Features: 1. OE Number: The chainsaw ignition coil replacement part number is 503639801 for reference. Please double check the part number of your original before purchasing. 2. Applicable Models: This heavy-duty chainsaw ignition coil is specifically designed as a replacement for models 394, 394XP, 395, and 395XP, offering a precise fit and high efficiency. 3. High Efficiency: The chainsaw ignition coil effectively improves combustion efficiency and enhances electrical performance, providing a better user experience. 4. Fast Response: This premium-quality chainsaw ignition coil delivers a higher intensity spark with faster recovery and response, offering improved performance. 5. Convenient Installation: Manufactured with high-precision engineering for an exact match, this ignition coil allows for direct replacement of worn or damaged units, saving time during installation. Specifications: Item Type: Chainsaw Ignition Coil Material: Copper OE Number: 503639801 Fitment: Replaces 394, 394XP, 395, 395XP Package List: 1 x Ignition Coil 1 x Spark Plug 1 x Harness Note: 1. Please verify the part number of your original unit. Reference information is provided for guidance only. 2. If you are uncertain about compatibility, please before purchasing to avoid unnecessary returns. Thank you!