BOLD MAGENTA part numbers are new for 2025 FUEL/AIR SYSTEMS PARTS-UNLIMITED.COM SNOW | 2025 FUEL/AIR SYSTEMS 639 UNIVERSAL CLAMP-ON AIR FILTERS •Round straight-type air filters with rubber end caps • Clamp directly to the carburetor throat, replacing the stock airbox and filter element •Pleated design increases airflow for optimal performance •Match the OD of your carb throat with the ID of the filter FILTER BASE LENGTH FLANGE POSITION PART # 2 1/4” ID MOUNTING FLANGE 3 1/2” 4” Centered RU-60 3 1/2” 5” Angled 20° RU-1711 2 7/16” ID MOUNTING FLANGE 3 1/2” 4” Centered RU-80 FILTER BASE LENGTH FLANGE POSITION PART # 2 7/16” ID MOUNTING FLANGE (CONT) 3 3/4” 5” Angled 20°/1” lg. RU-176 3 3/4” 6” Angled 20°/1” lg. RU-177 1 Fits Precharger PART #RU-0510PK. UNIVERSAL PRECHARGER •Extends service period by prefiltering tiny contaminants in dusty conditions •Highly-durable polyester material wraps around K&N filters •Designed to be run dry and cleaned with K&N filter cleaner •Universal size and available in black DIMENSIONS PART # 3 1/2” OD x 5” H RU-0510PK SNOWMOBILE POD FILTERS •Durable urethane mounting base for longer life and a better fit •Black coarse foam for maximum filtration •Available in straight style or angled 15° for an easier fit •Seamless design for maximum airflow •Not intended for use on dirt bikes or ATVs STRAIGHT ID OD LENGTH OF FOAM PART # 1 3/4” 2 3/4” 4” 1011-1325 2 1/2” 3” 4” 1011-1326 2 1/4” 3 1/4” 6” 1011-1327 2 1/2” 3 1/4” 6” 1011-1328 2 3/4” 4” 6” UP-6275S 3” 4” 6” UP-6300S ANGLED ID OD LENGTH OF FOAM PART # 2 1/4” 3 1/4” 4” 1011-1329 2 1/2” 4” 4” 1011-1330 2 1/4” 4” 6” 1011-1331 2 1/2” 4” 6” 1011-1332 2 3/4” 4” 6” UP-6275SA FILTERED AIR VENTS •Foam filtered air vents increase the pre-filtered air supply to the airbox •May be cleaned and reoiled •Sold in packs of six • 1” diameter DESCRIPTION PART # Filtered air vents UFV-6 DESCRIPTION PART # Pre-filter foam (single layer) BF-2 PRE-FILTER FOAM •Single layer of thick, coarse foam measures 12” x 24” x 3/8” thick; trim to fit •Use to cover the airbox opening or as the outer layer of a two-layer filter •Can be cleaned and reused 1011-1332 1011-1325 RU-80 RU-171
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