K&N Engineering Part KN-621 Premium Oil Filter for Arctic Cat Powersports Vehicles

K&N premium oil filters for powersports vehicles utilize an innovative, highly efficient synthetic-blend filtration media designed to be compatible with synthetic, petroleum-based, and blended oils, including the high concentrations of synthetic racing oils. The heavy-duty canister is engineered to be exceptionally durable, and a 17mm welded hex nut can be used for quick and easy filter removal. Engineered to support exceptionally high flow rates while providing outstanding protection from harmful engine contaminants, each filter is specifically designed to withstand the service intervals recommended by vehicle manufacturers, and is protected by the K&N 1-Year Limited Warranty. K&N Wrench-Off oil filters are engineered to help ensure high flow rates and exceptional protection from contaminants. Each powersports filter comes with a 17mm hex nut welded to the top of the canister, allowing for easy removal.

• 1-Year Limited Warranty

The K&N Engineering KN-621 premium oil filter is designed to deliver superior engine protection for Arctic Cat powersports vehicles. Featuring an innovative synthetic-blend filtration media, this filter effectively captures harmful contaminants while supporting high flow rates essential for optimal engine performance. It is compatible with synthetic, petroleum-based, and blended oils—including high concentrations of synthetic racing oils—making it suitable for a wide range of riding conditions. The heavy-duty canister construction ensures durability and reliability during extended service intervals, while the welded 17mm hex nut allows for quick and effortless removal, reducing maintenance time. Built to withstand demanding environments, this filter is engineered to provide consistent protection and performance, backed by the K&N 1-Year Limited Warranty. Its robust design and high flow capacity make it an ideal choice for enthusiasts seeking reliable filtration for their Arctic Cat Thundercat, TRV Cruiser, or EFI H2 models. Whether for daily riding or racing applications, the KN-621 ensures your engine remains free of dirt, debris, and other contaminants, helping to extend engine life and maintain peak performance.

Features:

• Synthetic-blend filtration media compatible with various oil types including synthetic and blended oils

