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  • Designed to Fit in the Factory Air Box Exactly Like Original Filter
  • The Best Selling Replacement Air Filter for Competition Motorcycles and ATVs
  • Unique Two Stage Design Allows for Easy and Complete Cleaning
  • Dual Layer of Foam, Can Be Serviced Separately
  • Thin Ultra Seal Base Is Virtually Impossible to Tear and Has a Built-In \"Grease Groove\"


    • Fits the Following Arctic Cat Models:
  • 650 H1 2005-2007, 2010-2011
  • 650 TWIN 2004-2006
  • PROWLER 650 H1 2006-2007
  • TBX 400 2005-2011
  • TBX 500 2005-2009
  • TRV 400 2005-2011
  • TRV 500 AUTO 2006


    • Please Note: The Image Displayed Is Representative of UNI Filters, but Shows a Variety of Styles. You Will Only Receive the Proper Filter Described for Your Application, Regardless of Image Shown.", "Uni Multi-Stage Competition Air Filter NU-8603ST", "Unsurpassed in airflow, dirt stopping and overall performance
    Fits in stock air box exactly like OEM filter
    Traps dirt and dust in 2 layers of foam
    The large pore, pre-filter captures the bigger particles
    The small pore, inner filter prevents any engine-wrecking grit from reaching the cylinder
    Features the Ultra Seal grease groove on the sealing surface
    Made in the U.S.A" ], "Product_grade": [ "Performance Part", "Replacement Part" ], "Product_site_launch_date": [ "2007-01-30T17:18:00-00:00", "2007-09-28T19:48:56-00:00", "2009-11-09T00:00:00-00:00", "2012-09-18T19:40:09.247Z", "2015-11-09T18:36:29.908Z", "2016-04-13T22:16:00.246Z", "2016-11-18T08:00:00.000Z" ], "Publisher": [ "UNI", "Uni Filter" ], "Rank": [ "1120772", "1136707", "1204", "12399", "1566751", "1696", "1735554", "1776727", "1882516", "27826", "2807", "3218787", "3639", "3680", "439204", "4809", "4926", "5133", "520164", "5346", "5559406", "954269" ], "Registration_status": [ "fifra_not_considered_pesticide" ], "Regulatory_organization_name": [ "California Environmental Protection Agency - Air Resources Board(CARB)" ], "Size": [ "Fitment" ], "StrippedMpns": [ "LNOCPNU8603ST0", "NU8603ST" ], "Studio": [ "UNI", "Uni Filter" ], "Supplier_declared_dg_hz_regulation": [ "not_applicable" ], "Title": [ "2006-2007 ARCTIC CAT 650 PROWLER H1 UNI AIR FILTER ARCTIC CAT ATV, 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"PT01" ], "Warranty": [ "Manufacturer" ], "Warranty_description": [ "Manufacturer" ], "WebsiteDisplayGroup": [ "automotive_display_on_website" ], "WebsiteDisplayGroupName": [ "Automotive Parts and Accessories" ], "Weight": [ "0.000625", "0.1", "0.10", "0.11", "0.25", "0.38", "1.0", "1.00", "1.95", "6.75" ], "Width": [ "1000", "1050", "1106", "1600", "1701", "1800", "347", "4.5", "4.50", "5", "5.0", "5.00", "500", "52", "732", "75", "8.42", "9.0", "9.00" ] }, "images": [], "distributors": [ { "name": "21motorsports.com", "sku": "NU-8603ST", "url": "https://21motorsports.com/uni-filter-uni-air-filter-arctic-cat-atv-p-n-nu-8603st/", "pricing": [], "stock": { "available": false, "quantity": null, "lead_time_days": null }, "moq": 1, "multiple": 1 }, { "name": "goturbo.net", "sku": "UNINU-8603ST", "url": "https://goturbo.net/uninu-8603st-uni-filter-uni-atv-air-filter-nu-8603st", "pricing": [ { "quantity": 1, "price_usd": 23.21 } ], "stock": { "available": false, "quantity": null, 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"uni", "image": "", "url": "https://www.amazon.com/dp/B000WJJ758?tag=atariguidz-20", "description": "Unsurpassed in airflow, dirt stopping and overall performance
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    Traps dirt and dust in 2 layers of foam
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    The small pore, inner filter prevents any engine-wrecking grit from reaching the cylinder
    Features the Ultra Seal grease groove on the sealing surface
    Made in the U.S.A", "features": [ "New" ] }, { "asin": "B005WXMUCG", "title": "Uni Filter NU-8603ST UNI ATV AIR FILTER", "brand": "UNI FILTER", "image": "https://m.media-amazon.com/images/I/41K7ceRFOVL._SL75_.jpg", "url": "https://www.amazon.com/dp/B005WXMUCG?tag=atariguidz-20", "description": "Unsurpassed in airflow, dirt stopping and overall performance
    Fits in stock air box exactly like OEM filter
    Traps dirt and dust in 2 layers of foam
    The large pore, pre-filter captures the bigger particles
    The small pore, inner filter prevents any engine-wrecking grit from reaching the cylinder
    Features the Ultra Seal grease groove on the sealing surface
    Made in the U.S.A", "features": [ "ATV Utility ATV > FUEL & AIR > Air Filters > Multi-Stage Competition Air Filter", "Application: MULTIPLE ARCCAT, SEE COMMENTS/TABLE", "Uni Filter Multi-Stage Competition Air Filter NU-8603ST." ] }, { "asin": "B008Y3S2H8", "title": "2006-2007 ARCTIC CAT 650 PROWLER H1 UNI AIR FILTER ARCTIC CAT ATV, Manufacturer: UNI FILTER, Manufacturer Part Number: NU-8603ST-AD, Condition: New, Stock Photo - Actual parts may vary.", "brand": "Uni Filter", "image": "https://m.media-amazon.com/images/I/41K7ceRFOVL._SL75_.jpg", "url": "https://www.amazon.com/dp/B008Y3S2H8?tag=atariguidz-20", "description": "Unsurpassed in airflow, dirt stopping and overall performance
    Fits in stock air box exactly like OEM filter
    Traps dirt and dust in 2 layers of foam
    The large pore, pre-filter captures the bigger particles
    The small pore, inner filter prevents any engine-wrecking grit from reaching the cylinder
    Features the Ultra Seal grease groove on the sealing surface
    Made in the U.S.A" }, { "asin": "B00AWRUZ0Q", "title": "Uni Filter Two-Stage Competition Air Filter", "brand": "Uni Filter", "image": "https://m.media-amazon.com/images/I/51uGj+AOVOL._SL75_.jpg", "url": "http://www.amazon.com/gp/offer-listing/B00AWRUZ0Q%3FSubscriptionId%3DAKIAIHZ4E5VH567UHIVA%26tag%3Dmgo-123%26linkCode%3Dxm2%26camp%3D2025%26creative%3D386001%26creativeASIN%3DB00AWRUZ0Q", "description": "
  • Designed to Fit in the Factory Air Box Exactly Like Original Filter
  • The Best Selling Replacement Air Filter for Competition Motorcycles and ATVs
  • Unique Two Stage Design Allows for Easy and Complete Cleaning
  • Dual Layer of Foam, Can Be Serviced Separately
  • Thin Ultra Seal Base Is Virtually Impossible to Tear and Has a Built-In \"Grease Groove\"


