Honda GENUINE OEM Harmony II HRT216 (HRT216S3DA) (HRT216SDA) Walk-Behind Lawn Mower Engines SPARK PLUG PLEASE VERIFY THE CORRECT PARTS FOR YOUR ENGINE/EQUIPMENT BEFORE SUBMITTING YOUR ORDER - IF YOUR ENGINE IS NOT LISTED IN THE DESCRIPTION, PLEASE CONTACT SELLER AND DO NOT ASSUME THAT IT WILL FIT FOR PARTS LOOK UP, PLEASE PROVIDE SELLER WITH THE FOLLOWING INFOS: ENGINE/EQUIPMENT'S MODEL, CODE TYPE AND SERIAL/FRAME NUMBER GENUINE OEM Honda HRT216S3DA HRT216SDA Spark Plug FAST & FREE SHIPPING!!! ***** USE UP TO FRAME SERIAL # MZCG-6299999 ****