Applied to the Jagg oil filter adapters for Twin Cam models to insure the adapter will not rotate during oil filter removal.

All 5 and 6 speed Big Twins have these cartridges, as well as all Evolution Sportster models late 1984→ and Buells →2002. These filters have 6 or 10 µm pores. Dyna models with Evolution engine use 5.5” long cartridges as a standard. This provides some extra ounces of oil to these sporty bikes.