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1928 Sport Coupe · 02-14-2026, 01:31 AM

Be careful with these parts. I purchased one awhile back.
The Model A valve cover filter adapter is made to use an FL-1A Motorcraft filter or equivalent, the nipple is 3/4"-16. The 90 degree adapter input end screws onto the 3/4"-16 nipple fine but the output end of this 90 degree adapters is supplied with a 22x1.5mm nipple and uses a FL-820-S Motorcraft oil filter or equivalent. That would have been ok, except the output nipple will not screw into the 90 degree housing, it will only screw in about 1/4 of a turn before it gets tight. Either the female thread is out of specification or the nipple is. The supplied nipple will screw into the FL-820-S filter ok.
Ideally I thought the output should be the same as the valve cover adapter is. Then you could use the Motorcraft FL-1A or FL-400-S or equivalent filters. I use FL-820-S filters on two of my other vehicles so I thought that would be OK.

02-14-2026, 01:31 AM	#19
1928 Sport Coupe Member Join Date: May 2022 Location: Ohio Posts: 98	Re: Lubrication Question Be careful with these parts. I purchased one awhile back. The Model A valve cover filter adapter is made to use an FL-1A Motorcraft filter or equivalent, the nipple is 3/4"-16. The 90 degree adapter input end screws onto the 3/4"-16 nipple fine but the output end of this 90 degree adapters is supplied with a 22x1.5mm nipple and uses a FL-820-S Motorcraft oil filter or equivalent. That would have been ok, except the output nipple will not screw into the 90 degree housing, it will only screw in about 1/4 of a turn before it gets tight. Either the female thread is out of specification or the nipple is. The supplied nipple will screw into the FL-820-S filter ok. Ideally I thought the output should be the same as the valve cover adapter is. Then you could use the Motorcraft FL-1A or FL-400-S or equivalent filters. I use FL-820-S filters on two of my other vehicles so I thought that would be OK.