Direct-fit aftermarket spark plug for Stihl small engines and outdoor power equipment. Built to OEM specifications for easy installation and reliable performance.
Fits These Models
Stihl FS80
Stihl SP80
Stihl FS75
Stihl FS85
Stihl FC75
Stihl FC85
Stihl KM85
Stihl HL75
Replaces OEM Part Numbers
4137 400 1350
Fitment tip: Always verify your engine or equipment model number against the list above before ordering. Questions about compatibility? Contact us — we're small engine parts specialists.
