Ignition Coil + Iridium Spark Plugs for Ford F-750 (2016-2019) 6.8L

Direct-Replacement Ignition Coil and Iridium Spark Plug Kit for 2016-2019 Ford F-750 6.8L (P457 / Triton 3V)

What it Does: The Ignition Coil and Iridium Spark Plug Kit restores secondary ignition integrity on the 2016-2019 Ford F-750 to eliminate under-load misfires and maintain stable combustion efficiency across all ten cylinders.

The Stock Ford F-750 Ignition Breakdown Problem

Under severe commercial duty cycles and heavy towing, the 6.8L Triton V10 engine bay generates sustained thermal loads that deteriorate the factory ignition components. The OEM coils (equivalent to FD509 and 8L3Z12029A) suffer from internal epoxy fatigue and secondary winding insulation failure due to chronic heat soak. Concurrently, the factory silicone boots become brittle, causing dielectric puncture and voltage tracking to the cylinder head wells. Paired with wide-gap electrode erosion on worn plugs, this breakdown forces the PCM into misfire fault codes, leading to rough idle, reduced towing torque, and unburned fuel washing down the exhaust catalytic system.

The Engineering Solution

This commercial-duty refresh kit includes ten direct-fit coil-on-plug (COP) units and matched fine-wire iridium spark plugs designed for severe service environments. The coils feature vacuum-impregnated high-grade copper primary and secondary windings encased in thermal-resistant resin to prevent internal short circuits under continuous commercial duty. Heat-stabilized silicone boots provide superior dielectric isolation, blocking spark leakages in high-heat cylinder banks. The included iridium spark plugs utilize laser-welded fine-wire center electrodes that require lower strike voltages, resist high-temperature spark gap expansion, and deliver consistent flame-kernel propagation under heavy load.

Technical Specifications

Compatibility

• 2016 Ford F-750 Base (6.8L V10 Gas)
• 2017 Ford F-750 Base (6.8L V10 Gas)
• 2018 Ford F-750 Base (6.8L V10 Gas)
• 2019 Ford F-750 Base (6.8L V10 Gas)

Frequently Asked Questions

Does this fit the P457 F-750?
Yes, this is a direct fit for the 2016-2019 Ford F-750 equipped with the 6.8L Triton 3V V10 engine.

What is the proper spark plug installation torque for this 3-valve head?
Torque spark plugs dry to 25-28 lb-ft to guarantee proper crush-ring sealing without damaging the aluminum cylinder head threads.

The Ford Heavy-Duty Standard

Commercial fleet operations demand consistent torque and continuous uptime. Replacing your coils and iridium plugs together prevents intermittent spark dropouts, keeping your heavy-duty payload moving without costly fleet downtime.