1Part Number: The engine ignition module coil replacement part number is 1130 400 1302 for reference, please double check the part number of your original before purchasing. 2Ideal Application: The heavy duty ignition coil module is especially designed replacement for Stihl 017 018 MS170 Ms 180 Chainsaw to well and truly meet your demands. 3Higher Electrical Performance: The ignition coil is engineered to improve combustion efficiency and strengthen electrical performance, bringing a better using experience. 4Quick Response: The reliable chainsaw ignition coil can provide a higher intensity spark with faster recovery and response, providing you with more convenience. 5Good Replacement: Engine module coil part can greatly increase ignition energy intensity for easy starting and smoothing riding, you can replace your original with OEM standards.