Old Part Numbers: K15O-ring for oil fill bolt

Includes Unloader Valve.

Old Part Numbers: K25For flywheel. Replace when rebuilding pump. Included in the KU Rebuild Kit.

Old Part Numbers: L23A, 220-102810-3/8" OD Flywheel for model "D", includes K25 roll pin.

Old Part Numbers: K133This air compressor pump ring kit includes rings for two pistons. Order two sets for v-twin air compressor pumps. Stagger rings and hone cylinders.  Replace if the pump is losing compression or using too much oil.Technical...

Old Part Numbers: L21K, 310-1001-01Replace this if worn or damaged. Torque to 120 in lbs. (Includes bearing shell inserts). NOTE: These new-style rods will install on old-style (non-bearing insert) pumps, as well as on the new-style pumps! For older...