Breeze3at Experienced Member Oct 18, 2020 #11 Harley plugs have served me well. I change them when they get rusty looking. My '07 is on it's second set. Use a good cross reference chart if you use another brand. Save yourself some money, no plugs give miracle performance or mileage increase.
Harley plugs have served me well. I change them when they get rusty looking. My '07 is on it's second set. Use a good cross reference chart if you use another brand. Save yourself some money, no plugs give miracle performance or mileage increase.
