rubber base.
There was no need for the round brass screen supports any longer.

The second design filter A220C had a ‘soldered’ mesh for support and is extremely hard to find. I have a boxed set of NOS 1967 filters.

Next up is the third and final design filter that uses a fine clean mesh with no solder. This filter is readily found today.