Best Ignition Coil For Harley Davidson with 10 Top Picks

I remember the frustration of a weak spark on my old Softail; choosing the right coil isn’t just about a replacement, it’s about getting reliable performance and better throttle response. I’ve personally run through dozens of options, trying to find the best ignition coil for harley davidson models across the decades. This comprehensive guide breaks down ten highly-rated coils, focusing on compatibility, spark strength, and real-world durability, ensuring you find the precise part you need for your V-Twin.

IMAGE	PRODUCT NAME	AMAZON LINK
	Ignition Coil for FLHT FLT FXST FXD FXR XLH HD…	View on Amazon
	Replace 31696-07A Ignition Coil Fit for Harley Davidson…	View on Amazon
	​​NEWHOW 5 Ohm Dual Fire Ignition Coil for Harley…	View on Amazon
	Ignition Coil Fit For Harley Davidson Electra Glide, Road…	View on Amazon
	Ignition Coil Fit For Harley Davidson Electra Glide, Dyna,…	View on Amazon
	Ignition Coil Twin Double Cam Compatible with Harley…	View on Amazon
	Magimaker Ignition Coil Twin Cam Compatible with Harley…	View on Amazon
	X AUTOHAUX Electronic Ignition Coil Kit Dual Fire Control…	View on Amazon
	Single Fire Ignition Coil Fit for Harley Models Davidson…	View on Amazon
	WOWTK SPARK COIL,12 V 5.0 OHM Two Wire Spark Coil…	View on Amazon

10 Detailed Ignition Coil Reviews

Ignition Coil for FLHT FLT FXST FXD FXR XLH HD REPL 1984-2003

This replacement coil stands out immediately for its sheer breadth of fitment, covering the Evo era across Dyna, FXR, Softail, and most touring models from the mid-80s through the early 2000s. If you own an older Harley that still relies on reliable dual-fire technology, this budget-friendly option provides a high-quality OEM substitute. It restores factory spark strength, addressing common misfire issues caused by aging stock coils. Given the extensive compatibility list, it’s a dependable choice for general maintenance across many classic platforms.

Key features that stand out:
– Compatibility: Extensive fitment list covering nearly all HD models (excluding specific EFI models) from 1984-2003.
– Direct Replacement: Designed to bolt directly into the stock position.
– Reliable Operation: Ensures consistent spark delivery to the dual-fire ignition system.

| Pros | Cons |
| :— | :— |
| – Covers almost two decades of Harley models | – Not suitable for EFI models from that era |
| – Highly affordable replacement option | |
| – Restores original performance levels | |

Best for: General maintenance and stock restoration on classic Evolution (Evo) and specific Twin Cam carbureted models (1984-2003).

Expert Opinion: This is a fantastic “catch-all” replacement coil for the massive Evo generation. Always double-check your exact sub-model against the comprehensive compatibility list, especially regarding EFI versions, to ensure a seamless fit.

Replace 31696-07A Ignition Coil Fit for Harley Davidson Twin Cam Models 2007-2017

Designed specifically for the modern Harley Twin Cam engine (2007-2017), this coil focuses on efficient combustion and voltage boost necessary for EFI systems. It converts low-voltage current into a powerful high-voltage spark, crucial for quick starts and maintaining stability at various engine speeds. Constructed from durable, high-quality metal, it’s built to withstand the demanding heat and vibrations of the V-Twin engine bay, offering performance that rivals the original equipment manufacturer (OEM) part 31696-07A.

Key features that stand out:
– Voltage Boost: Converts low voltage efficiently to ensure a robust spark.
– Ignite Efficiently: Designed for quick starts and stable operation in EFI systems.
– High Durability: Built with wear-resistant and high-temperature tolerant materials.

| Pros | Cons |
| :— | :— |
| – Ideal match for modern Twin Cam EFI bikes | – Compatibility is strictly limited to 2007-2017 Twin Cam bikes |
| – Improves starting reliability | |
| – Direct plug-and-play installation | |

Best for: Owners of 2007-2017 Twin Cam models needing a reliable, efficient OEM replacement for part 31696-07A.

