2Pcs CNPAPC Upgrade Double Iridium IX Spark Plugs DCPR7EIX #3144#6046#97637 for 1999-2016 Harley Davidson Twin Cam…

SUPER POWER: Double Iridium IX Spark Plugs are designed specifically for the performance enthusiast. Iridium IX offers extreme ignitability, improved throttle response. Double iridium is the best spark plug material MORE FUEL EFFICIENT: The flameout phenomenon rarely occurs when using double iridium spark plugs,The engine can also be kept in good running condition, resulting in lower fuel consumption. So it is really necessary to replace the good double iridium spark plugs. LONGER LIFE: The fine Double Iridium tip ensures high durability and a consistently stable spark. Double Iridium alloy has extremely high melting point, perfect for today's high-tech, high-performance engines. Trivalent Metal Plating - Outstanding acceleration, long life ,high fuel efficiency and durability. Ultimate design, technology and performance. COMPATIBLE MODELS: DCPR7EIX #3144 Replacement racing spark plug used by many professional car drivers and fit for 2000 Dyna Super Glide；1999-2016 Harley Davidson Twin Cam；XL Sportster 883/1200 1986-present; Ultra；Suzuki Boulevard ;If it has the same parameters as this product, it can be compatible QUICK AFTER SALES SERVICE: One order = 2 Pieces ，We provide 12 months warranty service for this spark plugs, and we attach great importance to every customer's satisfaction. If for any reason we are not meeting your expectations, please feel free to contact us and we will do our best to resolve all your concerns.