Ignition Coil & Iridium Spark Plugs for Audi R8 (2008-2014) 4.2L V8

High-Output Ignition Coil & Iridium Spark Plugs for 2008-2014 Audi R8

What it does: Replaces deteriorating OEM ignition components to restore proper firing voltage, eliminate high-RPM misfires, and improve combustion efficiency in the 4.2L FSI V8.

The Stock R8 Ignition Shortcoming

The 4.2L FSI V8 is a high-revving naturally aspirated engine, but its mid-engine layout and tightly packed engine bay subject the factory ignition coils to extreme thermal cycling. Over time, the epoxy potting within the OE coils degrades and the internal secondary windings begin to break down, leading to voltage leaks and localized heat soak. This thermal deterioration results in high-RPM misfires, inconsistent idle quality, and premature spark plug wear. When the factory coils begin to fail under heavy engine load, the ECU registers the misfire and pulls timing to prevent detonation, significantly reducing output and drivability.

The Engineering Solution

This ignition service kit addresses inherent OE weaknesses by utilizing upgraded copper wire internals engineered with higher thermal resistance. The coils feature premium dielectrics and heavy-duty silicone boots to prevent voltage punch-through under high-stress conditions. Paired with fine-wire iridium spark plugs, the system delivers a more concentrated, intense spark that requires less firing voltage from the coil itself. This reduces strain on the primary ignition circuit while yielding up to a 15% increase in spark energy. The OE+ durability ensures an exact direct replacement fitment, stabilizing the spark kernel at redline and ensuring complete cylinder combustion without voltage drop-off.

Technical Specifications

Compatibility

• 2008 Audi R8 4.2L V8
• 2009 Audi R8 4.2L V8
• 2010 Audi R8 4.2L V8
• 2011 Audi R8 4.2L V8
• 2012 Audi R8 4.2L V8
• 2013 Audi R8 4.2L V8
• 2014 Audi R8 4.2L V8

The Audi Precision Standard

European precision demands exact electrical tolerances. This ignition kit maintains the strict resistance values required by the factory Motronic ECU, ensuring zero phantom misfire codes, no check engine lights (CEL), and smooth, linear power delivery across the entire rev range.