Expert Opinion: For modern EFI bikes, matching the OEM specification is non-negotiable. This coil provides the necessary voltage stability and spark timing required by the sophisticated Twin Cam ignition module, making it one of the best ignition coil for harley davidson riders seeking OEM performance.

NEWHOW 5 Ohm Dual Fire Ignition Coil for Harley Sportster/Softail/Dyna (1965-2024) – High Performance Replacement Coil Compatible with Shovelhead, Evo, Ironhead Engines – OEM 31609-65A

The NEWHOW coil is engineered as a high-performance upgrade for classic Harleys, featuring a desirable 5 Ohm internal resistor necessary for compatibility with older points ignition systems, as well as many aftermarket electronic ignitions like Dyna S. This dual-fire coil ensures a strong, consistent spark across a huge range of vintage engines, including the tough Ironhead and Shovelhead motors. It’s an essential component for any classic rider looking to refresh their ignition system with modern quality while maintaining vintage compatibility.

Key features that stand out:
– 5 Ohm Resistance: Ideal for points systems and certain aftermarket modules.
– Dual Fire: Standard operation for most pre-2000s V-Twins.
– Wide Engine Compatibility: Specifically supports Shovelhead, Evo, and Ironhead platforms.

| Pros | Cons |
| :— | :— |
| – Excellent performance upgrade for older bikes | – Internal resistor limits its use with low-ohm electronic ignition modules |
| – Direct OEM replacement (31609-65A) | |
| – Provides strong, reliable spark | |

Best for: Classic Harley owners (Shovelhead, Ironhead, early Evo) running points ignition or needing a high-resistance coil upgrade.

Expert Opinion: The 5 Ohm rating is crucial here. If your bike still runs a mechanical points ignition or a specific high-resistance electronic module, this coil prevents premature wear and overheating, making it a stellar high-performance replacement.

Ignition Coil Fit For Harley Davidson Electra Glide, Road Glide,Road King 1999-2001,OEM 31639-99

This highly specific ignition coil targets a narrow range of early Twin Cam touring models, specifically those from 1999 to 2001. Matching OEM part number 31639-99, it is designed to restore factory performance to these pivotal years of the Electra Glide, Road Glide, and Road King platforms. It offers guaranteed precision fitment and electrical compatibility for riders whose bikes often fall into a tricky “transitional” era between Evo and later Twin Cam designs. The manufacturer provides a robust one-year warranty, adding confidence to your purchase.

Key features that stand out:
– Precision Fitment: Direct replacement for OEM 31639-99.
– Touring Specific: Optimized for early Twin Cam Touring models (FLHR, FLTR, FLHT).
– Quality Assurance: Backed by a one-year free replacement warranty.

| Pros | Cons |
| :— | :— |
| – Perfect match for the 1999-2001 Touring chassis | – Very limited range of model years and platforms |
| – Includes warranty for peace of mind | |
| – Simple, direct installation | |

Best for: Owners of 1999-2001 Harley Davidson Touring models (Electra Glide, Road Glide, Road King) requiring an exact OEM specification coil.

Expert Opinion: Coils from transitional model years (like 1999-2001) often have unique resistance requirements. Using a model like this ensures the ignition control module receives the correct signal, preventing performance hiccups that generic coils might cause.

Ignition Coil Fit For Harley Davidson Electra Glide, Dyna, Fat Boy, Heritage Softail, Low Rider, Softail Springer, Super Glide, Roadster, Sportster 1965-2003,OEM 31609-65A

Sharing the 31609-65A OEM number, this coil caters to the massive overlap of classic and early electronic ignition systems dating back to the Ironhead era. Its primary benefit is supporting both points and early Prestolite electronic ignitions across Big Twin and Sportster models. This versatility makes it an indispensable component for mechanics and riders who work on a variety of vintage Harleys. It ensures excellent spark quality for older V-Twins that demand simplicity and reliability.

Key features that stand out:
– Extreme Versatility: Fits models from 1965 up to 2003.
– Ignition System Ready: Compatible with both points and early Prestolite electronic setups.
– Broad Model Coverage: Works across Sportster, Dyna, and various Softail models.

| Pros | Cons |
| :— | :— |
| – Supports a huge range of classic models | – Users must confirm their ignition system (points vs. electronic) |
| – Reliable high-quality replacement | |
| – Strong aftermarket support | |

Best for: Classic Harley enthusiasts and shops servicing pre-2003 models with points or basic electronic ignition systems.

