GENUINE MIKUNI Mikuni BN40I Carb Carburetor Sea Doo 717 720 GS GTI GTS Sportster Challenger New genuine mikuni replacement carb, Replaces Seadoo OE# 270500328 Low Speed Jet: 70 / High Speed Jet: 167.5 / Needle Valve: 1.5 Proper tuning required upon install Exact item pictured FITS:SEA-DOO SP 1997 / GS 1997-2001 / GTS 1997-2002 / GTI / GTI LE 1998-2005 / SPORTSTER 1998 / CHALLENGER 1998