Recommendations for the Best Spark Plugs for Harley?

When it comes to optimizing your Harley’s performance, one of the key components you might want to consider is the spark plug. Whether you’re a seasoned rider or just getting into the Harley community, selecting the right spark plugs can make a significant difference in your bike’s performance, fuel efficiency, and overall ride quality. Here’s what you need to know:

Why Spark Plugs Matter

Spark plugs are essential for igniting the fuel-air mixture in your engine, which affects how smoothly your bike runs. The right plugs can enhance throttle response, improve combustion efficiency, and provide a more reliable start-up.

Factors to Consider

  • Compatibility: Ensure that the spark plugs you choose are compatible with your specific Harley model. Different models may require different plug types.
  • Performance: Some spark plugs are designed for high performance, providing better conductivity and heat resistance.
  • Durability: Look for plugs that boast longevity and can withstand harsh conditions, as Harley engines can run hot.

Popular Brands

  1. NGK: Known for their reliability and performance, NGK plugs are a top choice among Harley riders.
  2. BKR6EIX: These are great for those looking to upgrade their spark plugs. They feature iridium tips for better ignitability.
  3. AccuFire: Great for custom builds, AccuFire plugs provide excellent performance and have a solid reputation in the community.
  4. Screamin’ Eagle: If you’re looking for something specifically made for Harley, the Screamin’ Eagle series is tailored for high-performance bikes.

Recommendations from the Community

  • Check the Heat Range: Different riding conditions require different heat ranges. Make sure you get advice based on how you ride.
  • Look for Reviews: Community forums and websites often have reviews from other Harley owners who share their experiences with specific spark plugs.
  • Installation Tips: When changing your spark plugs, make sure to do it properly to avoid damaging your engine. A lot of riders recommend checking the gap and using some anti-seize compound on the threads.

In conclusion, choosing the best spark plugs for your Harley involves understanding your bike’s needs and the riding conditions. Don’t hesitate to share your experiences or ask for specific recommendations based on your model. Happy riding!

When choosing spark plugs for a Harley, iridium plugs generally offer the best performance due to their durability and excellent conductivity. They can improve fuel efficiency and throttle response significantly.

That’s interesting! I always thought platinum plugs were better. What specific advantages do iridium plugs have over platinum?

Iridium plugs have a higher melting point, which helps them last longer and perform better under high temperatures compared to platinum plugs.

Copper plugs are more affordable but tend to wear out faster. They can be great for older models but might not be ideal for newer Harleys looking for optimal performance.

True! I have copper plugs in my Harley, and it seems like I’m changing them constantly. Maybe I should invest in iridium instead!

Just remember, while iridium plugs are great for performance, the installation and gap setting can impact their benefits. Always check your specific model’s compatibility and requirements.

That’s an excellent point! Is there a specific gap setting you recommend for iridium plugs on a Harley?

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For most Harleys, a gap of 0.040 inches is standard, but I suggest checking with your dealer for the exact requirements based on your model and year.

I find it funny how spark plugs can impact performance so much! Who knew a little piece of metal could make such a difference in your ride?

Haha, right? It’s like the ‘little engine that could’! But seriously, finding the right spark plugs can really change how your bike performs in terms of fuel efficiency and throttle response.

I’m currently using NGK Iridium plugs on my 2018 Softail. They’re fantastic! They provide a smoother ride and better fuel efficiency. Highly recommend them!

I’ve heard great things about the NGK Iridium plugs as well! Are they suitable for older models too? I have a 2010 Sportster.

For a 2010 Sportster, I’d suggest looking at HD’s OEM plugs, but the Accel Super Coils paired with those can really enhance performance. Have you considered that?

Thanks for the tip, sean08! Might go the OEM route for reliability. Any thoughts on performance differences?

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I’ve always used Denso spark plugs on my 2015 Road Glide, and they’ve been solid. Just be sure to check the gap for each plug; it can make a difference!

One thing I love about my Denso plugs is the extended lifespan. [quote=“andersonamanda, post:5, topic:4547”]I’ve always used Denso spark plugs…[/quote]
Have you ever had issues with fouling?

I had a brief issue with fouling on my old Touring model when I used non-OEM plugs. Switching back to OEM fixed it instantly. Just a thought!

I guess it really emphasizes the importance of matching spark plugs with specific models.

What are the benefits of using copper core vs iridium for Harleys? I’m considering options for my 2012 Fat Boy.