2 x Oil Filter Center Tube
 
This keeps your filter full between starts.  This tube is needed with all late style screw-on filters.
 
Why is this needed?
 
Most modern filters have an "anti drain-back valve" -  but ONLY ON THE INLET PORT.   Without this tube, your oil filter will drain in about 1 week through the filter outlet - Once that  happens, you have zero oil pressure until the filter is completely full!
 
 
Note, the tube is a minor press fit (It MUST seal, otherwise it won't work).