Oil Filter Wrench
An oil filter wrench is a tool for loosening a spin-on oil filter or the plastic housing cap of a cartridge filter.
What is Oil Filter Wrench?
Types include cap wrenches, band wrenches and three-jaw pliers. Cap wrenches must match the filter size and number of flats. Filter housings often have a torque value printed on the cap. Rubbing a little fresh oil on the new filter’s seal helps it seat properly and come off easily next time.
How it works
The tool grips the filter body or cap so it can be turned with a ratchet or by hand.
Why it matters for your car
Do not overtighten new filters; hand-tight plus the stated turn is usually enough. Over-tightening a plastic cap can crack it and cause leaks.
Other terms
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