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Replace Spark Plug Wires On A Harley Davidson Sportster
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How to install Spark plug wires on my 1995 Sportster.A nice upgrade for the money. My wires were old.
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DIY Option #1 
Motoforti 2 Pcs 10.4mm 10mm Spark Plug Wire Kit for Harley Davidson Big Twin FXD Dyna 2000-2017 for Harley-Davidson Softail 1999-2017 Spark Plug Wires Motorcycle DYNA-409RD Red Silicone
- [OE Number] DYNA-409RD. This is available for street or race applications.
- [Fitment] For Harley-davidson Dyna FXD 2000-2017, For Harley-davidson Softail 1999-2017. Normally fit for like factory location on cylinder for Harley-Davidson or Big-Twin which has the coil mounted on the seat post. Please confirm make/model/year and size of the spark plug before purchase.
- [Features] Come with 10.4mm & 10mm rubber ends, black 90 degree and straight boots for pre-crimped. Adopted with silicone material for whole jacket, insulation and core to bear high-temperature.
- [Function] Prolong the service time of the engine and reduce fuel waste. A replacement for wire, relocation kits, new look, bobbers, scramblers, cafe racer etc.
- [Package] Include 2x Spark plug wire pre-crimped. Please connect it with original way or search professional video when replace it in doubt.
DIY Option #2 
Atesilor 10.4mm Spark Plug Wires Compatible with Harley-Davidson Big Twin Dyna Super Glide/Wide Glide/Low Rider 2000-2017 & Softail Springer/Slim/Deluxe/Deuce 1999-2017
- Replacement Part Number: DYNA-409BK. The package contains a 5.71 inch and a 17.72 inch long spark plug wire, equipped with 10.4mm rubber end
- Wide compatibility: This 409 ignition plug wire is compatible with Harley-Davidson Big Twin Dyna Super Glide/Wide Glide/Low Rider 2000-2017 & Softail Springer/Slim/Deluxe/Deuce 1999-2017
- High Quality Material: This spark plug wire is made of high quality rubber material to ensure that the wire can work properly in extreme temperatures. Ensure good electrical conductivity stable resistance, and the stability of current transmission
- Function: This 409 spark wire mainly converts the low-voltage electricity provided by the battery into high-voltage electricity, so that the spark plug generates sparks, thus igniting the gas of the cylinder, and your car can start smoothly
- Replace New Spark Wire: When your motorcycle does not start, it may be that the spark plug wire has produced wear, resulting in limited current conversion, unable to ignite the gas in the cylinder, and therefore cannot start. At this time you can try to replace the spark wire to solve the problem
DIY Option #3 
2 Pcs 10.4mm 10mm Motorcycle Spark Plug Wire Kit Replacement for Harley Davidson Big Twin FXD Dyna 2000-2017, Replacement for Harley-Davidson Softail 1999-2017 (Blue)
- Replaces part number: DYNA-409RD. This is available for street or race applications
- Fitment: Replacement for Harley-davidson Dyna FXD 2000-2017; Replacement for Harley-davidson Softail 1999-2017
- Material: Come with 10.4mm & 10mm rubber ends, black 90 degree and straight boots for pre-crimped
- Features: Adopted with silicone material for whole jacket, insulation and core to bear high-temperature
- Function: Prolong the service time of the engine and reduce fuel waste. A replacement for wire, relocation kits, new look, bobbers, scramblers, cafe racer etc
*Options last updated on 2025-04-19 at 12:46.