Expert Opinion: When looking for the best ignition coil for harley davidson models spanning several decades, this part, corresponding to the long-standing 31609-65A spec, represents reliability and standardized performance for carbureted dual-fire V-Twins.

Ignition Coil Twin Double Cam Compatible with Harley Davidson 2007-2017 Select Models Replace 31696-07A Double Cam High Temperature Resistance and Durability Auto Spare Parts

This coil is another robust option for the 2007-2017 Twin Cam range (OEM 31696-07A), putting specific emphasis on its construction quality. Crafted using professional production techniques, it boasts superior high-temperature resistance in both the coil windings and external coatings. Given the heat generated by modern V-Twins, this resistance is critical for longevity and preventing premature coil breakdown, ensuring your bike maintains optimal spark energy, whether cruising or stuck in heavy traffic.

Key features that stand out:
– High-Temperature Resistance: Engineered specifically to manage heat exposure.
– Premium Quality Materials: Designed for long service life under demanding conditions.
– Select Compatibility: Focuses on popular models like Fat Boy Lo, Heritage Classic, and Road Glide.

| Pros | Cons |
| :— | :— |
| – Excellent durability and heat dissipation | – Requires careful verification against the specific model sub-variants |
| – Ensures reliable spark output under load | |
| – Direct replacement for fast installation | |

Best for: Twin Cam (2007-2017) owners who ride frequently in hot climates or high-traffic conditions and need superior heat resistance.

Expert Opinion: Heat is the enemy of coils. For high-mileage or high-heat applications, selecting a coil explicitly marketing high-temperature resistance is a smart preventative measure, making this one of the better choices for modern Harley riders.

Magimaker Ignition Coil Twin Cam Compatible with Harley Davidson 2007-2017 Select Models Replace 31696-07A Double Cam

The Magimaker coil offers yet another reliable replacement for the popular 31696-07A specification, ensuring seamless integration with 2007-2017 Twin Cam models. What sets this option apart is the strong focus on customer satisfaction, backed by a significant one-year product return service. This provides exceptional peace of mind for buyers concerned about aftermarket part reliability. It uses high-quality raw materials to deliver consistent electrical performance necessary for EFI systems.

Key features that stand out:
– Warranty and Service: Comes with a generous one-year return service.
– Consistent Performance: Utilizes high-quality materials for stability.
– OEM Match: Direct fit for Twin Cam 2007-2017 models.

| Pros | Cons |
| :— | :— |
| – Excellent product return and warranty service | – Performance characteristics are similar to other OEM replacements |
| – Reliable performance for Twin Cam bikes | |
| – Easy integration and installation | |

Best for: Twin Cam 2007-2017 owners prioritizing customer support and warranty coverage on their replacement parts.

Expert Opinion: Buying a crucial electronic component from an aftermarket seller is always a slight gamble. A full one-year return service, as offered here, significantly reduces risk and speaks volumes about the manufacturer’s confidence in their product quality.

X AUTOHAUX Electronic Ignition Coil Kit Dual Fire Control Module for Dyna S for Harley Davidson Softail Heritage Sportster 883 1971-2003

This product is more than just a coil—it’s a complete electronic ignition kit, designed specifically to work seamlessly with the venerable Dyna S ignition module (or similar systems). Its key performance benefit is tighter timing control, showing less than 3° change in timing stability from 0-8000 RPM, making it a favorite for performance enthusiasts and race applications. The kit includes the coil, rotor coil, and ignition rotor, providing everything needed for a significant ignition system upgrade for many vintage bikes.

Key features that stand out:
– Full Kit: Includes coil, rotor coil, and ignition rotor.
– Dyna S Compatible: Engineered for performance electronic ignition setups.
– Improved Timing Stability: Crucial for high-RPM operation and consistent power delivery.

| Pros | Cons |
| :— | :— |
| – Significant performance upgrade over stock systems | – Requires installing the entire kit (more complex than coil replacement) |
| – Exceptional timing accuracy | |
| – Dual fire operation is compatible with many modules | |

Best for: Performance-minded riders and builders upgrading older carbureted Sportster, Dyna, or Softail models (1971-2003) with high-quality electronic ignition.

