Best Spark Plug Wires For Harley Davidson

When it comes to optimizing the performance of your Harley Davidson motorcycle, every component matters. Spark plug wires are a critical part of the ignition system, and choosing the right ones can make a significant difference in your bike’s overall performance. In this guide, we’ll explore the best spark plug wires for Harley Davidson motorcycles, considering factors like material, compatibility, and performance.

Factors to Consider


The material of the spark plug wires greatly influences their durability and performance. Common materials include:

  • Copper Core: These wires offer good conductivity but may not be as durable as other materials.
  • Stainless Steel: Stainless steel wires are known for their corrosion resistance and longevity.
  • Silicone: Silicone spark plug wires are flexible, heat-resistant, and durable.

2. Compatibility

Ensure that the spark plug wires you choose are compatible with your specific Harley Davidson model and year. Harley Davidson motorcycles come in various engine sizes and configurations, so compatibility is crucial.

3. Heat Resistance

Harley Davidson engines can generate a significant amount of heat. Therefore, spark plug wires should be heat-resistant to prevent damage and ensure consistent performance.

4. Performance

Consider the performance benefits you seek. Some spark plug wires are designed for improved ignition and fuel efficiency, while others focus on reducing electrical interference for a smoother ride.

Top Spark Plug Wires for Harley Davidson

Now that we’ve discussed the factors to consider, let’s explore some of the top spark plug wires for Harley Davidson motorcycles:

1. NGK Spark Plug Wires

NGK is a respected name in the world of spark plugs and ignition systems. Their spark plug wires are known for:

  • Reliability: NGK wires are renowned for their consistent performance and reliability. They are designed to ensure your Harley starts reliably every time.
  • Heat Resistance: NGK uses high-quality materials, including silicone, which makes their wires resistant to extreme heat. This is especially important for Harley Davidson motorcycles that can run hot due to air-cooled engines.
  • Compatibility: NGK offers a wide range of wire sets tailored to different Harley Davidson models and years, ensuring a precise fit.

2. Sumax Thundervolt Spark Plug Wires

Sumax Thundervolt spark plug wires are popular among performance-oriented Harley riders due to their:

  • Performance Enhancement: These wires are engineered to maximize spark energy delivery to the plugs, resulting in improved combustion and increased power output. This can lead to quicker throttle response and better acceleration.
  • Durability: Sumax uses high-quality materials and silicone boots to ensure their wires can withstand the rigors of Harley Davidson riding, even in extreme conditions.
  • Compatibility: Sumax offers wire sets designed to fit various Harley models, and they are known for their ease of installation.

3. Taylor Cable 8mm Spiro-Pro Ignition Wire Set

The Taylor Cable Spiro-Pro wire set is favored for its advanced technology and design:

  • Spiral-Wound Core: The spiral-wound core of these wires minimizes electrical interference, which can result in a smoother ride and potentially even improved fuel economy.
  • Heat Resistance: These wires feature a silicone inner and outer layer that provides excellent heat resistance. They can endure high engine temperatures without breaking down.
  • Customization: Taylor Cable offers a variety of colors for their wires, allowing riders to add a personalized touch to their Harley’s appearance.

4. Accel 8.8mm Spark Plug Wires

Accel spark plug wires are the choice for those seeking maximum power and performance:

  • High-Energy Ignition: These 8.8mm wires are specifically designed for high-energy ignition systems. They provide a powerful spark, which can lead to improved engine performance and responsiveness.
  • Heat Resistance: Accel wires feature high-temperature silicone boots and a fiberglass braid for exceptional heat resistance. They are built to last in demanding riding conditions.
  • Compatibility: Accel offers wire sets compatible with various Harley Davidson models, ensuring a snug fit.

5. Screamin’ Eagle Spark Plug Wires

Screamin’ Eagle spark plug wires are the official performance wires offered by Harley Davidson:

  • Genuine Harley Parts: These wires are engineered by Harley Davidson, ensuring compatibility and a perfect fit for your motorcycle.
  • Heat Resistance: Like other high-quality wires, Screamin’ Eagle wires are designed to handle the heat generated by Harley’s air-cooled engines.
  • Performance Enhancement: While they maintain the stock appearance, they still provide reliable ignition and are an excellent choice for those who prefer using genuine Harley parts.

Top 10 Spark Plug Wires for Harley Davidson

BrandModelMaterialLength (inches)Price ($)
AccelSuper Stock8mm Silicone2430.99
NGKIridium IXCopper Core1225.49
Taylor Cable409 Pro Race10.4mm Silicone3038.95
SumaxClassic ClothSpiral Core2429.99
DynatekDW-8008mm Silicone2432.75
Screamin’ Eagle10mm Phat WiresSilicone3054.99
NologyHotWiresSilver Core942.00
Denso671-60988mm Silicone1822.99
MSD32829Helicore Core2445.00
SumaxThunderVoltSpiral Core3047.99

Key Features Comparison

BrandHeat ResistanceDurabilityResistanceCompatibilityWarranty (Years)
AccelHighExcellentLowHarley Davidson Big Twins1
NGKModerateVery GoodLowVarious Models2
Taylor CableHighExcellentVery LowHarley Davidson Big Twins1
SumaxHighVery GoodLowVarious Models2
DynatekHighGoodLowHarley Davidson Big Twins1

Customer Ratings

BrandAverage Rating (5 stars max)Number of Reviews
Taylor Cable4.4180

Price Comparison

BrandAverage Price ($)Budget-Friendly?
Taylor Cable38.95No

Installation Difficulty

BrandInstallation Difficulty (1-5, 5 being the hardest)
Taylor Cable4


Choosing the best spark plug wires for your Harley Davidson is a crucial step in optimizing your bike’s performance. Consider factors like material, compatibility, heat resistance, and performance enhancement when making your selection. Whether you opt for NGK, Sumax, Taylor Cable, Accel, or genuine Harley Davidson wires, upgrading your spark plug wires can lead to a smoother ride and better overall performance for your beloved Harley Davidson motorcycle.


Best Spark Plug Wires For Harley Davidson

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