Denso Iridium SIP Spark Plug FK20HR11 / 3426 Replaces DILFR6D11 ILFR6D11DENSOs ground-breaking, Super Ignition (SIP) Spark Plug is the next generation Iridium/Platinum technology thats making waves with vehicle manufacturers around the world, Featuring not one, but two ultra-fine, highly durable centre and ground electrodes, they produce exceptional spark and performance even in the demanding environment of lean-burn petrol engines. Vastly increased endurance. Improved Ignitability Improved Output Reduced Emissions Technologically Advanced Consolidated RangeDIMENSIONS: Height (mm): 48 Width (mm): 24.5 Length (mm): 92If you are unsure as to whether this is the correct part for your vehicle, please don\'t hesitate to contact us. Alternatively please use the cross reference table above.