K&N High Flow Air Filter for Harley Davidson Road King/ Road Glide/ Street Glide - HD-1508
K&N High Flow Air Filter for Harley Davidson Road King/ Road Glide/ Street Glide - HD-1508
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K&N High-Flow Air Filter | Harley-Davidson Touring 96ci & 103ci (HD-1508)
The HD-1508 is the high-performance intake solution for the early-to-mid 2000s Touring generation. Specifically designed for the 2008–2013 Harley-Davidson Road Glide, Street Glide, Road King, and Electra Glide, this filter is engineered to provide the massive air volume needed by the Twin Cam 96 and 103 engines during long-distance hauls.
Key Features
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Touring Engine Optimization: Designed to provide up to 50% more airflow than the factory paper element. This is especially vital for Touring riders who need consistent power and throttle response when riding two-up or fully loaded with luggage.
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Superior Filtration: Features K&N’s signature multi-layered oiled cotton gauze media. It provides world-class engine protection (trapping 99% of contaminants) while maintaining high air velocity, even in dusty or wet road conditions.
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Washable & Reusable: A permanent "Lifetime" upgrade. Instead of replacing the filter every service, you simply wash, re-oil, and reinstall the HD-1508. It typically only requires cleaning every 80,000 km (50,000 miles) in normal street use.
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Direct Drop-In Fit: Precision-molded to ensure an airtight seal within the factory "ham-can" or football-style air cleaner housing. It is a direct "plug-and-play" replacement for Harley-Davidson OEM part number 29633-08.
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Improved Intake Growl: Unlocks a deeper, more resonant intake "thump" that adds a more authoritative sound to your V-Twin without being overly loud for long-distance touring.
Technical Specifications
| Feature | Specification |
| Model Code | HD-1508 |
| Brand | K&N |
| Filter Material | High-Flow Oiled Cotton Media |
| Compatibility | Touring Models (2008–2013) |
| Engines | 96ci (1584cc) & 103ci (1690cc) Twin Cam |
| Fits Specific Models | Road Glide, Street Glide, Road King, Electra Glide, Ultra Classic |
| Air Filter Shape | Unique (Touring Specific) |
| Warranty | 10-Year / Million Mile Limited Warranty |
Why Choose K&N for your 2008–2013 Touring Harley?
The 2008–2013 era marked the introduction of Throttle-By-Wire and larger displacement engines. However, the stock airboxes remained relatively restrictive to comply with global noise standards. The HD-1508 "uncorks" this bottleneck, resulting in sharper throttle response and a more linear torque delivery. For Touring riders, this means easier overtaking and better performance on mountain passes.
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2014 Harley Davidson FLTRX Road Glide Custom 103 CI All Models 2013 Harley Davidson FLHR Road King 103 CI All Models |
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2013 Harley Davidson FLHRC Road King Classic 103 CI All Models 2013 Harley Davidson FLHTC Electra Glide Classic 103 CI All Models |
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2013 Harley Davidson FLHTCU Ultra Classic Electra Glide 103 CI All Models 2013 Harley Davidson FLHTCUTG Tri Glide Ultra Classic 103 CI All Models |
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2013 Harley Davidson FLHTK Electra Glide Ultra Limited 103 CI All Models 2013 Harley Davidson FLHX Street Glide 103 CI All Models |
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2013 Harley Davidson FLTRU Road Glide Ultra 103 CI All Models 2013 Harley Davidson FLTRX Road Glide Custom 103 CI All Models |
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2012 Harley Davidson FLHP Road King Police 103 CI All Models 2012 Harley Davidson FLHR Road King 103 CI All Models |
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2012 Harley Davidson FLHRC Road King Classic 103 CI All Models 2012 Harley Davidson FLHTC Electra Glide Classic 103 CI All Models |
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2012 Harley Davidson FLHTCU Electra Glide Ultra Classic 103 CI All Models 2012 Harley Davidson FLHTCUTG Tri Glide Ultra Classic 103 CI All Models |
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2012 Harley Davidson FLHTK Electra Glide Ultra Limited 103 CI All Models 2012 Harley Davidson FLHTP Electra Glide Police 103 CI All Models |