• Heavy-duty canister for enhanced durability and longevity

• Welded 17mm hex nut for quick and easy filter removal

• Supports high flow rates to maintain engine efficiency

• Engineered to meet vehicle manufacturer service intervals

• Protected by the K&N 1-Year Limited Warranty

Fits
Arctic Cat 1000 EFI H2 4x4 Auto TRV Base 2010
Arctic Cat 1000 EFI H2 4x4 Auto TRV Base 2011
Arctic Cat 1000 TRV Cruiser Base 2009
Arctic Cat 1000 TRV Cruiser Base 2010
Arctic Cat 1000 TRV Cruiser Base 2011
Arctic Cat 1000 XT Base 2013
Arctic Cat 1000 XT Base 2014
Arctic Cat 1000 XT Base 2015
Arctic Cat 1000 XT Base 2016
Arctic Cat 1000 XT Base 2017
Arctic Cat 1000i GT Base 2012
Arctic Cat 350 Base 2011
Arctic Cat 350 Base 2012
Arctic Cat 366 4X4 Auto Base 2008
Arctic Cat 366 4X4 Auto Base 2009
Arctic Cat 366 4x4 Auto SE Base 2010
Arctic Cat 366 4x4 Auto SE Base 2011
Arctic Cat 400 Base 2015
Arctic Cat 425 Base 2011
Arctic Cat 425i Base 2012
Arctic Cat 425i Se Base 2012
Arctic Cat 450 Base 2011
Arctic Cat 450 Base 2015
Arctic Cat 450 Core Base 2013
Arctic Cat 450 EFI H1 4x4 Auto Base 2010
Arctic Cat 450 LTD Base 2011
Arctic Cat 450 TRV Base 2011
Arctic Cat 450i Base 2012
Arctic Cat 500 Base 2014
Arctic Cat 500 Base 2015
Arctic Cat 500 Base 2016
Arctic Cat 500 4X4 Base 2009
Arctic Cat 500 4X4 Auto Base 2008
Arctic Cat 500 4X4 Auto Base 2009
Arctic Cat 500 4X4 Auto M4 Base 2008
Arctic Cat 500 4X4 Auto Trv Base 2008
Arctic Cat 500 Core Base 2013
Arctic Cat 500 Xt Base 2013
Arctic Cat 550 Base 2012
Arctic Cat 550 Base 2014
Arctic Cat 550 4x4 Auto Base 2010
Arctic Cat 550 4x4 Auto Base 2011
Arctic Cat 550 4x4 Auto LE Base 2010
Arctic Cat 550 4x4 Auto TRV Base 2009
Arctic Cat 550 4x4 Auto TRV Base 2010
Arctic Cat 550 4x4 Auto TRV Base 2011
Arctic Cat 550 4X4 Auto Trv Le Base 2009
Arctic Cat 550 Core Base 2013
Arctic Cat 550 H1 EFI Base 2009
Arctic Cat 550 Ltd Base 2011
Arctic Cat 550 Ltd Base 2014
Arctic Cat 550 S Base 2011
Arctic Cat 550 TRV Cruiser Base 2011
Arctic Cat 550 TRV GT Base 2011
Arctic Cat 550 TRV S GT Base 2010
Arctic Cat 550 Xt Base 2013
Arctic Cat 550 Xt Base 2014
Arctic Cat 550i Gt Base 2012
Arctic Cat 550i Ltd Base 2012
Arctic Cat 550i Ltd Base 2013
Arctic Cat 650 H1 4x4 Auto Base 2006
Arctic Cat 650 H1 4x4 Auto Base 2007
Arctic Cat 650 H1 4x4 Auto Base 2008
Arctic Cat 650 H1 4x4 Auto Base 2010
Arctic Cat 650 H1 4x4 Auto Base 2011
Arctic Cat 650 H1 4x4 Auto LE Base 2007
Arctic Cat 650 H1 4x4 Auto Mud Pro Base 2010
Arctic Cat 650 H1 4x4 Auto Mud Pro Base 2011
Arctic Cat 650 H1 4x4 Auto SE Base 2006
Arctic Cat 650 H1 4x4 Auto TBX Base 2007
Arctic Cat 650 H1 4x4 Auto TRV Base 2008
Arctic Cat 650 H1 4x4 Auto TRV Base 2009
Arctic Cat 650 H1 4x4 Auto TRV Plus Base 2007
Arctic Cat 650 H1 4X4 Auto Trv Plus Le Base 2007
Arctic Cat 700 Base 2011
Arctic Cat 700 Base 2014
Arctic Cat 700 Core Base 2013
Arctic Cat 700 EFI 4x4 Auto Base 2007
Arctic Cat 700 EFI 4x4 Auto Base 2008
Arctic Cat 700 EFI 4x4 Auto LE Base 2007
Arctic Cat 700 EFI 4x4 Auto M4 Base 2008
Arctic Cat 700 EFI 4x4 Auto TRV Cruiser Base 2008
Arctic Cat 700 EFI 4x4 Auto TRV Cruiser Base 2009
