{"product_id":"a-premium-ignition-coil-pack-and-iridium-spark-plug-kit-for-subaru-h4-2013-2016-set-of-4-bolt-on-coils-pre-gapped-iridium-plu","title":"A-Premium Ignition Coil Pack and Iridium Spark Plug Kit for Subaru H4 2013–2016 — Set of 4, Bolt-On Coils \u0026 Pre-Gapped Iridium Plu","description":"\u003cp\u003e\u003cstrong\u003eA-Premium’s set of four ignition coil packs paired with four iridium spark plugs is a complete replacement kit engineered for select Subaru H4 engines from 2013–2016.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis kit combines direct-fit ignition coils and long-life iridium-tipped spark plugs to restore reliable spark delivery, smoother idling, and consistent starting for compatible Subaru Forester, Impreza, Legacy, Outback and XV Crosstrek models. Each coil is a bolt-on blade-terminal design that mounts to the valve cover, and the iridium-plus-nickel plugs come pre-gapped for typical OEM-style installations. A-Premium backs this assembly with a one-year unlimited-mileage guarantee to give installers confidence when replacing worn ignition components.\u003c\/p\u003e\n\n\u003ch3\u003eHow will these ignition coils and iridium plugs affect everyday starting and idle?\u003c\/h3\u003e\n\u003cp\u003eReplacing old coils and degraded plugs helps re-establish a strong, even spark at each cylinder. You should notice more consistent starts, steadier idle behavior, and fewer misfires that can occur with worn ignition parts.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCoil terminal quantity: 3 with blade-type terminals for reliable electrical contact.\u003c\/li\u003e\n  \u003cli\u003eMount type: bolt-on, installs to valve cover for OEM-style fitment.\u003c\/li\u003e\n  \u003cli\u003eSpark plug material: durable iridium on the center electrode for longer life.\u003c\/li\u003e\n  \u003cli\u003ePre-set gap: 1.0–1.1 inches (installation-ready range).\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this kit fit my Subaru model and how do I confirm fitment?\u003c\/h3\u003e\n\u003cp\u003eThe set is made for several Subaru H4 engines from 2013 through 2016; compatibility covers many Forester, Impreza, Legacy, Outback and XV Crosstrek gasoline models. Verify part compatibility by matching your engine code and the provided reference numbers before purchase.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible models include: Forester 2014–2016 (H4 2.5L), Impreza 2013–2015 (H4 2.0L), Legacy\/Outback 2013–2014 (H4 2.5L), XV Crosstrek 2013–2014 (H4 2.0L).\u003c\/li\u003e\n  \u003cli\u003eReference numbers: SU003-00417, FA20, FK0438, UF-724 \/ UF724, UF-710 \/ UF710.\u003c\/li\u003e\n  \u003cli\u003eThread diameter: 12 mm—confirm against your vehicle’s OEM plug thread size.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are the installation details and torque specs I should follow?\u003c\/h3\u003e\n\u003cp\u003eEach ignition coil bolts to the valve cover and connects with a blade-style terminal for secure electrical contact. Use the recommended installation torque for the spark plugs and take care to seat the coil mounts properly to avoid vibration or poor contact.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSpark plug installation torque: 15–20 N·m (follow a torque wrench for accuracy).\u003c\/li\u003e\n  \u003cli\u003eCoil mounting: bolt-on type to valve cover—ensure wiring harness clips are aligned.\u003c\/li\u003e\n  \u003cli\u003eGap specification: 1.0–1.1 inches pre-set for standard H4 applications.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy choose iridium plugs paired with new coils over replacing only one component?\u003c\/h3\u003e\n\u003cp\u003eIridium plugs have a finer, harder center electrode that resists wear longer than conventional nickel-only plugs; pairing them with fresh coils ensures the ignition system performs as a matched set. Replacing both parts at once reduces the chance of premature issues caused by a new coil driving an old, worn plug or vice versa.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eIridium central electrode extends service life and preserves consistent spark intensity.\u003c\/li\u003e\n  \u003cli\u003eNew coils restore proper voltage delivery to each cylinder under load.\u003c\/li\u003e\n  \u003cli\u003eBundled kit reduces diagnostic guesswork and ensures matched replacement parts.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: This A-Premium kit is for Subaru owners and independent technicians who need a direct-fit ignition coil and spark plug replacement for 2013–2016 H4 engines. It suits drivers seeking a reliable, longer-lasting plug material (iridium) combined with OEM-style coil fitment and clear reference numbers for parts matching, plus a one-year unlimited-mileage guarantee for peace of mind.\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 include four coils and four spark plugs?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — the A-Premium kit contains four ignition coil packs and four iridium spark plugs for a full bank replacement.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What warranty does A-Premium provide?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: A-Premium offers a one-year unlimited-mileage guarantee on these ignition coils and spark plugs.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"A-Premium","offers":[{"title":"Default Title","offer_id":48080887644318,"sku":"B0BYC1TS9D","price":105.48,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/a-premium-coil-pack-front-view.jpg?v=1785791661","url":"https:\/\/northtrailauto.ca\/products\/a-premium-ignition-coil-pack-and-iridium-spark-plug-kit-for-subaru-h4-2013-2016-set-of-4-bolt-on-coils-pre-gapped-iridium-plu","provider":"North Trail Auto","version":"1.0","type":"link"}