Ignition Coil and Iridium Spark Plugs for Ford Mustang (2005-2009) 4.6L
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High-Output Direct-Fit Ignition Kit for 2005-2009 Ford Mustang
Direct Replacement Ignition Upgrade: Restores factory secondary ignition performance and eliminates high-load misfires on 3-valve Modular V8 engines.
The Stock Mustang Ignition Weakness
The factory coil-on-plug (COP) units on the 4.6L 3V Modular engine frequently suffer from thermal degradation due to tight cylinder head packaging and intense under-hood heat cycles. Over time, internal epoxy insulation breaks down, causing internal voltage arc-over, high-RPM spark blowout, rough idling, and hesitation under open-throttle load.
The Engineering Solution
This comprehensive service pack replaces all eight coil assemblies and spark plugs with heavy-duty components. The ignition coils feature premium internal copper windings and high-dielectric epoxy potting to withstand severe thermal stress and prevent dielectric breakdown. Paired with fine-wire iridium spark plugs, this kit provides a stable, concentrated spark kernel with lower required firing voltage, optimizing flame-front propagation and preventing carbon fouling under sustained operating temperatures.
Technical Specifications
| Fitment | 2005-2009 Ford Mustang |
| Engine / Chassis | 4.6L 3V Modular V8 / S197 |
| Stock Output | 300 hp / 320 lb-ft (Approx) |
| Part Number | DG511, DG-511, FD508, SP546, UF537 |
Compatibility
- 2005 Ford Mustang GT 4.6L V8
- 2006 Ford Mustang GT 4.6L V8
- 2007 Ford Mustang GT 4.6L V8
- 2008 Ford Mustang GT / Bullitt 4.6L V8
- 2009 Ford Mustang GT / Bullitt 4.6L V8
The Ford Muscle Caliber
Engineered to meet demands of modern street and track driving, this ignition kit delivers smooth idle stability, sharp throttle response, and uncompromised combustion efficiency throughout the powerband.
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