Why NGK Iridium? More Durability and a Higher Melting Point compared to Platinum, better center electrode anti-oxidation and anti-erosion, improved ignition, superior anti-fouling, lower required voltage, new metal shell plating process for better anti-corrosion. Select heat range 7 for lightly modified vehicles.
Note: These plugs DO NOT come pre-gapped.
Sold in sets of four.