✔Compatible with Honda&Acura models: For 2003-2007 Honda Accord 2.4L, 2002-2011 Honda Civic 2.0L, 2002-2009 Honda CR-V 2.4L, 2003-2011 Honda Element 2.4L, 2004-2006 Honda S2000 2.2L. For 2006-2011 Acura CSX 2.0L, 2002-2006 Acura RSX 2.0L. Please see the second main picture for more vehicles before purchase. | ✔Excellent Function: A faulty ignition coil & spark plug may result in engine misfire, rough engine idle, decrease in power, poor fuel economy etc. Every component either matches or improves on the OE design to ensure fast and easy installation with superior performance and reliability, to provide superior cold-start performance and a smoother running engine. | ✔High-quality: The spark plug is double iridium spark plug, have a much longer working life, can work 100000 kilometers, consistent and stable spark. The ignition coil made of premium quality materials, stainless-steel spring with internal ferrite noise suppressor prevents radiofrequencyinterference, advanced thermoplastic coilconnector ensures proper connectionand resists fractures causedby heat and thermai cycling, to better transfer the high voltage created by the engine's spark plug. | ✔OE# UF311+9807B-561BW. Replace# UF583 IC513, IC441, E1083, E341, E413, UF393, UF-393, 5C1382, C1417, 5C1631, 5C1682, C1382, C1423, C1574, 30520RRA007, 30520PRAA01, 099700-070, 30520-PMA-007, 30520-PNA-007. Package included: Ignition Coil Packs x4, Double Iridium Spark Plug x4. Not included instruction manual, easy to install. | ✔After-Sales Service: We offer 24 hours customer service and 1 year product service, If you are encounter product installation, product quality and other problems, please feel free to contact us.