Hoypeyfiy ignition coil is a replacement for STIHL MS311 MS391 gasoline chainsaw ignition module. Interchange Part NUmbers: 1140-400-1303 11401305B. Function: Hoypeyfiy ignition coil can improve combustion efficiency and strengthen electrical performanc, provide a higher intensity spark for easy starting and smoothing riding. Easy to Install, direct replace the existing ignition coil, no modication is needed. Package Includes: 1 ignition coil as pictured.
