Up for sale is Kawasaki 300 & 310 Ultra JET SKI Waverunner (4) NGK PMR9B (Part# 4717) Spark Plugs & Oil Filter (Part# 16097-0007). The oil filter is Kawasaki Genuine OEM. The spark plugs & oil filter are for 2011 and newer Kawasaki 300 & 310X, XL, R ultra Jet Skis. These plugs are high performance Laser Platinum with benefits of stronger spark, less fouling, increased performance, improved fuel economy, reduced emissions and extra life. These plugs work well with upgraded mods to your jet ski. Kawasaki recommends changing plugs & oil filter once a year for peak performance. The plugs & oil filter are brand new.