Inside a cartridge type motorbike oil filter

The inner workings of a motorcycle cartridge type oil filter (also known as a paper oil filter). This oil filter was brand new and never used when we dismantled it.

Motorbike cartridge filter

Intact Oil filter prior to disassembly

Filter cut in half

Oil filter cut in half

The oil cartridge type oil filter was cut in half to show the inner workings.

Interior of the oil filter
Paper element and casing
Paper filter element and metal case

Interior of the oil filter showing the paper filter element and the protective metal casing.

The interior metal strainer of the oil filter, there to help the filter keep it’s shape.

Interior of a cartridge oil filter

The internal metal parts of the oil filter

The sides and bottom/top of the oil filter, both top and bottom on this oil filter are the same size with no differences (which is common on most cartridge filters).

Right side of the oil filter
Left side of the oil filter
Bottom/top of the oil filter

Sides and bottom of the motorbike oil filter

Interior of the oil filter showing a side/section view of the paper filter element.

Half section of the filter with the rubber sealing ring

View showing the paper filter element inside the cartridge filter

Interior metal cage of the filter with the paper element cut away.

Interior oil filter metal cage
Oil filter metal cage close up

View of the metal cage inside the oil filter

1 of the 2 rubber sealing rings located on the top and bottom of the filter. These rubber rings are fairly heat resistant to withstand the heat from the engine and the heat of the oil. These oil seals are there to stop clean and dirty oil from mixing and getting where they shouldn’t be.

Oil filter rubber sealing ring

Rubber sealing ring from the oil filter

Paper filter element of the filter showing the fibres which are designed to filter out and trap waste particles from the used engine oil.
The fibres are quite densly packed, it’s more like a cloth then paper and this is to trap waste particles from the engine ignition process.

Oil filter paper element
Oil filter paper element close up

Paper element inside the filter

This element is why the oil filter should be changed regularly and why changing the engine oil without changing the oil filter is a waste of time and money (this element stops alot of the particles but not all, hence why engine oil turns black after a short period).

The information provided on this page is ‘to the best of our knowledge’ and should not be taken as 100% accurate!!

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