The paint was dry enough to re-assemble the air cleaner today. I'm glad to get these small painting jobs out of the way before it gets too cold in the garage, as most paints appear to require approximately 20 degrees C for proper application, and it's already becomming a struggle to keep the garage at that temperature. Mechanical items can be done when it's colder.
Air cleaner has a rust transformer as the primer, and Eastwood's Extreme 3X Chassis Black as the topcoat (as on the other black steel parts as well). This is the same topcoat that will go on the chassis. I masked off the air cleaner's flange just to stop scratches from the clasps from showing up; also masked off the overlap of the top cover to the main cleaner body (just visible in the top photo), as the top had become stuck around the rim there before, and adding paint probably wouldn't help in getting the top off in the future. Doesn't show when the top is on.