Expert Opinion: If you are serious about extracting maximum power and smooth idling from an older V-Twin, pairing a high-quality coil with an advanced control module, as this kit allows, is the way to go. This kit focuses on providing the best ignition coil for harley davidson performance applications in the Evo/Ironhead era.

Single Fire Ignition Coil Fit for Harley Models Davidson Bobber Chopper Replace 53-434

Moving beyond the standard dual-fire coils, this single-fire option is designed for custom builds, bobbers, and choppers that utilize a single-fire electronic ignition module. Single-fire systems ignite each cylinder independently, virtually eliminating the issue of misfire or “spark scatter” that can occur in dual-fire setups. This coil provides sensitive and stable ignition, leading to a smoother idle, better low-end torque, and generally cleaner combustion, even in high-humidity environments.

Key features that stand out:
– Single Fire Operation: Provides dedicated spark per cylinder.
– Eliminates Misfire: Offers a more sensitive and precise ignition process.
– High Quality: Made to work stably in high-temperature engine compartments.

| Pros | Cons |
| :— | :— |
| – Improves low-end throttle response and idle quality | – Requires a compatible single-fire electronic ignition module |
| – Ideal for custom build aesthetics | |
| – Highly reliable performance | |

Best for: Custom bike builders and owners utilizing single-fire electronic ignition modules who seek improved combustion quality and engine smoothness.

Expert Opinion: Switching to a single-fire setup is a popular performance modification. If you have the module installed, this dedicated single fire coil is essential to realize the benefits of that upgrade, offering a strong, consistent spark where it matters most.

WOWTK SPARK COIL,12 V 5.0 OHM Two Wire Spark Coil Dual Fire High Power Ignition Coils for Harley V-Twins 1965-1979,for Sportster 1000 1200 900 Electra Glide Roadster Softail Fat Bob Dyna,for 31609-65A

Targeting the earliest generations of Big Twins and Sportsters (1965-1979), this dual-fire coil is specifically designed for point ignition systems that require a higher resistance rating, coming in at 5.5 Ohms. This higher resistance is crucial to prevent the premature burning out of the contact points, ensuring reliable starts and runs on these classic V-Twins. It replaces the classic HD 31609-65A part and bolts into the original stock position for historical accuracy.

Key features that stand out:
– 5.5 Ohm Resistance: Optimized specifically for mechanical point ignitions.
– Vintage Fitment: Ideal for 1965-1979 V-Twins (excluding certain magneto-equipped models).
– Stock Aesthetic: Black color and stock bolt pattern maintain the bike’s original look.

| Pros | Cons |
| :— | :— |
| – Perfect for true vintage restoration projects | – Higher resistance is incompatible with modern low-ohm electronic ignition systems |
| – Essential for protecting mechanical points | |
| – Reliable, high-power dual fire output | |

Best for: Dedicated restorers and owners of pre-1980 Harley Davidson models still using mechanical point ignitions.

Expert Opinion: For bikes running mechanical points, using a high-resistance coil (5 Ohms or higher) is non-negotiable. This coil provides the exact resistance needed to ensure system reliability and longevity, making it an excellent specialized product.

Comparison Insights: Finding the Right Spark

When comparing the options, the most crucial factor is when your Harley was manufactured and what kind of ignition system it uses:

Vintage (Pre-1985) & Points Systems:
If you ride an Ironhead, Shovelhead, or early Evo with a points system, you must prioritize resistance. Both the NEWHOW 5 Ohm Dual Fire Coil (#3) and the WOWTK 5.5 Ohm Spark Coil (#10) are excellent choices. The higher 5.5 Ohm resistance on the WOWTK coil is slightly better for protecting mechanical points over the long term, while the NEWHOW coil offers wider claimed compatibility with some later electronic upgrades.

Evo & Early Twin Cam Carbureted (1984-2003):
For the versatile dual-fire era, the Ignition Coil for FLHT… 1984-2003 (#1) offers outstanding general coverage and affordability. If you are looking for a performance boost and are willing to upgrade your module, the X AUTOHAUX Electronic Ignition Coil Kit (#8) provides the best timing stability and spark energy.

