Use this adapter if your wiring harness fits EV1 (Standard Bosch-type) fuel injectors with the rectangle connector and your new injectors are Denso or Bosch injectors with the Sumitomo connector - an oval connector with side-guides and a notch-and-lock on the top and bottom. Fits: Polaris RANGER 700 4x4 2006 2008-2009 RANGER 700 4x4 BUILT AFTER 1/15/07 2007 RANGER 700 4x4 BUILT BEFORE 1/15/07 2007 RZR 800 2008-2009 RZR 800 Built 1/01/10 and after 2010 RZR 800 Built 12/31/09 and Before 2010 SPORTSMAN 700 TWIN EFI 4x4 2005-2007 SPORTSMAN 700 X2 TWIN EFI 2008 SPORTSMAN 800 EFI 2005-2013 SPORTSMAN 800 EFI 6x6 2009-2013 SPORTSMAN 800 EFI built 1/31/08 and before 2008 SPORTSMAN 800 EFI built 2/31/08 and after 2008