Oil Pump Pick up tube O-ring

Oil Pump Pick up tube O-ring Select in shopping cart small or large O ring - see below: Large O ring fits: 1996-2014 Mustang Cobra and GT 500 All Ford Racing, MMR and Melling HO Oil pumps All 2005-2010 Mustang GT Small O Ring Fits: 1996-2004 Mustang GT with stock oil pump 1999-2004 Lincoln Navigator with stock oil pump