A-Premium Spark Plugs Compatible with Beta RR 350 2011-2020, RR 390 2015-2020, Pack of 4

["[Vehicle Fitment]: Compatible with Beta RR 350 2011-2020, RR 390 2015-2020 --- 4x Nickel Spark Plugs","[Reference Number]: 4786, 78039093000, 90239093000, LKAR8A9","[Specifications]: ①Center Electrode Tip Material: Nickel; ②Center Electrode Core Material: Nickel; ③Pre-Gap Size (MM): 0.8-0.9; ④Hexagon Size (MM): 14; ⑤Thread Reach (MM): 26.5; ⑥Installation Torque(N M): 20-25","[Exceptional Ignitability]: Designed alongside OEMs and engineered for maximum ignition performance","[Ideal Replacement Interval]: For optimal engine performance and longevity, it is recommended to replace nickel alloy spark plugs at mileage intervals of 20,000 to 30,000 miles"]