Ignition Coil and Iridium Spark Plugs for Dodge Ram 1500 (2002-2008) 4.7L

Direct-Fit High-Output Ignition Kit for 2002-2008 Dodge Ram 1500

What it Does: Complete 8-cylinder ignition overhaul kit engineered to replace degraded OEM coil packs and worn plugs to eliminate secondary voltage leaks, misfires, and rough idle under heavy load.

The Stock Ram 1500 Ignition Coil & Plug Breakdown

The 4.7L PowerTech V8 operates under severe under-hood thermal cycles that degrade factory epoxy potting and primary/secondary copper windings over time. This continuous heat soak causes micro-cracking in factory boots, leading to dielectric breakdown, spark scatter, and intermittent misfires (P0300–P0308) during high-load towing. Concurrently, standard factory plug electrodes erode, increasing gap distance and overworking the secondary circuit.

The Engineering Solution

This replacement kit pairs eight direct-fit coil-on-plug assemblies featuring high-grade oxygen-free internal copper windings with eight fine-wire iridium spark plugs. The coils utilize reinforced dielectric epoxy potting and durable silicone insulating boots to prevent high-voltage flashover. Coupled with erosion-resistant iridium electrodes that maintain consistent gap tolerances under high cylinder pressures, this system ensures rapid flame propagation and stable combustion efficiency.

Technical Specifications

Compatibility

• 2002-2008 Dodge Ram 1500 (4.7L V8 PowerTech)

The Dodge Workhorse Durability Standard

Built to withstand continuous high-temperature duty cycles, heavy towing loads, and commercial hauling conditions without spark attenuation or electrical breakdown.