    • Fits the Following Arctic Cat Models:
  • 650 H1 2005-2007, 2010-2011
  • 650 TWIN 2004-2006
  • PROWLER 650 H1 2006-2007
  • TBX 400 2005-2011
  • TBX 500 2005-2009
  • TRV 400 2005-2011
  • TRV 500 AUTO 2006


    • Please Note: The Image Displayed Is Representative of UNI Filters, but Shows a Variety of Styles. You Will Only Receive the Proper Filter Described for Your Application, Regardless of Image Shown." }, { "asin": "B00JXOVKR6", "title": "Uni Multi-Stage Competition Air Filter NU-8603ST", "brand": "Uni Filter", "image": "", "url": "https://www.amazon.com/dp/B00JXOVKR6?tag=atariguidz-20", "description": "Uni Multi-Stage Competition Air Filter NU-8603ST", "features": [ "Uni Multi-Stage Competition Air Filter NU-8603ST" ] }, { "asin": "B07647CMWZ", "title": "Orange Cycle Parts Air Filter for Arctic Cat 400 500 650 ATV by Uni Filter NU-8603ST", "brand": "UNI FILTER", "image": "https://m.media-amazon.com/images/I/4135O5SZeBL._SL75_.jpg", "url": "https://www.amazon.com/dp/B07647CMWZ?tag=atariguidz-20" } ] }, "metadata": { "generated_date": "2025-12-07", "last_updated": "2025-12-07", "data_sources": [ "21motorsports.com", "allterraindepot.com", "denniskirk.com", "goturbo.net", "motomentum.com", "motoroso.com", "rcagarage.com", "socalpowersports.com", "vividracing.com", "Amazon" ], "completeness": 1.0, "version": "1.0" } } }