Fangrui Product Details Fangrui Product Details Fitment: For 300e 450e 500e 550e 575e 600e Carb Engine.for 08p502 09p602 125cc 09p102 Series.for 550ex 625ex 675ex 725xi 140ccrestores Reliable Engine Starting: Replaces Fouled Or Worn Spark Plugs That Cause Hard Starts, Engine Misfires Or Inconsistent Power. Delivers A Strong, Consistent Spark To Ignite Fuel Efficiently-ideal For Reviving Petrol Mowers And Garden Equipmentimproves Fuel Combustion Engine Performance: Ensures Complete Fuel Burn In Each Cycle, Helping Your Mower Run More Smoothly And With Fewer Stalls. Supports More Efficient Fuel Usage And Extends Engine Life Over Timedurable Construction For Long-term Use: Built With A Copper Core, Nickel Alloy Tip Or Iridium For Maximum Conductivity And Wear Resistance. Designed To Perform Under High Compression And Temperature Cycles Typical In Garden Toolseasy To Installreplace: Fits Standard Mower Engines With Threaded Cylinder Heads-simply Unscrew The Old Plug And Install The New One Using A Spark Plug Wrench. For Regular Maintenance Or Quick Diy Tune-ups In Spring And Summer