Ignition Coil and Iridium Spark Plugs for Mercury Milan (2010-2011) 2.5L

Direct-Fit Ignition Coil and Iridium Spark Plug Kit for 2010-2011 Mercury Milan

Complete Ignition Refresh: Replaces degraded factory coil-on-plug units and worn plugs to eliminate cylinder misfires, stabilize erratic idle, and restore peak combustion efficiency.

The Stock Milan Ignition Breakdown

Under-hood thermal cycling in the CD3 engine bay causes significant dielectric degradation in the factory coil assemblies. Over time, internal epoxy breakdown and boot micro-cracking lead to secondary voltage leakage. Combined with plug electrode erosion, this increased firing resistance results in hesitant acceleration, diminished fuel economy, and persistent P0300-P0304 misfire codes.

The Engineering Solution

This direct-replacement kit pairs four high-output ignition coils with matched fine-wire iridium spark plugs. Built with premium-grade internal copper windings and high-dielectric thermoplastic housings, the coil packs resist thermal stress and ensure consistent spark delivery across the entire RPM band. The iridium plugs offer superior thermal durability and precise gap retention for clean, complete flame-front propagation.

Technical Specifications

Compatibility

• 2010 Mercury Milan Base 2.5L L4 - Gas
• 2010 Mercury Milan Premier 2.5L L4 - Gas
• 2011 Mercury Milan Base 2.5L L4 - Gas
• 2011 Mercury Milan Premier 2.5L L4 - Gas

The Mercury Reliability Standard

Engineered for exact drop-in fitment, this ignition set restores factory-smooth operation, ensures immediate cold-start reliability, and eliminates check engine lights without requiring harness modifications or custom tuning.