Heat-Active alloy allows electrodes to reach optimal temperature quickly Iridium center electrode delivers maximum life Fine-wire center electrode and V-trimmed for greater ignitability V-trimmed ground electrode promotes sharper spark focus Maintains stable operating temperature under all engine loads
***** USE FROM FRAME SERIAL # MZBB-1000001 to MZBB-9999999 **** —– Fits Honda LAWN MOWER ALL HRM215 —–