The replacement oxygen sensor is made for select 1999-2015 Buell, Polaris and Victory applications. It signals exhaust oxygen content to the engine computer so it can adjust the air-fuel mixture.

Walker Products 932-11001 Oxygen Sensor Features:

• Fits 1999-2002 Buell X1 Lightning; 2000-2002 Buell M2 Cyclone, S3T Thunderbolt; 2000-2001 Buell S3 Thunderbolt
• Fits 2002 Buell M2L Cyclone, X1W White Lightning, Polaris Frontier; 2002-2007 Buell XB9R Firebolt; 2003-2004 Buell XB9S Lightning, Polaris Frontier Classic
• Also fits select Buell, Polaris and Victory applications
• Used in rear and front positions, depending on application