Set of 8 spark plugs for Jaguar/Range Rover 5.0L Supercharged Engines. These plugs are one heat range cooler than the OEM spark plugs. We recommend installing these on engines which are being fitted with Supercharger Crank Pulleys & ECU Tunes, due to the increased stress on ignition, to prevent misfires under heavy load, charge pressure & high intake air temperatures.
We recommend gapping these plugs at 0.036 for optimal performance.
Please contact us for more details about fitting this product.