{"product_id":"ignition-coil-pack-spark-plugs-replacement-for-4-0-and-3-5-v6","title":"Ignition Coil Pack Spark Plugs Replacement for 4.0 and 3.5 V6","description":"\u003cp\u003eIn this review the reviewer looks at the NPAUTO set of six ignition coils and six pre-gapped spark plugs aimed at V6 Nissan and Infiniti owners. The bottom line: this kit is for drivers who need a direct-fit replacement to cure misfires, rough idle, or poor fuel economy without hunting for individual parts. It installs like OEM units on compatible 4.0L and 3.5L engines and is presented as a complete coil-and-plug refresh to restore smooth starting and steady power.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete kit:\u003c\/strong\u003e Includes 6 ignition coils and 6 pre-gapped spark plugs, allowing a full-bank replacement in one purchase for V6 engines.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide vehicle coverage:\u003c\/strong\u003e Fits a long list of Nissan, Infiniti and Suzuki models with 4.0L or 3.5L V6 engines, reducing compatibility guessing when the chart matches.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM-style fit:\u003c\/strong\u003e Coils match common OEM part numbers such as UF349 and others, so they seat and plug in with the same routing and connector style.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImproves drivability:\u003c\/strong\u003e Replacing both coils and plugs together addresses common symptoms like engine misfire, hard starts, rough idle and reduced power.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuality control:\u003c\/strong\u003e NPAUTO states the coils and plugs are produced to meet or exceed OEM standards, intended to deliver consistent functionality.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupport and warranty:\u003c\/strong\u003e The package is backed by a two-year warranty and customer service for fitment or defect questions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThe kit is best for owners of compatible Nissan Frontier, Pathfinder, Xterra, Altima, Maxima, Murano, Quest, NV series vans and related Infiniti and Suzuki models who are experiencing misfires, rough idle, or poor fuel economy and want a straightforward, full-bank replacement. Mechanics and DIYers who prefer replacing all coils and plugs at once will appreciate the convenience of a matched set.\u003c\/p\u003e\n\u003cp\u003eIt is not aimed at drivers with engines outside the listed 3.5L or 4.0L V6 fitment or those who require individual aftermarket performance coils or exotic spark plug types. Always check the listing compatibility chart before buying to confirm correct part numbers.\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\u003eFixes cylinder misfires and restores smooth idle when fit is correct.\u003c\/li\u003e\n\u003cli\u003eParts match OEM numbers, helping ensure correct fit and wiring compatibility.\u003c\/li\u003e\n\u003cli\u003eGood value for a full set compared with buying coils and plugs separately.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eOnly suitable for the specific 3.5L and 4.0L V6 models listed, so compatibility must be checked.\u003c\/li\u003e\n\u003cli\u003eSome buyers may prefer OEM-branded parts or different plug types for high-performance tuning.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eNPAUTO\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage contents\u003c\/td\u003e\n\u003ctd\u003e6 ignition coils and 6 pre-gapped spark plugs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible engines\u003c\/td\u003e\n\u003ctd\u003eV6 4.0L and V6 3.5L models listed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplicable vehicles\u003c\/td\u003e\n\u003ctd\u003eNissan Frontier, Pathfinder, Xterra, Altima, Maxima, Murano, Quest, NV series; select Infiniti and Suzuki models\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOEM part numbers matched\u003c\/td\u003e\n\u003ctd\u003eUF349, 224338J115, 224488J111 and related numbers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e2-year warranty and customer service\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe NPAUTO ignition coil and spark plug kit is a practical, value-oriented solution for owners of the supported Nissan and related V6 models who need to resolve misfires and restore drivability. When the compatibility chart confirms fit, this matched set simplifies repair and delivers OEM-style fitment and reliable function, making it a sensible buy for routine ignition system refreshes.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWill this kit fix engine misfires?\u003c\/strong\u003e\u003cbr\u003eYes, replacing failed coils and worn spark plugs with this matching kit often resolves misfires, hard starting and rough idle when the parts are compatible with the vehicle.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the set fit my 2008 Nissan Xterra 4.0L?\u003c\/strong\u003e\u003cbr\u003eIf your Xterra is the 4.0L V6 model listed in the compatibility chart, this set is designed to fit; confirm the chart before purchase.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAre the spark plugs pre-gapped?\u003c\/strong\u003e\u003cbr\u003eYes, the package includes six pre-gapped spark plugs ready for installation in the specified engines.\u003c\/p\u003e","brand":"NPAUTO","offers":[{"title":"Default Title","offer_id":48201152430299,"sku":"B0B8Z4DNT1","price":89.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/619qnw0d6yL._AC_SL1500.jpg?v=1769812555","url":"https:\/\/gearmusthave.com\/products\/ignition-coil-pack-spark-plugs-replacement-for-4-0-and-3-5-v6","provider":"GearMustHave","version":"1.0","type":"link"}