{"product_id":"oem-uf620-ignition-coils-4504-double-iridium-spark-plug-set","title":"OEM UF620 Ignition Coils \u0026 4504 Double Iridium Spark Plug Set","description":"\u003cp\u003eIn this review of the OEM UF620 ignition coil and 4504 double iridium spark plug set, the bottom line is simple: this kit is aimed at owners of specific compact GM models who need a dependable replacement that restores ignition performance and improves starting and fuel economy. The reviewer found the parts engineered to match OE specifications, with iridium plugs promising longer life and coils built with high temperature epoxy and precision winding to reduce misfires and rough idle.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eVehicle Fitment:\u003c\/strong\u003e The set fits 2013-2017 Sonic 1.8L, 2013-2015 Cruze 1.8L and 2010 G3, so buyers can expect direct compatibility with those engines.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIridium Spark Plug:\u003c\/strong\u003e The double iridium central electrode is designed to extend spark plug life and support more stable idle speed compared with standard plugs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImproved Ignition Response:\u003c\/strong\u003e The coils are engineered to improve ignition timing and reduce crank time, helping faster starts and fewer misfires.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable Construction:\u003c\/strong\u003e Epoxy resin filling rated to 140 C and high quality enameled copper winding aim to resist corrosion and maintain insulation under heat.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOE-Level Fit:\u003c\/strong\u003e KAX matched or improved OE design for components so installation is straightforward and intended to function like the original parts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete Replacement Kit:\u003c\/strong\u003e The package includes 1 UF620 ignition coil and 4 4504 spark plugs, making it a one-stop repair for the ignition side of the engine.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWho It's For\u003c\/h2\u003e\u003cp\u003eThis kit is best for DIY mechanics and independent shops servicing the listed GM compacts who want an all-in-one ignition replacement that mirrors OE design. It suits drivers experiencing hard starts, long crank times, misfires, inconsistent shifts related to ignition issues, or declining fuel economy who want to address ignition coils and spark plugs together.\u003c\/p\u003e\u003cp\u003eIt is not aimed at vehicles outside the stated fitment or owners seeking performance tuning parts for higher output; those customers should look for performance-specific coils or custom plug gaps. Also, if a vehicle has unrelated electrical faults, this kit will not resolve wiring or ECU problems.\u003c\/p\u003e\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eDirect-fit design for the listed models reduces installation time and fitment uncertainty.\u003c\/li\u003e\n\u003cli\u003eIridium plugs offer longer life and help stabilize idle and starting performance.\u003c\/li\u003e\n\u003cli\u003eCoils built with high temperature epoxy and precise winding aim to improve reliability under heat.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFitment is limited to specific 1.8L models, so it is not a universal replacement.\u003c\/li\u003e\n\u003cli\u003eThe kit addresses ignition components only and will not fix non-ignition engine issues.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eKAX\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncludes\u003c\/td\u003e\n\u003ctd\u003e1 UF620 ignition coil and 4 4504 double iridium spark plugs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVehicle Fitment\u003c\/td\u003e\n\u003ctd\u003e2013-2017 Sonic 1.8L; 2013-2015 Cruze 1.8L; 2010 G3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpark Plug Electrode\u003c\/td\u003e\n\u003ctd\u003eDouble iridium central electrode\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoil Construction\u003c\/td\u003e\n\u003ctd\u003eEpoxy resin filling and polyurethane enamel copper winding\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePerformance Focus\u003c\/td\u003e\n\u003ctd\u003eReduced misfires, faster starts, improved fuel efficiency\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eOur Verdict\u003c\/h2\u003e\u003cp\u003eThis UF620 ignition coil and 4504 double iridium spark plug set is a practical, value-oriented replacement for owners of the listed GM 1.8L models. It pairs longer-lasting iridium plugs with coils built to OE-like standards, making it a sensible choice to restore starting reliability, reduce misfires and improve fuel economy without unnecessary extras.\u003c\/p\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eWill this kit fit my Cruze or Sonic?\u003c\/strong\u003e\u003cbr\u003eThe set is specified for 2013-2017 Sonic 1.8L, 2013-2015 Cruze 1.8L and 2010 G3; confirm engine size and year before purchasing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo the iridium plugs need a different gap?\u003c\/strong\u003e\u003cbr\u003eIridium plugs are designed to perform with OE gaps; follow the vehicle manual or the plug manufacturer guidance for any gap checks.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill replacing these parts fix engine misfires?\u003c\/strong\u003e\u003cbr\u003eIf misfires are caused by worn coils or fouled spark plugs, this kit should correct them, but it will not resolve misfires from fuel or sensor issues.\u003c\/p\u003e","brand":"KAX","offers":[{"title":"Default Title","offer_id":48201543680219,"sku":"B0D8VS56ZY","price":72.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/71GLTP34zjL._AC_SL1500.jpg?v=1770321194","url":"https:\/\/gearmusthave.com\/products\/oem-uf620-ignition-coils-4504-double-iridium-spark-plug-set","provider":"GearMustHave","version":"1.0","type":"link"}