This genuine Stihl contact spring is an integral part of the ignition system on compatible chainsaws. This metal component provides reliable electrical contact so the saw starts and stops as expected. Part number 1127 442 1600 is for use on select Stihl chainsaws including the following models: 029, 030, 031, 039, MS 290, MS 310, MS 390.
Chainsaws: 029, 030, 031, 039, MS 290, MS 310, MS 390