14mm x 25mm reach tapered seat sparkplug
Fits all Ford Duratec with VCT, Ford Ecoboost, Mazda DISI, and Mazda MZR engines with VCT
Silver electrode (superior current transfer)
Multiple heat ranges available
14 = For under 12.5:1 compression, or up-to 25psi boost
12 = For up-to 14:1 compression, or high-boost
8 = For methanol burning engines
Sold individually. Order a quantity of 4 for a complete set.