Ignition Coil and Iridium Spark Plugs for Ram 1500 (2011-2013) 4.7L

Direct-Fit Ignition Coil and Iridium Spark Plug Kit for 2011-2013 Ram 1500

What it Does: The ignition coil and iridium spark plug kit replaces aged factory ignition components on the 2011-2013 Ram 1500 to eliminate secondary ignition breakdown, stabilize idle quality, and restore peak combustion efficiency.

The Stock Ram 1500 Thermal Degradation and Secondary Breakdown

Under sustained towing loads and repeated thermal cycling, the factory pencil coils on the DS platform succumb to dielectric breakdown. The internal copper windings develop micro-fractures, and the silicone spark plug boots harden and glaze, allowing high-voltage spark leakage to earth rather than bridging the plug gap. Coupled with standard copper core spark plugs that suffer from rapid electrode erosion and widening gaps under heat soak, the 4.7L PowerTech V8 experiences intermittent misfires (P0300 through P0308 codes), hesitant acceleration, and increased unburnt hydrocarbon emissions.

The Engineering Solution

This complete tune-up kit features heavy-duty coil-on-plug pencil coils paired with fine-wire iridium spark plugs engineered to resist thermal degradation. The coils utilize premium insulated copper wire and high-dielectric epoxy potting to prevent internal voltage arcing under high-demand operation. Each coil features an integrated heat-resistant fluorosilicone boot that maintains an airtight seal against the cylinder head spark plug tube. The accompanying iridium spark plugs utilize laser-welded, ultra-fine 0.6mm iridium center electrodes with high-purity alumina ceramic insulators. This metallurgy lowers required ignition voltage, delivers a more focused spark kernel for complete fuel atomization, and resists carbon fouling far longer than standard nickel-alloy plugs.

Technical Specifications

Compatibility

• 2011 Ram 1500 4.7L V8 (Tradesman, ST, SLT)
• 2012 Ram 1500 4.7L V8 (Tradesman, ST, SLT)
• 2013 Ram 1500 4.7L V8 (Tradesman, SLT, HFE)

Frequently Asked Questions

Does this fit the DS 1500?
Yes, this is a direct fit for the 2011-2013 Ram 1500 equipped with the 4.7L PowerTech V8 engine.

Are these spark plugs pre-gapped for installation?
While pre-gapped at the factory, always verify the spark plug gap against OEM service manual specifications prior to installation, using caution to avoid damaging the fine iridium tip.

The Ram Heavy-Duty Work Standard

Engineered for sustained hauling and demanding payload duties, this complete ignition refresh restores smooth idle characteristics, crisp throttle response, and reliable cold-crank ignition under heavy work truck operating conditions.