{"product_id":"marsram-ignition-coil-and-double-iridium-spark-plug-kit-for-toyota-sienna-3-5l-2007-2015-6-pack-copper-windings","title":"Marsram Ignition Coil and Double-Iridium Spark Plug Kit for Toyota Sienna 3.5L (2007–2015) — 6-Pack Copper Windings","description":"\u003cp\u003e\u003cstrong\u003eMarsram ignition coils (UF487) paired with double-iridium spark plugs are a drop-in aftermarket kit engineered to restore consistent spark delivery and long-lasting electrode life for 3.5L V6 Toyotas and Lexuses.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eIf your Toyota Sienna (2007–2015) or a compatible V6 Toyota\/Lexus is showing rough idle, reduced throttle response, or decreased fuel efficiency, worn coils and plugs are common culprits. This kit bundles six high-conductivity ignition coils built with epoxy-resin housings and copper windings alongside six double-iridium spark plugs. Together they aim to improve combustion stability, resist corrosion, and provide a longer service interval compared with conventional plug and coil combinations.\u003c\/p\u003e\n\n\u003ch3\u003eHow do these ignition coils and double-iridium plugs improve engine performance?\u003c\/h3\u003e\n\u003cp\u003eThe UF487 coils provide fast, reliable spark transfer thanks to high-conductivity copper windings and heat-resistant housings, while the double-iridium plugs use iridium on both center and ground electrodes for stable arc and slower electrode wear. That combination supports more complete combustion, smoother idling, and steadier acceleration.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eEpoxy resin and high-strength plastic housings resist heat deformation\u003c\/li\u003e\n  \u003cli\u003eCopper interior windings increase ignition speed and conductivity\u003c\/li\u003e\n  \u003cli\u003eIridium electrodes on both poles extend service life and maintain spark quality\u003c\/li\u003e\n  \u003cli\u003eImproved combustion consistency can reduce misfires and rough running\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this kit fit my vehicle and replace OE part numbers?\u003c\/h3\u003e\n\u003cp\u003eThis Marsram kit is designed to fit many 3.5L V6 Toyota and Lexus models, including the 2007–2015 Sienna. It replaces common factory part numbers so installation is straightforward for compatible engines.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible examples: Toyota Sienna (2007–2015), Camry V6, Highlander V6, Avalon V6, RAV4 V6, Venza where applicable\u003c\/li\u003e\n  \u003cli\u003eReplaces ignition coil numbers: UF487, 90919-A2002, 90919-A2007 and related OE codes\u003c\/li\u003e\n  \u003cli\u003eSpark plug reference: 6619 (double-iridium design)\u003c\/li\u003e\n  \u003cli\u003eAlways verify fitment using your vehicle year, engine code, and the product fitment tool before ordering\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat materials and manufacturing standards are used in these parts?\u003c\/h3\u003e\n\u003cp\u003eMarsram builds the coils with heat-resistant outer materials and copper windings for conductivity, while the spark plugs use iridium on both electrodes for corrosion resistance and longevity. Production follows OE-style dimensions and quality checks to ensure compatibility and durability.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eOuter coil shell: epoxy resin and high-strength engineering plastic for heat protection\u003c\/li\u003e\n  \u003cli\u003eCoil interior: high-conductivity copper to boost ignition responsiveness\u003c\/li\u003e\n  \u003cli\u003eSpark plug electrodes: double iridium for extended life and stable arcs\u003c\/li\u003e\n  \u003cli\u003eManufacturing: tested to meet or exceed original-equipment design and fitment standards\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow easy is installation and what does the package include?\u003c\/h3\u003e\n\u003cp\u003eThe kit is supplied as a direct-replacement package intended for mechanics and DIYers familiar with coil-on-plug systems. Basic hand tools and a torque wrench are typically all that’s required for a standard installation procedure.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePackage contents: 6 ignition coils + 6 double-iridium spark plugs\u003c\/li\u003e\n  \u003cli\u003eDesigned for direct swap with OE coils and plugs—no special adapters\u003c\/li\u003e\n  \u003cli\u003eIncludes a 1-year warranty and seller support for fit or functional questions\u003c\/li\u003e\n  \u003cli\u003eRecommended: inspect wiring harness and boot seals during replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: This Marsram UF487 coil and double-iridium spark plug set is aimed at owners and technicians of 3.5L V6 Toyota and Lexus vehicles (including 2007–2015 Sienna) who want an OE-style replacement that prioritizes durability and consistent ignition. Choose this kit if you need a full-bank replacement to address misfires, restore driveability, or upgrade to longer-lived iridium electrodes while keeping stock fitment and installation simplicity.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does this kit fit my 2010 Toyota Sienna 3.5L?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes—this Marsram kit lists compatibility with 2007–2015 Sienna 3.5L, but confirm fit using your VIN or the seller's fitment tool before purchasing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What warranty covers these ignition coils and plugs?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Marsram includes a 1-year warranty; contact the seller promptly if you encounter defects or fitment issues.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Marsram","offers":[{"title":"Default Title","offer_id":48080744415390,"sku":"B0C61LNNZM","price":133.97,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/marsram-coil-and-plug-front-packaging.jpg?v=1785785301","url":"https:\/\/northtrailauto.ca\/products\/marsram-ignition-coil-and-double-iridium-spark-plug-kit-for-toyota-sienna-3-5l-2007-2015-6-pack-copper-windings","provider":"North Trail Auto","version":"1.0","type":"link"}