Arctic Cat 700 EFI 4x4 Auto TRV Cruiser Base 2010
Arctic Cat 700 EFI 4x4 Auto TRV Cruiser Base 2011
Arctic Cat 700 EFI 4x4 Auto TRV LE Base 2008
Arctic Cat 700 EFI H1 4x4 Auto Base 2009
Arctic Cat 700 EFI H1 4x4 Auto Base 2010
Arctic Cat 700 EFI H1 4x4 Auto LE Base 2009
Arctic Cat 700 EFI H1 4x4 Auto LE Base 2010
Arctic Cat 700 EFI H1 4x4 Auto Mud Pro Base 2009
Arctic Cat 700 EFI H1 4x4 Auto Mud Pro Base 2010
Arctic Cat 700 EFI H1 4x4 Auto Mud Pro Base 2011
Arctic Cat 700 EFI H1 4x4 Auto SE Base 2008
Arctic Cat 700 EFI H1 4x4 Auto SE Base 2009
Arctic Cat 700 EFI H1 4x4 Auto TBX Base 2010
Arctic Cat 700 EFI H1 4x4 Auto TRV Base 2009
Arctic Cat 700 EFI H1 4x4 Auto TRV Base 2010
Arctic Cat 700 EFI H1 4x4 Auto TRV Base 2011
Arctic Cat 700 Ltd Base 2011
Arctic Cat 700 Ltd Base 2014
Arctic Cat 700 S Base 2010
Arctic Cat 700 S Base 2011
Arctic Cat 700 TRV GT Base 2010
Arctic Cat 700 TRV GT Base 2011
Arctic Cat 700 Xt Base 2013
Arctic Cat 700 Xt Base 2014
Arctic Cat 700i Base 2012
Arctic Cat 700i Gt Base 2012
Arctic Cat 700i Ltd Base 2012
Arctic Cat 700i Ltd Base 2013
Arctic Cat Alterra 300 Base 2020
Arctic Cat Alterra 300 Base 2021
Arctic Cat Alterra 300 Base 2022
Arctic Cat Alterra 300 Base 2023
Arctic Cat Alterra 300 Base 2024
Arctic Cat Alterra 400 Base 2016
Arctic Cat Alterra 400 Base 2017
Arctic Cat Alterra 450 Base 2016
Arctic Cat Alterra 500 Base 2017
Arctic Cat Alterra 500 XT Base 2016
Arctic Cat Alterra 570 Base 2020
Arctic Cat Alterra 570 EPS Base 2020
Arctic Cat Alterra 600 Black Hills Edition Base 2023
Arctic Cat Alterra 600 Black Hills Edition Base 2024
Arctic Cat Alterra 600 EPS Base 2022
Arctic Cat Alterra 600 EPS Base 2023
Arctic Cat Alterra 600 EPS Base 2024
Arctic Cat Alterra 600 LTD Base 2022
Arctic Cat Alterra 600 LTD Base 2023
Arctic Cat Alterra 600 LTD Base 2024
Arctic Cat Alterra 600 Mud Pro Base 2023
Arctic Cat Alterra 600 Mud Pro Base 2024
Arctic Cat Alterra 600 SE Base 2022
Arctic Cat Alterra 600 SE Base 2023
Arctic Cat Alterra 600 TRV EPS Base 2023
Arctic Cat Alterra 600 TRV EPS Base 2024
Arctic Cat Alterra 600 TRV XT Base 2023
Arctic Cat Alterra 600 TRV XT Base 2024
Arctic Cat Alterra 600 XT Base 2022
Arctic Cat Alterra 600 XT Base 2023
Arctic Cat Alterra 600 XT Base 2024
Arctic Cat Alterra 700 Base 2017
Arctic Cat Alterra 700 Base 2020
Arctic Cat Alterra 700 EPS SE Base 2021
Arctic Cat Alterra 700 XT Base 2017
Arctic Cat Alterra TBX 700 Base 2020
Arctic Cat Alterra TRV 1000 XT Base 2017
Arctic Cat Alterra TRV 550 XT Base 2017
Arctic Cat Alterra TRV 700 Base 2020
Arctic Cat Alterra TRV 700 XT Base 2017
Arctic Cat Bearcat 2000 LT ES Base 2017
Arctic Cat Bearcat 2000 XT ES Base 2017
Arctic Cat Bearcat 3000 LT Base 2016
Arctic Cat Bearcat 3000 LT Base 2017
Arctic Cat HDX 500 XT Base 2017
Arctic Cat HDX 700 CREW XT Base 2017
Arctic Cat HDX 700 XT Base 2017
Arctic Cat Lynx 2000 ES Base 2017
Arctic Cat Lynx 2000 LT ES Base 2017
Arctic Cat M 6000 SE ES 141 Base 2017
Arctic Cat M 6000 SE ES 153 Base 2017
Arctic Cat M 6000 Sno Pro 153 Base 2017
Arctic Cat M 6000 Sno Pro ES 153 Base 2017
