When adding power adders like nitrous, superchargers, or turbos to your Pony you need the correct spark plug to maximize horsepower. That is where Ford Racing "0-Degree" Spark Plugs come into play, these plugs are specifically designed for applications that require a one step colder heat range.Legendary Ford Racing Performance.
Add performance parts to your Pony made by the people who know it best. Ford Racing's legendary quality and performance ensure these 0-Degree Spark Plugs will deliver the consistent results you need to tune for maximum power.Application.
This set of eight (8) Ford Racing 0-Degree 12mm Spark Plugs are specifically designed as an upgrade for nitrous or force inducted 2008 to 2010 GT and Bullitt Mustangs equipped with Brown coil boots only.Identifing Your Coils.
Engines with late style 12MM spark plugs can be identified by coil engineering number 8L3E
printed on the coils. Engines with early style 16mm "High Thread" design spark plugs can be identified by coil engineering number 3L3E