• 日本OS #F 四行程專用火星塞

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•  O.S. Type F Glow Plug 4-Stroke Medium 

• Specially shielded long-reach plug for use in O.S. (and other) four stroke engine. Shield keeps plug hot for lower idle RPM. For use with fuels with a 5-15% nitro content 

四行程引擎專用火星塞 適用各廠牌引擎

較長的火星塞 深入燃燒室 可維持較低的怠速不熄火 

請用 5~15%燃油