Air cleaner base ID

**McCune** · #1 02-23-2023, 02:10 PM

That base is the last open element air filter Chevy used. It fits a one year only 1973 Z28. The odd tube angle is for clearance of the EGR valve.

**John Brown** · #2 02-23-2023, 04:15 PM

The fact that it tapers down to a 3/4 inch tube makes a big difference. Most all others have a full one inch tube.

**Big Block Bill** · #3 02-23-2023, 09:08 PM

Quote:

Originally Posted by McCune

That base is the last open element air filter Chevy used. It fits a one year only 1973 Z28. The odd tube angle is for clearance of the EGR valve.

Would a 1973 open element Chevrolet base have a flat bottom? After 1970 most I saw had a ridge going around the outside.

Bill

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