Ford Performance M-12029-3V Ignition Coil Set for 2005-2010 Ford Mustang GT 4.6L

Vehicle Fitment

• 2005-2010 Ford Mustang GT / Bullitt / Shelby GT with 4.6L 3V engine and 12 mm spark plugs

Features

• OEM-grade ignition coil pack set by Ford Performance
• Direct replacement for stock ignition coils on 4.6L/5.4L 3V engines
• Designed for engines equipped with 8L3E coil units
• Sold as a complete engine set (8 coils)
• Improves spark delivery over aged factory coils
• Ideal when upgrading to or repairing late-style 3V head engines
• Required for proper function after certain cylinder head upgrades
• Black coil packs match factory visual style

Specifications

• Part Number: M-12029-3V
• Coil Configuration: Coil-on-plug set
• Quantity: 8 coils (engine set)
• Engine Compatibility: 4.6L and 5.4L 3V engines with 12 mm spark plugs
• Coil Identification: Designed for 8L3E style coils
• Spark Plug Thread Size: 12 mm
• Installation: Direct bolt-on replacement
• Application Restriction: Not compatible with 3V heads using "High Thread" 16 mm spark plugs

Included Components

• 8x ignition coil packs (complete engine set)

Product Description

The **Ford Performance M-12029-3V Ignition Coil Set** is a factory-engineered replacement and performance ignition upgrade designed specifically for late-style 4.6L and compatible 5.4L 3V engines that use 12 mm spark plug threads. This set of eight individual coil-on-plug units is a **direct fit replacement** for engines equipped with the original 8L3E coils, restoring reliable spark delivery and modern ignition control performance.

These coils are required when installing specific Ford Performance cylinder head upgrades on 2005-2008 Mustang GT platforms originally equipped with early "High Thread" heads, ensuring the ignition system works correctly with late-style 3V heads and plugs. Note that **this set does not fit engines with early-style 16 mm spark plug threads**. Designed for enthusiasts and performance builders seeking race-ready reliability or stock restoration, the M-12029-3V kit offers OEM-level quality backed by Ford Performance engineering.