E3 E3.18 Small Engine Spark Plug

Should I Gap E3 Plugs?

E3's open ground electrode design encourages a rapid spark discharge while reducing flame quenching. This results in a more efficient burn, improving performance and fuel economy.

• Shell
• Thread Diameter14mm
• Thread Pitch1.25mm
• Seat TypeGasket
• Reach19mm (3/4")
• Hex Size13/16" (21mm)
• Terminal TypeRemovable Nut
• Gap.028" (0.7mm)

• Center Electrode
• MaterialNickel
• TypeStandard
• Size2.5mm
• ProjectionNon-Projected

• Ground Electrode
• MaterialNickel
• TypeDiamondFIRE

• Specifications
• ResistorNo
• Torque SpecsCast Iron: 25-30 lb. ft. Aluminum: 18-22 lb. ft.

• Part Information
• BrandE3
• WarrantyLifetime
• LongevityUse Equipment Recommended Replacement Interval

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  • Yard-Man
    • 33" Verify fitment
    • 45" Verify fitment
    • E993I, E993J Verify fitment