Ignition Coil & Iridium Spark Plugs for Land Rover LR4 (2014-2016) 3.0L V6

Direct-Replacement Ignition Coils & Iridium Spark Plugs for 2014-2016 Land Rover LR4

Restores proper combustion and resolves misfire codes by replacing aging factory ignition coils and worn spark plugs with robust, thermally-stable components.

The Stock LR4 AJ126 Ignition Shortcomings

The 3.0L Supercharged V6 (AJ126) in the LR4 generates significant under-hood temperatures, leading to accelerated degradation of the factory ignition coil epoxy and spark plug electrodes. Over time, constant thermal cycling causes micro-cracking in the OEM coil housings, allowing moisture intrusion and parasitic voltage leaks. This typically manifests as hesitation under load, a rough idle, and frustrating P0300-series misfire codes. Furthermore, standard factory plugs wear down rapidly under the supercharger's elevated cylinder pressures. This widens the spark gap, forcing the ignition coil to work harder to jump the gap, ultimately accelerating premature coil failure and reducing engine efficiency.

The Engineering Solution

This ignition coil and iridium spark plug kit is engineered specifically to withstand the extreme thermal environment of the L319 engine bay. The coils feature upgraded high-dielectric epoxy and reinforced polymer housings to resist severe heat soak and prevent high-voltage leakage. Precision-wound internal copper windings ensure consistent spark energy delivery, even under maximum supercharger boost. Paired with iridium spark plugs—which utilize a microscopic center electrode and exceptionally high melting point—this package guarantees a highly focused, intense spark. The mechanical result is a complete fuel burn, stabilized idle, restored throttle response, and optimized fuel economy without over-stressing the vehicle's electrical system.

Technical Specifications

Compatibility

• 2014 Land Rover LR4 3.0L V6
• 2015 Land Rover LR4 3.0L V6
• 2016 Land Rover LR4 3.0L V6

The Land Rover Caliber

For European luxury SUVs, electrical precision is paramount. This direct-replacement kit ensures your LR4 operates free of erratic Check Engine Lights, delivering the smooth, consistent, and reliable power required for both long highway stretches and demanding off-road trails.