Ignition Coil and Iridium Spark Plugs for Volvo S80 (2007-2010) 4.4L

Direct-Replacement Ignition Kit for 2007-2010 Volvo S80

What it Does: Replaces degraded factory coil packs and worn spark plugs with high-output coil-on-plug assemblies and fine-wire iridium plugs to restore precise secondary ignition timing and combustion efficiency.

The Stock S80 Ignition Breakdown

The compact 60-degree B8444S V8 engine generates intense thermal cycling within tight cylinder head spark plug wells. Over time, heat soak breaks down OEM epoxy insulation and hardens silicone boots, causing high-voltage dielectric leakage, intermittent spark dropouts under load, rough idling, and persistent P0300-P0308 misfire codes as factory spark plug gaps widen.

The Engineering Solution

This 8-cylinder refresh kit pairs direct-fit ignition coils featuring dense internal copper windings with corrosion-resistant blade terminals and high-grade silicone boots. Combined with fine-wire iridium spark plugs, the setup requires lower ionization voltage, promotes stable flame kernel propagation, withstands extreme thermal stress, and restores factory dwell response across all engine loads.

Technical Specifications

Compatibility

• 2007 Volvo S80 4.4L V8 AWD
• 2008 Volvo S80 4.4L V8 AWD
• 2009 Volvo S80 4.4L V8 AWD
• 2010 Volvo S80 4.4L V8 AWD

The Volvo Precision Standard

Engineered to meet stringent European powertrain tolerances, this kit ensures balanced cylinder-to-cylinder ignition performance, clean throttle tip-in, and reliable zero-misfire operation without triggering Check Engine Lights.