NGK 6046 DCPR7EIX IX Iridium Spark Plug - Compatible with 2017 Harley-Davidson Dyna Fat Bob - FXDF Review

Make sure you know how to space precious metal spark plugs properly. They came out 0.1 of what I needed. Be sure to check yours. Otherwise top performance!

My original spark plugs had a large gap at 25,000 miles so I expected a significant improvement in throttle response with these plugs. The improvement on my 2009 HD Softail Deluxe seemed marginal at best.

I have no problem with these end caps but note they do NOT come with preset gaps; at least on our 2011 Fat Boy the difference was not in the acceptable range of 0.038 to 0.043. The distance was much smaller. Verification is quick and easy and highly recommended.

Funny how Revane says they don't fit my 2004 Harley Davidson Low Rider. I pulled out products that show they work for my bike and it shows only four packs of these work. They seem to work well, but I haven't driven many miles since I installed them. This was a preventative maintenance update as I bought a used bike and needed instructions on how to change the spark plugs. The HD connectors I pulled looked fine.

Install these spark plugs and you'll feel an instant increase in power as soon as you release the clutch and the engine springs to life in all gears. You also save on gas. I get a 2mpg increase in fuel economy with these plugs, and those savings quickly add up. I have them in my Triumph and in my Harley-Davidson. do they hold? Yes, I drove them 20,000 miles and they looked like new, put them back on and drove another 20,000 miles. They never failed, tripped, overheated, etc. This is a really…

I fix my old HD ultra classic myself. I love doing this and keeping it running but I forgot to do something important a while ago. I replaced my OEM spark plugs with these NGK Iridiums after the bike had clocked 5,000 miles. Since these are high quality forks, I planned to change them every 10km. Well they work so well I forgot to change them until last week. The bike is close to 50,000 miles and has finally received a new NGK Iridiums kit. I think 45,000 miles with the same plugs is pretty…

So I was the guy who wanted nothing but genuine Harley accessories in his 03' Sporty, as did a lot of my well-meaning motorcycling friends. But after dealing with fouled spark plugs and hard starts after a long ride, not to mention a few instances of the carb being pulled and cleaned (I thought that was the problem), I decided to look elsewhere (except for the dealers) for answers. The spark plugs were the first thing to look at to improve the situation. So far these plugs are great…