Spin-on filters vs filter elements: how to choose
Most heavy-equipment filters come in one of two forms: a sealed spin-on can or a replaceable element in a permanent housing. Your machine's filter head decides which you need.
What each one is
A spin-on filter is a complete can: media, base plate, gasket and a threaded centre that screws onto the filter head. The whole can is replaced.
A filter element, also called a cartridge, is the media pack only. It sits inside a bowl or canister that stays on the machine, and only the element is replaced.
Spin-on: strengths and limits
Changes are quick and the technician does not touch the dirty media. The trade-off is that the steel can is thrown away with every change, and size is limited by what the head can carry.
Element: strengths and limits
Less metal goes to waste, and housings can hold larger media packs for high-flow systems. The housing must be cleaned with care during the change, and its O-rings and seals are normally replaced each time.
You cannot simply swap one for the other
The filter head or housing on the machine sets the form. Changing from element to spin-on, or back, needs a different head or a conversion kit. Use the same form as the part you are replacing.
How to identify a replacement
For a spin-on filter, measure the thread, gasket outer and inner diameter, height and outer diameter. For an element, measure height, outer and inner diameter, and note the end cap and seal type.
In SDN part numbers the prefix GS marks a spin-on filter; other G prefixes are elements.
Related products
See our spin-on hydraulic cans, each listed with its thread.
For housings that take cartridges, browse fuel elements and cartridges.
Have an old filter in hand? Find a match by its measurements.