Pilot Jet #40, Part 3130067 is a specific part that goes into the carburetor that helps control the amount of fuel when idling. It's a genuine OEM part that is tested by Polaris engineers through extensive lab and field tests to ensure durability and high quality performance ultimately giving you the best riding experience possible. It meets ASTM, D2000 regulations and is chemical and environmental resistant letting you ride longer and harder. We've been a leader in the snowmobile industry for nearly 70 years, don't settle for anything less than OEM quality. This Accessory is Designed to Fit the Following: Snowmobiles , 2007 600 HO IQ , 2006 Trail Touring Deluxe , 2006 Trail Touring , 2006 550 Classic , 2006 500 Classic , 2005-2006, 2002-2003, 1989-1991 INDY 500 , 2005, 1998 TRAIL Touring , 2005 TRAIL Touring DELUXE , 2004-2006 SUPER SPORT , 2004-2005, 2001-2002, 1995-1997 500 CLASSIC , 2004-2005 700 XC SP , 2004 TRAIL EDGE Touring , 2004 SPORT EDGE Touring , 2004 POLARIS 500 INDY , 2004 800 PRO X 2 , 2004 800 CLASSIC , 2004 700 PRO X 2 , 2004 700 CLASSIC , 2004 600 PRO X 2 , 2004 550 PRO X , 2003-2005 800 XC SP , 2003-2005 550 CLASSIC , 2003-2004 800 PRO X , 2003-2004 700 PRO X , 2003-2004 600 PRO X , 2003 SUPER SPORT M-10 , 2003 SUPER SPORT Edge X , 2003 800 XC SP M-10 , 2003 800 XC SP Edge X M-10 , 2003 800 XC SP Edge X , 2003 800 SKS , 2003 700 SKS , 2003 500 CLASSIC Touring , 2003 , 2002-2003 440 PRO X FAN , 2002, 2000 500 XC SP , 2002 600 XC SP M-10 , 2002 600 XC SP F/O , 2002 600 CLASSIC , 2002 500 XC SP M-10 , 2001-2003 500 XC , 2001, 1995-1997 500 , 2001 600 RMK , 2001 600 CLASSIC Touring , 2001 500 XC SP Red , 2001 500 XC SP Blue , 2001 500 XC SP Black , 2000-2002 600 XC SP , 2000 SPORT , 2000 600 XC SP EDGE , 2000 600 Touring , 1999, 1987 TRAIL , 1999 XLT Touring Gold , 1999 XLT CLASSIC , 1999 XCF , 1999 TRAIL Touring Green , 1999 TRAIL Green , 1998-1999 XLT Touring , 1998 XLT LTD , 1997-1998 ULTRA Touring , 1997-1998 ULTRA , 1997-1998 600 XCR