Just received my order from FCPEuro, and one of my Mann filters had a dent in the top. FCPEuro has already shipped me a replacement, and I was free to do what ever with the dented filter, so I decided to cut it open.
This is a Mann W/917. It has 90 pleats total, and the seam is metal crimped. The weight was 15.2 ounces on my postal scales. Height is 3.35 inches, and case diameter is 3.66 inches. It has a silicone ADBV. The base gasket was hardest to remove of any oil filter I have cut open to date. Most base gaskets just pull right off with a little tug. I had to work at it to get this one off, and work even harder to get it back on. From the pictures, you can see a big spring that works the bypass valve. The bypass valve is that little black button looking thing. The pleats were very straight, and this is one of the best looking filters I have ever seen construction wise. It is top quality that's for sure.
This is a Mann W/917. It has 90 pleats total, and the seam is metal crimped. The weight was 15.2 ounces on my postal scales. Height is 3.35 inches, and case diameter is 3.66 inches. It has a silicone ADBV. The base gasket was hardest to remove of any oil filter I have cut open to date. Most base gaskets just pull right off with a little tug. I had to work at it to get this one off, and work even harder to get it back on. From the pictures, you can see a big spring that works the bypass valve. The bypass valve is that little black button looking thing. The pleats were very straight, and this is one of the best looking filters I have ever seen construction wise. It is top quality that's for sure.