NGK 6046 DCPR7EIX Iridium Spark Review

I installed these on my Ultra Classic and had problems straight away. It turns out that a few years back Harley motorcycles used spark plugs as knock sensors, which confused the system. I had high idle issues and the solution was to switch it back to stock spark plugs. It's not really the plugs, but the manufacturer shouldn't list them as incompatible for years.

Just installed on a 2007 Street Glide. They came out of the box with a 0.025 gap. Harley recommends .038 to .042. I set them to 0.038 to account for wear and put some dialect grease on the connectors. Lubricants are not recommended for these plugs as the coating acts as a lubricant. In this case, reduce the torque by 30% to avoid over-tightening. Watch my full installation video on the unboxed YouTube channel /channel/UCQo58nrEgVVPDEgy5wwJ7dw

Best replacement for my 2007 Harley Electra Glide. I've had E3 forks for about a year. They worked fine, nothing spectacular as you might think. Then the other day I got a bike license that came and went. The cheapest way is to replace the spark plugs. I bought them and installed them, the bike flipped and seemed to work harder. As for longevity? I've only driven it 3/400 miles and my gas mileage has improved. Time will tell, but for now the difference between day and night. We recommend.