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2012 Harley Davidson FLHX Street Glide 103 CI All Models 2012 Harley Davidson FLTRU Road Glide Ultra 103 CI All Models |
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2012 Harley Davidson FLTRX Road Glide Custom 103 CI All Models 2011 Harley Davidson FLHP Road King Police 103 CI All Models |
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2011 Harley Davidson FLHR Road King 96 CI All Models 2011 Harley Davidson FLHRC Road King Classic 103 CI All Models |
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2011 Harley Davidson FLHTC Electra Glide Classic 96 CI All Models 2011 Harley Davidson FLHTCU Ultra Classic Electra Glide 96 CI All Models |
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2011 Harley Davidson FLHTCUTG Tri Glide Ultra Classic 103 CI All Models 2011 Harley Davidson FLHTK Electra Glide Ultra Limited 103 CI All Models |
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2011 Harley Davidson FLHTP Electra Glide Police 103 CI All Models 2011 Harley Davidson FLHX Street Glide 96 CI All Models |
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2011 Harley Davidson FLHXXX Street Glide Trike 103 CI All Models 2011 Harley Davidson FLTR Road Glide 96 CI All Models |
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2011 Harley Davidson FLTRU Road Glide Ultra 103 CI All Models 2011 Harley Davidson FLTRX Road Glide Custom 96 CI All Models |
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2010 Harley Davidson FLHP Road King Police 103 CI All Models 2010 Harley Davidson FLHR Road King 96 CI All Models |
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2010 Harley Davidson FLHRC Road King Classic 96 CI All Models 2010 Harley Davidson FLHT Electra Glide Standard 96 CI All Models |
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2010 Harley Davidson FLHTC Electra Glide Classic 96 CI All Models 2010 Harley Davidson FLHTCU Ultra Classic Electra Glide 96 CI All Models |
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2010 Harley Davidson FLHTCUSE5 CVO Ultra Classic Electra Glide 110 CI All Models 2010 Harley Davidson FLHTCUTG Tri Glide Ultra Classic 103 CI All Models |
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2010 Harley Davidson FLHTK Electra Glide Ultra Limited 103 CI All Models 2010 Harley Davidson FLHTP Electra Glide Police 103 CI All Models |
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2010 Harley Davidson FLHX Street Glide 96 CI All Models 2010 Harley Davidson FLHXXX Street Glide Trike 103 CI All Models |
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2010 Harley Davidson FLTR Road Glide 96 CI All Models 2010 Harley Davidson FLTRX Road Glide Custom 96 CI All Models |
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2009 Harley Davidson FLHP Road King Police 103 CI All Models 2009 Harley Davidson FLHR Road King 96 CI All Models |
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2009 Harley Davidson FLHRC Road King Classic 96 CI All Models 2009 Harley Davidson FLHT Electra Glide Standard 96 CI All Models |
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2009 Harley Davidson FLHTC Electra Glide Classic 96 CI All Models 2009 Harley Davidson FLHTCU Ultra Classic Electra Glide 96 CI All Models |
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2009 Harley Davidson FLHTCUSE4 CVO Ultra Classic Electra Glide 110 CI All Models 2009 Harley Davidson FLHTCUTG Tri Glide Ultra Classic 103 CI All Models |
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2009 Harley Davidson FLHTP Electra Glide Police 103 CI All Models 2009 Harley Davidson FLHX Street Glide 96 CI All Models |
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2009 Harley Davidson FLTR Road Glide 96 CI All Models 2008 Harley Davidson FLHR Road King 96 CI All Models |
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2008 Harley Davidson FLHRC Road King Classic 96 CI All Models 2008 Harley Davidson FLHRSE4 Screamin Eagle Road King 110 CI All Models |
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2008 Harley Davidson FLHT Electra Glide Standard 96 CI All Models 2008 Harley Davidson FLHTC Electra Glide Classic 96 CI All Models |
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2008 Harley Davidson FLHTCU Ultra Classic Electra Glide 96 CI All Models 2008 Harley Davidson FLHTCUSE3 Screamin Eagle Ultra Classic Electra Gl 110 CI All Models |
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2008 Harley Davidson FLHX Street Glide 96 CI All Models 2008 Harley Davidson FLTR Road Glide 96 CI All Models |
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