{"product_id":"k-n-motorcycle-oil-filter-kn-173c-for-harley-dyna-fxb-high-flow-synthetic-media-welded-wrench-off-nut","title":"K\u0026N Motorcycle Oil Filter KN-173C for Harley Dyna\/FXB — High-Flow Synthetic Media \u0026 Welded Wrench-Off Nut","description":"\u003cstrong\u003eK\u0026amp;N KN-173C is a high-flow motorcycle oil filter with premium synthetic media and a welded wrench-off nut for faster oil changes and up to 20,000 miles of protection.\u003c\/strong\u003e\n\n\u003cp\u003eThis K\u0026amp;N Performance oil filter is built specifically for many Harley-Davidson Dyna and FXB models, combining durable construction with filtration designed for modern synthetic oils. It uses tightly packed, uniform pleated media to trap contaminants while preserving oil flow, and includes a welded nut so you can remove the filter quickly without extra tools. The KN-173C is lab-tested for capacity and burst strength and includes a model-specific bypass\/pressure relief valve to work reliably with high-end lubricants.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this filter protect my engine during long rides?\u003c\/h3\u003e\n\u003cp\u003eThe KN-173C uses premium synthetic filter media that balances efficiency and flow, capturing harmful particles while allowing oil to circulate freely. Higher capacity and consistent pleat geometry reduce the chance of clogging under heavy use, and the built-in bypass valve prevents oil starvation if flow is restricted.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePremium synthetic, high-efficiency media traps contaminants.\u003c\/li\u003e\n  \u003cli\u003eUniform pleats maintain steady oil flow under load.\u003c\/li\u003e\n  \u003cli\u003eHigh capacity lowers frequency of filter saturation on long trips.\u003c\/li\u003e\n  \u003cli\u003eIntegrated bypass\/pressure relief ensures oil delivery if clogged.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this fit my Harley-Davidson Dyna or FXB model?\u003c\/h3\u003e\n\u003cp\u003eKN-173C is made as a direct replacement for a range of Harley-Davidson Dyna and FXB model years. It is application-specific where required, so fitment aligns with factory dimensions and mounting points to simplify installation and ensure proper sealing.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible with many 1991–1998 Dyna models (Super Glide, Low Rider, Wide Glide, etc.).\u003c\/li\u003e\n  \u003cli\u003eAlso listed for select 1980–1982 FXB Sturgis models.\u003c\/li\u003e\n  \u003cli\u003eDesigned to match OEM thread and gasket specifications for a proper seal.\u003c\/li\u003e\n  \u003cli\u003eCheck your bike’s year and model against compatibility before purchasing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does the wrench-off nut change maintenance routines?\u003c\/h3\u003e\n\u003cp\u003eThe KN-173C’s welded nut is recessed into the filter endcap, allowing you to use a standard socket or wrench to remove the filter. That eliminates the need for strap wrenches or specialty tools and speeds up routine oil changes, especially out on the road or at quick service stops.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eWelded nut accepts common socket sizes for quick removal.\u003c\/li\u003e\n  \u003cli\u003eReduces time and tools needed during oil change jobs.\u003c\/li\u003e\n  \u003cli\u003eSturdy construction prevents nut damage during removal.\u003c\/li\u003e\n  \u003cli\u003eIdeal for riders who perform frequent or roadside maintenance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIs this filter compatible with synthetic oils and high-performance setups?\u003c\/h3\u003e\n\u003cp\u003eYes — the KN-173C is engineered to perform with premium synthetic, conventional, and blended oils. The media and bypass calibration are optimized for the higher flow and thin viscosities often used in high-performance or long-interval service plans.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eRated for use with synthetic and blended motor oils.\u003c\/li\u003e\n  \u003cli\u003ePerformance-engineered bypass valve suited to modern oil chemistries.\u003c\/li\u003e\n  \u003cli\u003eLab-tested for burst strength to withstand higher pressure spikes.\u003c\/li\u003e\n  \u003cli\u003eSupports extended service intervals up to the manufacturer’s recommended limits.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? The K\u0026amp;N KN-173C is aimed at motorcycle owners and mechanics who ride Harley-Davidson Dyna and compatible FXB models and want a robust, service-friendly oil filter. It’s a practical choice for touring riders who favor longer oil-change intervals, enthusiasts upgrading to synthetic oils, and anyone who values faster maintenance thanks to the welded wrench-off nut. Always verify fitment for your specific year and model before purchase.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How often should I change the K\u0026amp;N KN-173C filter?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Follow your motorcycle manufacturer’s oil-change interval; KN rates support up to 20,000 miles in suitable conditions with compatible oil.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use the KN-173C with synthetic oil?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. KN-173C is optimized for synthetic, conventional, and blended oils and includes a bypass valve tuned for modern lubricants.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"K\u0026N","offers":[{"title":"Default Title","offer_id":67593279406265,"sku":"B000E28C68","price":56.27,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0822\/3765\/3177\/files\/k-and-n-kn-173c-front-view.jpg?v=1790574046","url":"https:\/\/redleafauto.ca\/products\/k-n-motorcycle-oil-filter-kn-173c-for-harley-dyna-fxb-high-flow-synthetic-media-welded-wrench-off-nut","provider":"Redleaf Auto","version":"1.0","type":"link"}