Ignition Coil and Iridium Spark Plugs for Lincoln Town Car (2008-2011) 4.6L

Direct-Fit Ignition Coil and Iridium Spark Plug Kit for 2008-2011 Lincoln Town Car

What it Does: Complete 8-cylinder ignition service kit engineered to eliminate secondary ignition breakdown, misfires, and rough idle by replacing worn factory coil-on-plug packs and eroded spark plugs with high-dielectric assemblies and fine-wire iridium plugs.

The Stock Town Car Ignition Breakdown

On the 4.6L Modular 2V V8, continuous engine bay thermal cycling degrades the factory coil boots and internal insulation. Over time, heat-induced micro-cracks in the silicone boots allow high-voltage spark energy to arc directly to the cylinder head rather than across the plug gap. This dielectric breakdown produces under-load shudder, hesitation during overdrive lockup, and unburnt fuel wash across catalytic converters. Additionally, standard factory plugs suffer accelerated center electrode erosion, driving up required firing voltages past the threshold of aging coils.

The Engineering Solution

This drop-in ignition kit utilizes premium copper primary and secondary windings insulated in high-grade epoxy resin to prevent internal arc-through under heavy thermal stress. Paired with fine-wire iridium spark plugs, the system lowers required ignition voltage while maintaining stable spark kernel propagation. High-temp silicone boots with reinforced internal stainless steel springs ensure zero voltage leakage, stabilizing idle RPM, restoring transient throttle response, and preserving long-term fuel efficiency.

Technical Specifications

Compatibility

• 2008 Lincoln Town Car (Signature Limited, Signature L, Designer Series) 4.6L V8
• 2009 Lincoln Town Car (Signature Limited, Signature L) 4.6L V8
• 2010 Lincoln Town Car (Signature Limited, Signature L, Continental) 4.6L V8
• 2011 Lincoln Town Car (Signature Limited, Signature L) 4.6L V8
• Interchange: DG508, DG491, FD503, DCE261, DCE263, DG481, FD493

The Lincoln Caliber Standard

Built to handle the high-mileage duty cycles typical of Panther-platform luxury cruisers, this kit restores factory-quiet combustion and uninterrupted low-end torque delivery without throwing misfire DTC codes.