Champion F10 Nickel Spark Plug, Vintage Pkg. (NLA) (NOS) 8 plugs in package.

Champion F10 Nickel Spark Plug, (NLA) (NOS) 
Discontinued, Vintage 70s Packaging, Un-opened in Good Shape. 

• Thread Diameter 18mm
• Thread Pitch1.5mm
• Seat Type Tapered
• Reach 11.6mm (.460")
• Hex Size 13/16" (21mm)

• Center Electrode
• Material Nickel
• Type Standard
• Size2.5mm

• Ground Electrode
• Material Nickel
• Quantity 1

• Specifications
• Heat Range 10