Ignition Coil + Iridium Spark Plugs for Ford F-450 F-550 (2008-2019) 6.8L

Heavy-Duty Direct-Fit Ignition Coil & Iridium Spark Plug Kit for 2008-2019 Ford F-450, F-550

What it Does: The complete ignition kit replaces aged factory coil packs and spark plugs on the 2008-2019 Ford F-450 and F-550 to resolve secondary ignition breakdown, eliminate load-induced misfires, and restore peak combustion efficiency.

The Stock Ford F-450, F-550 Ignition Heat Breakdown

Under continuous commercial payload and towing stress, the Modular 6.8L Triton V10 generates extreme under-hood thermal loads. Factory ignition coils degrade over time as thermal cycling breaks down the internal epoxy potting, causing primary and secondary winding shorts. Furthermore, aged silicone boots develop micro-fissures, allowing high-voltage flashover and spark energy loss to the cylinder head rather than across the plug gap. Combined with standard electrode erosion on factory plugs, this causes uneven combustion, sluggish throttle under load, and flashing check engine lights for codes P0300 through P0310.

The Engineering Solution

This comprehensive service kit pairs ten reinforced direct-fit coil-on-plug units with premium fine-wire iridium spark plugs. The ignition coils feature premium copper windings insulated with vacuum-injected high-dielectric epoxy to resist high-temperature breakdown and vibration fatigue. High-grade fluorosilicone boots guard against dielectric puncture and moisture contamination. Paired with erosion-resistant iridium electrodes requiring lower strike voltage, this kit ensures consistent arc stabilization, optimal flame kernel propagation, and reliable cold-start operation under heavy commercial duty cycles.

Technical Specifications

Compatibility

• 2008-2019 Ford F-450 Super Duty 6.8L V10
• 2009-2019 Ford F-550 Super Duty 6.8L V10

Frequently Asked Questions

Does this fit the P473 and P558 chassis F-450 and F-550?
Yes, this is a direct fit for the 2008-2019 Ford F-450 and F-550 equipped with the Modular 6.8L Triton V10 3-valve engine.

What is the recommended installation torque for the spark plugs?
Torque the replacement spark plugs dry to 25 lb-ft in clean cylinder head threads to prevent blowout without damaging the aluminum threads.

The Ford Heavy-Duty Workhorse Standard

Engineered to handle severe fleet service and maximum gross combined weight ratings, this ignition upgrade delivers the dielectric reliability and consistent spark delivery required to haul, tow, and operate demanding PTO equipment without power loss.