What is differene between PH43 and PH18 Fram oil filters?

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It's not PH-18, it is PH-16 that interchanges with PH-43, along with many others.PH-16 is 3.69 inches tall. The PH-43 is 4.05 inches tall.
 
I could use a part number for a good quality oil filter with a anti drain back valve, the short one. Also one for more flow and one that has more filtration. Thanks all.
 

I could use a part number for a good quality oil filter with a anti drain back valve, the short one. Also one for more flow and one that has more filtration. Thanks all.

I think the Ford FL1A has the anti drain back valve. I have used them plenty of times on a small block with a 90 degree adapter. I use a gray scuff pad to get the Ford logo off, and then put a Mopar Performance sticker on it....lol.
 
I'd rather see a Ford filter on a MoPar than a Fram. Wal-Mart SuperTech filters are MUCH higher quality units than Fram! I run the SuperTech ST-2 on my Ford...
 
I think the Ford FL1A has the anti drain back valve. I have used them plenty of times on a small block with a 90 degree adapter. I use a gray scuff pad to get the Ford logo off, and then put a Mopar Performance sticker on it....lol.

I'd rather see a Ford filter on a MoPar than a Fram. Wal-Mart SuperTech filters are MUCH higher quality units than Fram! I run the SuperTech ST-2 on my Ford...

Purolator makes Ford/Motorcraft filters.
 
PH43 and PH16 have the same base and diameter. Both will work on a small block. The PH43 is a bit shorter and gives extra clearance for headers.
 
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