3V Cold Spark Plugs

The Ford Performance 3V Cold Spark Plugs are engineered for high-performance applications, specifically for 3V heads with a 16mm thread size. They feature a 16mm thread size, a 0.866-inch (22.00mm) reach, and a tapered seat style, distinguishing them as shorty spark plugs. These spark plugs are intentionally one heat range colder than stock. This design is beneficial for applications such as nitrous-fed engines or supercharged setups where increased combustion temperatures are present. They are sold in engine sets of eight, providing a complete replacement for your vehicle's ignition system. The M-12405-3V0 is specifically recommended for early style 2005-2008 3V heads, while M-12405-3V12MM is for 2008 and newer 3V heads.