Ignition Coil and Iridium Spark Plugs for Ford F-150 (1997-1999) 4.6L

Heavy-Duty Direct-Fit Ignition Kit for 1997-1999 Ford F-150

What it Does: Complete direct-replacement 8-piece ignition coil and iridium spark plug package engineered to eliminate secondary ignition breakdown and restore precise combustion on 4.6L V8 engines.

The Stock F-150 Secondary Ignition Degradation

Deep cylinder-head plug wells in the Modular 4.6L 2V engine subject factory coil-on-plug boots to sustained thermal stress and trapped moisture. Over time, heat soak degrades the factory elastomer boots, resulting in dielectric breakdown, high-voltage flashover, and cylinder misfires under load. Concurrently, worn standard spark plug gaps increase required firing voltage, accelerating internal coil winding insulation failure.

The Engineering Solution

This comprehensive ignition kit integrates high-temperature silicone boots, precision-formed blade terminals, and premium copper internal windings to resist dielectric breakdown and thermal fatigue. Paired with fine-wire iridium spark plugs that require lower ignition voltage and maintain stable gap tolerances, this system ensures reliable arc transfer, rapid flame-front propagation, and stable idle stability even under harsh towing conditions.

Technical Specifications

Compatibility

• 1997 Ford F-150 (4.6L V8 Standard Cab, Extended Cab)
• 1998 Ford F-150 (4.6L V8 Standard Cab, Extended Cab)
• 1999 Ford F-150 (4.6L V8 Standard Cab, Extended Cab)

The Ford Durability Standard

Engineered to handle the demanding electrical loads of sustained towing and heavy hauling, this kit provides reliable combustion recovery across all eight cylinders without intermittent misfire codes.