Unique Design Is Proprietary To Ford 3-valve Engines
One Heat Range Colder Than The Stock Mustang GT Plug
Two Heat Ranges Colder Than The Stock 5.4L Truck 3-Valve Engine
Sold In Sets Of 8
What's in the Box
(8) Spark Plugs
These Ford Racing spark Plugs are for use in engines with higher than stock cylinder combustion pressures such as supercharger application on 2005-2007 Ford Mustangs with a 4.6L engine. Their unique design is proprietary to Ford 3-valve engines. They are one heat range colder than the stock Mustang GT plug and two heat ranges colder than the stock 5.4L truck 3-valve engine. Sold in sets of 8.
Fits all 3V heads requiring "High Thread" design spark plugs
Engines with late style 12mm spark plugs can be identified by coil engineeing number 8L3E. Engines with early style 16mm "High Thread" design spark plugs can be identified by coil engineering number 3L3E.
Ford Racing Performance Parts - Mustang Ford Racing Parts
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