Ignition Coil and Iridium Spark Plugs for Land Rover Range Rover Sport (2006-2009) 4.2L 4.4L

Direct-Fit Ignition Coil and Iridium Spark Plug Kit for 2006-2009 Land Rover Range Rover Sport

What it Does: Replaces degraded factory coil-on-plug packs and worn spark plugs with high-dielectric assemblies and fine-wire iridium plugs to eliminate cylinder misfires and restore factory combustion efficiency.

The Stock Range Rover Sport Ignition Breakdown

The AJ-V8 engine bay packaging in the L320 chassis subjects ignition components to intense, prolonged heat soak. Over time, thermal cycling breaks down the OEM coil insulation and causes internal copper winding separation. This results in secondary voltage leakage, rough idle, hesitant acceleration, and persistent P0300-P0308 diagnostic trouble codes. Furthermore, worn factory plug gaps increase the required ionization voltage, accelerating coil pack failure under heavy load.

The Engineering Solution

This direct-replacement ignition kit includes eight reinforced coil-on-plug units built with premium internal copper windings, durable blade terminals, and high-temp silicone boots to prevent dielectric breakdown and arc-through. Matched with eight fine-wire iridium spark plugs, this setup reduces the voltage required to jump the gap, ensuring reliable cold starts, stable high-RPM spark delivery, and complete fuel atomization across both naturally aspirated and supercharged models.

Technical Specifications

Compatibility

• 2006-2009 Land Rover Range Rover Sport HSE 4.4L V8 Naturally Aspirated
• 2006-2009 Land Rover Range Rover Sport Supercharged 4.2L V8

The Land Rover Precision Standard

Engineered to exact European electrical impedance tolerances, these components ensure clean ECU communication, prevent false misfire detection, and deliver smooth power without triggering Check Engine lights.