{"product_id":"uf550-ignition-coil-pack-and-1406-spark-plugs-set-of-6-reliable-v6","title":"UF550 Ignition Coil Pack and 1406 Spark Plugs Set of 6 - Reliable V6","description":"\u003cp\u003eIn this review of the UF550 coil pack and 1406 spark plug kit, the bottom line is simple: this set is for V6 Nissan and Infiniti owners who need a dependable, full ignition replacement at a reasonable price. The reviewer found the kit addresses common ignition symptoms such as misfiring, stalling and rough idle by delivering stable high-voltage output across the RPM range. The package includes six coil packs and six spark plugs, making it a straightforward swap for engines that use the UF550\/C1670 coils and 1406 spark plugs.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMultivehicle Compatibility:\u003c\/strong\u003e Fits a broad range of Nissan and Infiniti V6 models, simplifying parts selection for owners of Altima, Maxima, Murano, Pathfinder, 350Z and several Infiniti models.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable Coil Construction:\u003c\/strong\u003e Coil packs use silicon steel, high-pressure rubber sleeves and Japan-imported epoxy resin to resist cracking and short-circuiting under heat and vibration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-quality Spark Plugs:\u003c\/strong\u003e Iridium electrodes and CNC machined metal parts on the 1406 plugs offer improved ignition performance, faster start and smoother acceleration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOE-fit Standards:\u003c\/strong\u003e Coils and plugs meet or exceed original equipment specifications for form, fit and function, reducing the chance of fitment surprises during installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTested Reliability:\u003c\/strong\u003e Each component is subjected to strict quality tests to ensure stable high-voltage output and consistent performance throughout engine speeds.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete Kit:\u003c\/strong\u003e Includes six ignition coils, six spark plugs and a manual, making it a one-stop replacement for six-cylinder engines.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis kit is best for DIY mechanics and professional technicians working on 3.5L V6 Nissan and Infiniti engines that accept UF550\/C1670 coils and 1406 spark plugs. It is particularly useful when multiple cylinders show symptoms like stuttering, rough idle or reduced fuel economy and a bank replacement makes sense.\u003c\/p\u003e\n\u003cp\u003eDrivers who prefer OEM-branded parts or need a single-cylinder replacement rather than a full set may want to look elsewhere. Also check the vehicle fitment images or detail page to confirm compatibility before purchasing to avoid returns.\u003c\/p\u003e\n\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eImproved engine smoothness and resolved misfire-related stuttering in real-world use.\u003c\/li\u003e\n\u003cli\u003eDurable materials in both coils and plugs that aim to extend service life under heat and vibration.\u003c\/li\u003e\n\u003cli\u003eComplete six-cylinder kit offers convenience and value compared with buying parts individually.\u003c\/li\u003e\n\u003cli\u003eSpark plugs with iridium electrodes provide reliable ignition and better throttle response.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFitment requires careful verification against vehicle year and engine; not every model year is supported.\u003c\/li\u003e\n\u003cli\u003eSome buyers who need only a single coil or plug may find a full six-pack unnecessary.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eKit contents\u003c\/td\u003e\n\u003ctd\u003e6 ignition coils, 6 spark plugs, 1 manual\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoil OE numbers\u003c\/td\u003e\n\u003ctd\u003eUF550, C1670 and listed equivalents such as 22448-JA10C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpark plug OE number\u003c\/td\u003e\n\u003ctd\u003e1406 (also referenced as 22401-1LA1C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpark plug material\u003c\/td\u003e\n\u003ctd\u003eIridium electrode with ceramic insulator\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoil materials\u003c\/td\u003e\n\u003ctd\u003eSilicon steel, rubber sleeve, Japan epoxy, Germany enameled wire\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible engines\u003c\/td\u003e\n\u003ctd\u003e3.5L V6 Nissan and Infiniti models listed in product details\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eFor owners of compatible Nissan and Infiniti V6s who want a full ignition refresh, this UF550 coil and 1406 spark plug set is a practical, cost-effective choice. The kit combines durable coil construction and iridium spark plugs that address misfires and poor idle while offering the convenience of a complete six-cylinder replacement and good overall value.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWill this kit fit my vehicle?\u003c\/strong\u003e\u003cbr\u003eCheck the detailed fitment images and model-year list; it is designed for a range of 3.5L V6 Nissan and Infiniti models but confirm against your vehicle before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow many items are included?\u003c\/strong\u003e\u003cbr\u003eThe package contains six ignition coil packs, six spark plugs and one manual for a full V6 replacement.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo the parts meet OEM standards?\u003c\/strong\u003e\u003cbr\u003eYes, the coils and plugs are made to meet or exceed OE specifications for form, fit and function and are tested for stable high-voltage output.\u003c\/p\u003e","brand":"SYKRSS","offers":[{"title":"Default Title","offer_id":48240865247451,"sku":"B0D41SVSZZ","price":79.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/71pjFSRtYeL._AC_SL1500.jpg?v=1770960267","url":"https:\/\/gearmusthave.com\/products\/uf550-ignition-coil-pack-and-1406-spark-plugs-set-of-6-reliable-v6","provider":"GearMustHave","version":"1.0","type":"link"}