Ignition Coil & Iridium Spark Plugs for Audi Q7 (2007-2010) 4.2L V8

High-Output Ignition Coil & Iridium Spark Plugs for 2007-2010 Audi Q7

What it is for: A complete direct-replacement ignition coil and iridium spark plug package designed to restore proper voltage delivery and combustion efficiency to the 4.2L FSI V8 engine.

The Stock Q7 Ignition Weakness

The factory ignition coils on the 4L-chassis Audi Q7 are highly susceptible to thermal degradation. Positioned directly atop the 4.2L BAR V8, these OEM coils endure severe heat soak cycles that eventually break down the internal epoxy potting and primary windings. This thermal stress leads to micro-cracking in the coil boots, resulting in voltage leaks, intermittent misfires under load, and a rough idle. Furthermore, standard spark plug electrodes wear down over time, widening the spark gap. This requires higher voltage demands that prematurely kill aging OEM ignition coils and reduce overall throttle response.

The Engineering Solution

This comprehensive ignition overhaul kit addresses the inherent thermal weaknesses of the factory components. The replacement ignition coils feature heavy-duty copper wire internals and upgraded insulation materials to resist high-temperature breakdown, ensuring consistent voltage output even under sustained engine loads. By pairing these highly durable coils with precision-gapped Iridium spark plugs, the system requires less voltage to bridge the spark gap. Iridium’s extremely high melting point prevents electrode erosion, maintaining optimal spark focus for a complete fuel burn. This combination delivers up to a 15% improvement in spark energy transfer, eliminating high-RPM misfires, stabilizing idle vacuum, and restoring the V8's original power delivery without triggering false CEL codes.

Technical Specifications

Compatibility

• 2007 Audi Q7 4.2L V8
• 2008 Audi Q7 4.2L V8
• 2009 Audi Q7 4.2L V8
• 2010 Audi Q7 4.2L V8

The Audi Precision Standard

Designed specifically for European powertrain tolerances, this ignition service kit ensures flawless operation within the engine management system, delivering restored power, a perfectly smooth idle, and zero check engine lights.