Arctic Cat M 8000 HCR 153 Base 2017
Arctic Cat M 8000 Limited 153 Base 2017
Arctic Cat M 8000 Limited 162 Base 2017
Arctic Cat M 8000 Limited ES 153 Base 2017
Arctic Cat M 8000 Limited ES 162 Base 2017
Arctic Cat M 8000 Mountain Cat 153 Base 2017
Arctic Cat M 8000 Mountain Cat 162 Base 2017
Arctic Cat M 8000 Mountain Cat ES 153 Base 2017
Arctic Cat M 8000 Mountain Cat ES 162 Base 2017
Arctic Cat M 8000 SE ES 153 Base 2017
Arctic Cat M 8000 SE ES 162 Base 2017
Arctic Cat M 8000 Sno Pro 153 Base 2017
Arctic Cat M 8000 Sno Pro 162 Base 2017
Arctic Cat M 8000 Sno Pro ES 141 Base 2017
Arctic Cat M 8000 Sno Pro ES 153 Base 2017
Arctic Cat M 8000 Sno Pro ES 162 Base 2017
Arctic Cat MudPro 1000 LTD Base 2012
Arctic Cat MudPro 1000 LTD Base 2013
Arctic Cat MudPro 1000 LTD Base 2014
Arctic Cat MudPro 1000 LTD Base 2015
Arctic Cat MudPro 1000 LTD Base 2017
Arctic Cat MudPro 1000 SE Base 2016
Arctic Cat MudPro 700 Base 2011
Arctic Cat MudPro 700 LTD Base 2012
Arctic Cat MudPro 700 LTD Base 2013
Arctic Cat MudPro 700 LTD Base 2014
Arctic Cat MudPro 700 LTD Base 2015
Arctic Cat MudPro 700 LTD Base 2016
Arctic Cat MudPro 700 LTD Base 2017
Arctic Cat MudPro 700i Base 2012
Arctic Cat Pantera 3000 Base 2016
Arctic Cat Pantera 3000 Base 2017
Arctic Cat Prowler 500 Base 2017
Arctic Cat Prowler 500 Base 2020
Arctic Cat Prowler 500 Base 2021
Arctic Cat Prowler 500 Base 2022
Arctic Cat Prowler 550 Base 2009
Arctic Cat Prowler 650 4x4 Auto Base 2008
Arctic Cat Prowler 650 H1 Base 2007
Arctic Cat Prowler HDX 500 Base 2015
Arctic Cat Prowler HDX 700 Base 2011
Arctic Cat Prowler HDX 700 Limited Base 2014
Arctic Cat Prowler HDX 700 XT Base 2015
Arctic Cat Prowler HDX 700i Base 2012
Arctic Cat Prowler HDX 700i Base 2013
Arctic Cat Prowler XT 1000 Base 2017
Arctic Cat Prowler XT 550 Base 2010
Arctic Cat Prowler XT 550 Base 2011
Arctic Cat Prowler XT 550i Base 2012
Arctic Cat Prowler XT 550i Base 2013
Arctic Cat Prowler XT 650 4x4 Auto Base 2008
Arctic Cat Prowler XT 650 4x4 Auto M4 Base 2008
Arctic Cat Prowler XT 650 H1 Base 2006
Arctic Cat Prowler XT 650 H1 Base 2007
Arctic Cat Prowler XT 650 H1 Base 2009
Arctic Cat Prowler XT 700 Base 2009
Arctic Cat Prowler XT 700 Base 2015
Arctic Cat Prowler XT 700 Base 2016
Arctic Cat Prowler XT 700 Base 2017
Arctic Cat Prowler XTX 700 Base 2010
Arctic Cat Prowler XTX 700 Base 2011
Arctic Cat Prowler XTX 700 Base 2014
Arctic Cat Prowler XTX 700 H1 EFI Base 2009
Arctic Cat Prowler XTX 700 H1 EFI Base 2010
Arctic Cat Prowler XTX 700 H1 EFI Base 2011
Arctic Cat Prowler XTX 700 LE Base 2009
Arctic Cat Prowler XTX 700i Base 2012
Arctic Cat Prowler XTX 700i Base 2013
Arctic Cat Prowler XTZ 1000 Base 2010
Arctic Cat Prowler XTZ 1000 Base 2011
Arctic Cat Prowler XTZ 1000 Baja Base 2009
Arctic Cat Prowler XTZ 1000 H2 EFI Base 2009
Arctic Cat Prowler XTZ 1000 H2 EFI Base 2010
Arctic Cat Prowler XTZ 1000 H2 EFI Base 2011
Arctic Cat Prowler XTZ 1000i Base 2012
Arctic Cat Prowler XTZ 1000i Base 2013
Arctic Cat TBX 700 Base 2015
Arctic Cat TBX 700 Base 2017
Arctic Cat Thundercat 1000 4x4 Auto Base 2008
