{"product_id":"atesilor-spark-plug-wires-10-4mm-for-harley-dyna-softail-2000-2017-black-oem-fit-pair","title":"Atesilor spark plug wires 10.4mm for Harley Dyna \u0026 Softail (2000–2017) — Black, OEM-fit pair","description":"\u003cstrong\u003eAtesilor 10.4mm spark plug wires are a replacement pair designed to restore reliable ignition for Harley-Davidson Dyna (2000–2017) and Softail (1999–2017) models.\u003c\/strong\u003e\n\n\u003cp\u003eIf your Harley is showing weak starts, misfires, or worn plug leads, these 10.4mm black spark plug wires from Atesilor offer a direct-fit replacement built to OEM dimensions. Each package includes two lengths—about 5.7\" and 17.7\"—with 10.4mm rubber ends engineered to match original connections on many Big Twin Dyna and Softail models. The wires use heat-resistant rubber to tolerate under-seat and engine-bay conditions while maintaining stable current transfer for consistent ignition.\u003c\/p\u003e\n\n\u003ch3\u003eWill these wires fit my Harley Dyna or Softail?\u003c\/h3\u003e\n\u003cp\u003eThese ignition wires are manufactured to OEM sizing so they fit a wide range of Harley-Davidson Big Twin Dyna (Super Glide, Wide Glide, Low Rider) from 2000–2017 and Softail models (Springer, Slim, Deluxe, Deuce) from 1999–2017. Always check your bike’s year and model against the part finder or measure your existing leads before purchasing to confirm compatibility.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eIncludes two wire lengths—5.7\" and 17.7\"—matching common stock routing\u003c\/li\u003e\n  \u003cli\u003e10.4mm rubber ends compatible with factory plug and cap connections\u003c\/li\u003e\n  \u003cli\u003eMade to OEM dimensions for direct swap without modification\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does the material and construction affect performance?\u003c\/h3\u003e\n\u003cp\u003eThe wires use high-quality, heat-tolerant rubber that resists degradation from engine heat and vibration. That durable insulation helps preserve electrical integrity so low-voltage battery power is converted into consistent high-voltage pulses at the spark plug, improving starting reliability and throttle response.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHeat-resistant rubber reduces cracking and premature wear\u003c\/li\u003e\n  \u003cli\u003eSolid insulation minimizes electrical leakage and interference\u003c\/li\u003e\n  \u003cli\u003eBlack finish blends with original wiring for a clean look\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhen should I replace my spark plug wires?\u003c\/h3\u003e\n\u003cp\u003eReplace wires when you notice starting problems, intermittent misfires, visible cracking, or when insulation looks brittle. Worn wires can limit the ability to generate sufficient spark voltage, so swapping in new leads can often resolve ignition-related starting or performance issues.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eReplace if you see visible wear, splits, or hardened rubber\u003c\/li\u003e\n  \u003cli\u003eSwap wires when experiencing hard starts, rough idling, or misfires\u003c\/li\u003e\n  \u003cli\u003eRegular inspection during tune-ups helps prevent breakdowns\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow easy is installation for a DIY mechanic?\u003c\/h3\u003e\n\u003cp\u003eInstallation is straightforward for riders familiar with basic motorcycle maintenance: remove the old leads, match lengths and connectors, and route the new wires following original clips and channels. No special tools are required beyond common hand tools and a little patience to avoid pinching or overstretching the rubber ends.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDirect-fit design reduces trimming or modification needs\u003c\/li\u003e\n  \u003cli\u003eMatch the 5.7\" and 17.7\" wires to their original positions\u003c\/li\u003e\n  \u003cli\u003eInspect boots and connectors for secure seating during install\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: These Atesilor 10.4mm spark plug wires are aimed at Harley owners, DIY mechanics, and professional shops needing a reliable, OEM-dimension replacement for common Dyna and Softail Big Twin models from 1999–2017. Choose these leads if you want a straightforward swap to restore dependable ignition without changing your bike’s original routing or appearance.\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: Do these wires fit my 2005 Harley Softail?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes—these Atesilor wires are made to OEM specs and fit many 1999–2017 Softail models; verify with your model\/year or part finder.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Are special tools required to install the wires?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No special tools are needed; basic hand tools and careful routing are usually sufficient for installation.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Atesilor","offers":[{"title":"Default Title","offer_id":67593216753849,"sku":"B0DK1LDH8M","price":56.69,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0822\/3765\/3177\/files\/atesilor-front-packaging-black-wires.jpg?v=1790573157","url":"https:\/\/redleafauto.ca\/products\/atesilor-spark-plug-wires-10-4mm-for-harley-dyna-softail-2000-2017-black-oem-fit-pair","provider":"Redleaf Auto","version":"1.0","type":"link"}