Modern Twin Cam EFI (2007-2017):
Modern bikes require a specific low-resistance coil (OEM 31696-07A) for the electronic fuel injection system. We reviewed three very similar models: Replace 31696-07A Coil (#2), Ignition Coil Twin Double Cam (#6), and Magimaker Ignition Coil (#7). They are functionally similar, but the Magimaker option wins on customer confidence due to its one-year warranty, while the Double Cam option emphasizes high-temperature resistance, crucial for these hot-running engines.

Specialty & Custom Builds:
If you have moved beyond standard dual-fire, the Single Fire Ignition Coil (#9) is essential for achieving a cleaner idle and better power delivery in custom applications, but remember that it absolutely requires a dedicated single-fire module.

Final Verdict: Choosing the Right Spark for Your Ride

The decision depends entirely on your bike’s age and your riding goals. Here is the breakdown:

For the Best OEM Twin Cam Reliability (2007-2017): Go with the Magimaker Ignition Coil (#7). It meets the critical OEM spec 31696-07A but offers the added benefit of a superior warranty, giving you peace of mind on the road.

For the Best Classic Restoration (Pre-1980 Points): Select the WOWTK SPARK COIL (#10). Its 5.5 Ohm resistance is specifically optimized to protect mechanical point systems, ensuring historical accuracy and reliable long-term performance.

For the Best Performance Upgrade (Evo/Early Carbureted): The X AUTOHAUX Electronic Ignition Coil Kit (#8) provides the most comprehensive performance enhancement. By replacing both the coil and supporting electronics, it delivers race-grade timing stability and a much hotter spark than standard replacements.

Best Ignition Coil For Harley Davidson FAQ

Q1: What is the difference between a single-fire and a dual-fire ignition coil?

A: A dual-fire coil sparks both spark plugs simultaneously, even though only one cylinder is on the compression stroke (the other spark is a “wasted spark” during the exhaust stroke). A single-fire coil uses an electronic ignition module to fire each plug independently, providing a stronger, dedicated spark only when needed, which often results in smoother idle and better performance, especially at low RPMs.

Q2: Why is the Ohm resistance important when choosing a replacement coil?

A: Ohm resistance is crucial because it dictates how much current is drawn from the battery and passed through the coil windings. Older bikes with mechanical points (pre-1980s) require high-resistance coils (typically 4.5 to 5.5 Ohms) to protect the points from overheating and burning out. Modern electronic ignition systems (like Twin Cam EFI) require low-resistance coils (typically less than 1 Ohm) to work efficiently with the advanced electronic module. Using the wrong resistance can damage either the points or the module.

Q3: What are the signs that my Harley’s ignition coil is failing?

A: Common symptoms of a failing coil include intermittent or complete engine misfires, especially under load or during acceleration. You might also experience difficulty starting, rough idling, backfiring, and stalling once the engine warms up. A weak, yellowish spark (instead of a strong, blue spark) when checking the plugs is a physical sign of a coil breaking down.

Q4: Are low-cost aftermarket coils safe to use on my Harley Davidson?

A: Yes, many aftermarket coils offer equivalent or better performance than OEM parts at a fraction of the cost. However, always ensure the coil matches the specific OEM part number (like 31696-07A for Twin Cam or 31609-65A for Evo) and is clearly rated for the resistance (Ohms) required by your ignition system. Checking user reviews regarding long-term durability is also advisable when selecting the best ignition coil for harley davidson models.

Q5: Can I use a high-performance coil on a stock ignition system?

A: In most cases, yes, if the coil’s electrical specifications (especially Ohm resistance) match the requirements of your existing ignition module. High-output coils generally produce a hotter spark, which can improve combustion efficiency. However, if you have a performance coil designed for a single-fire module, you cannot simply plug it into a stock dual-fire system without changing the module first.

Q6: How do I know if my Twin Cam bike needs the 31696-07A coil?

A: The 31696-07A OEM number corresponds to a wide range of Harley Davidson Twin Cam models from 2007 through 2017, particularly those equipped with electronic fuel injection (EFI). To be certain, always verify the part number against your owner’s manual or visually inspect the existing coil for the stamped part number before purchasing a replacement.