Land Rover Range Rover Discovery 3 Jaguar Iridium Spark Plug IFR5N10 LR005253 OEM Grade Replacement

On Land Rover Range Rover, Discovery 3, and Jaguar engines, IFR5N10 iridium spark plugs (OEM number LR005253) undertake the critical task of igniting the air-fuel mix, directly affecting power output and fuel efficiency. Compatible with many Land Rover and Jaguar models produced after 2000; installation difficulty: medium; typical work time 1–1.5 hours (model dependent). Engine misfires, rough idle, increased fuel consumption, or starting difficulties usually indicate worn electrodes or severe carbon buildup; replace promptly to ensure stable combustion.