Arctic Cat Thundercat 1000 4x4 Auto Base 2009
Arctic Cat Thundercat 1000 4x4 Auto Base 2010
Arctic Cat Thundercat 1000 4x4 Auto LE Base 2010
Arctic Cat TRV 1000 LTD Base 2013
Arctic Cat TRV 1000 LTD Base 2014
Arctic Cat TRV 1000 LTD Base 2015
Arctic Cat TRV 1000 XT Base 2015
Arctic Cat TRV 1000i Cruiser Base 2012
Arctic Cat TRV 1000i GT Base 2012
Arctic Cat TRV 400 Core Base 2013
Arctic Cat TRV 450i Base 2012
Arctic Cat TRV 500 Base 2014
Arctic Cat TRV 500 Base 2015
Arctic Cat TRV 500 Core Base 2013
Arctic Cat TRV 550 LTD Base 2013
Arctic Cat TRV 550 LTD Base 2014
Arctic Cat TRV 550 LTD Base 2015
Arctic Cat TRV 550 XT Base 2013
Arctic Cat TRV 550 XT Base 2014
Arctic Cat TRV 550 XT Base 2015
Arctic Cat TRV 550i Crusier Base 2012
Arctic Cat TRV 550i GT Base 2012
Arctic Cat TRV 700 LTD Base 2013
Arctic Cat TRV 700 LTD Base 2014
Arctic Cat TRV 700 LTD Base 2015
Arctic Cat TRV 700i Cruiser Base 2012
Arctic Cat TRV 700i GT Base 2012
Arctic Cat Wildcat 1000 Base 2013
Arctic Cat Wildcat 1000 Base 2014
Arctic Cat Wildcat 1000 Base 2015
Arctic Cat Wildcat 1000 Ltd Base 2013
Arctic Cat Wildcat 1000 Ltd Base 2014
Arctic Cat Wildcat 4 1000 Base 2013
Arctic Cat Wildcat 4 1000 Base 2014
Arctic Cat Wildcat 4 Limited Base 2014
Arctic Cat Wildcat 4X Base 2014
Arctic Cat Wildcat 4X Base 2015
Arctic Cat Wildcat 4X Base 2016
Arctic Cat Wildcat 4X Base 2017
Arctic Cat Wildcat 4X Limited Base 2014
Arctic Cat Wildcat 4X Limited Base 2015
Arctic Cat Wildcat Sport Base 2015
Arctic Cat Wildcat Sport Base 2016
Arctic Cat Wildcat Sport Limited Base 2015
Arctic Cat Wildcat Sport Limited Base 2016
Arctic Cat Wildcat Sport Limited Base 2017
Arctic Cat Wildcat Sport SE Base 2017
Arctic Cat Wildcat Sport XT Base 2015
Arctic Cat Wildcat Sport XT Base 2016
Arctic Cat Wildcat Sport XT Base 2017
Arctic Cat Wildcat Trail Base 2015
Arctic Cat Wildcat Trail Base 2016
Arctic Cat Wildcat Trail Base 2017
Arctic Cat Wildcat Trail Limited Base 2015
Arctic Cat Wildcat Trail Limited Base 2016
Arctic Cat Wildcat Trail Limited Base 2017
Arctic Cat Wildcat Trail Ltd Base 2020
Arctic Cat Wildcat Trail SE Base 2016
Arctic Cat Wildcat Trail SE Base 2017
Arctic Cat Wildcat Trail XT Base 2015
Arctic Cat Wildcat Trail XT Base 2016
Arctic Cat Wildcat Trail XT Base 2017
Arctic Cat Wildcat Trail XT Base 2020
Arctic Cat Wildcat X Base 2016
Arctic Cat Wildcat X Base 2017
Arctic Cat Wildcat X 1000 Base 2013
Arctic Cat Wildcat X 1000 Base 2014
Arctic Cat Wildcat X 1000 Base 2015
Arctic Cat Wildcat X Limited Base 2014
Arctic Cat Wildcat X Limited Base 2015
Arctic Cat Wildcat X Limited Base 2016
Arctic Cat Wildcat X Limited Base 2017
Arctic Cat Wildcat X SE Base 2016
Arctic Cat XC 450 Base 2015
Arctic Cat XC 450 Base 2016
Arctic Cat XC 450 Base 2017
Arctic Cat XC 450i Base 2011
Arctic Cat XC 450i Base 2012
Arctic Cat XC 450i Base 2013
Arctic Cat XC 450i Base 2014
Arctic Cat XR 500 Base 2015
Arctic Cat XR 550 Base 2015
Arctic Cat XR 550 LTD Base 2015
Arctic Cat XR 550 XT Base 2015
Arctic Cat XR 700 Base 2015
Arctic Cat XR 700 LTD Base 2015
Arctic Cat XR 700 XT Base 2015
Arctic Cat ZR 3000 LXR Base 2017