{"product_id":"ngk-iridium-df8h-11b-spark-plug-nissan-370z-z34-vq37vhr","title":"NGK Iridium DF8H-11B Spark Plug - Nissan 370Z Z34 (VQ37VHR)","description":"\u003cstyle\u003e\n  .wl-listing { font-family: inherit; color: inherit; max-width: 100%; }\n  .wl-listing p { margin: 0 0 14px; line-height: 1.7; }\n  .wl-listing h2 { font-size: 1.1em; font-weight: 600; margin: 24px 0 10px; padding: 0; border: none; }\n  .wl-listing ul { margin: 0 0 16px; padding-left: 20px; }\n  .wl-listing ul li { margin-bottom: 6px; line-height: 1.6; }\n\n  .wl-listing .wl-lede { font-size: 1.05em; }\n\n  .wl-listing .wl-pull {\n    border-left: 3px solid #1a6ab5;\n    padding: 10px 16px;\n    margin: 18px 0;\n    font-weight: 500;\n    background: #f4f8fd;\n    border-radius: 0 4px 4px 0;\n  }\n\n  .wl-listing .wl-diagnostic {\n    background: #fff7ed;\n    border: 1px solid #fed7aa;\n    border-radius: 6px;\n    padding: 12px 16px;\n    margin: 18px 0;\n  }\n\n  .wl-listing .wl-diagnostic p {\n    margin: 4px 0;\n    font-size: 0.92em;\n  }\n\n  .wl-listing .wl-table {\n    width: 100%;\n    border-collapse: collapse;\n    margin: 12px 0 16px;\n    font-size: 0.88em;\n  }\n\n  .wl-listing .wl-table th {\n    background: #f8f9fb;\n    border: 1px solid #dde3ea;\n    padding: 7px 10px;\n    text-align: left;\n    font-weight: 600;\n    color: #374151;\n    font-size: 0.78em;\n    text-transform: uppercase;\n    letter-spacing: 0.05em;\n  }\n\n  .wl-listing .wl-table td {\n    border: 1px solid #dde3ea;\n    padding: 7px 10px;\n    color: #4b5563;\n  }\n\n  .wl-listing .wl-table tr:nth-child(even) td {\n    background: #f8f9fb;\n  }\n\n  .wl-listing .wl-fitment {\n    background: #f8f9fb;\n    border: 1px solid #dde3ea;\n    border-radius: 6px;\n    padding: 12px 16px;\n    margin: 12px 0;\n  }\n\n  .wl-listing .wl-closing {\n    background: #f0f7ee;\n    border: 1px solid #b6d9a8;\n    border-radius: 6px;\n    padding: 14px 18px;\n    margin-top: 20px;\n  }\n\n  .wl-listing .wl-divider {\n    border: none;\n    border-top: 1px solid #e5e7eb;\n    margin: 20px 0;\n  }\n\n  .wl-listing .wl-install {\n    display: flex;\n    gap: 12px;\n    flex-wrap: wrap;\n    margin: 12px 0 16px;\n  }\n\n  .wl-listing .wl-install-box {\n    flex: 1;\n    min-width: 120px;\n    background: #f8f9fb;\n    border: 1px solid #dde3ea;\n    border-radius: 6px;\n    padding: 10px 14px;\n  }\n\n  .wl-listing .wl-install-label {\n    font-size: 0.7em;\n    text-transform: uppercase;\n    letter-spacing: 0.08em;\n    color: #6b7280;\n    margin: 0 0 3px;\n    font-weight: 600;\n  }\n\n  .wl-listing .wl-install-val {\n    font-size: 0.92em;\n    font-weight: 600;\n    color: #111;\n    margin: 0;\n  }\n\n  .wl-listing .wl-badge-row {\n    display: flex;\n    flex-wrap: wrap;\n    gap: 8px;\n    margin: 0 0 18px;\n  }\n\n  .wl-listing .wl-badge {\n    display: inline-block;\n    font-size: 0.75em;\n    font-weight: 600;\n    padding: 3px 10px;\n    border-radius: 20px;\n    letter-spacing: 0.04em;\n  }\n\n  .wl-listing .wl-badge-blue {\n    background: #E6F1FB;\n    color: #0C447C;\n    border: 1px solid #85B7EB;\n  }\n\n  .wl-listing .wl-badge-green {\n    background: #EAF3DE;\n    color: #27500A;\n    border: 1px solid #97C459;\n  }\n\u003c\/style\u003e\n\u003cdiv class=\"wl-listing\"\u003e\n\u003cdiv class=\"wl-badge-row\"\u003e\n\u003cspan class=\"wl-badge wl-badge-blue\"\u003eDF8H-11B · NGK\u003c\/span\u003e \u003cspan class=\"wl-badge wl-badge-green\"\u003eIridium Spark Plug\u003c\/span\u003e \u003cspan class=\"wl-badge wl-badge-blue\"\u003eOEM Specification\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cp class=\"wl-lede\"\u003e\u003cstrong\u003e\u003ca href=\"https:\/\/automotivesuperstore.com.au\/ngk\" title=\"NGK\" aria-label=\"NGK\"\u003e\u003cimg title=\"NGK\" alt=\"NGK\" src=\"https:\/\/automotivesuperstore.com.au\/media\/amasty\/shopby\/option_images\/NGK.jpg\" width=\"150\" height=\"150\"\u003e\u003c\/a\u003e\u003cbr\u003eNGK Iridium DF8H-11B Spark Plug – Nissan 370Z Z34\u003c\/strong\u003e\u003cbr\u003eVQ37VHR · Set of 6 Required (Sold Individually)\u003cbr\u003e\u003cbr\u003eThe NGK DF8H-11B is a high-performance iridium spark plug designed for modern Nissan VQ37VHR engines, delivering consistent ignition stability, improved combustion efficiency and long service life under high thermal load conditions. \u003cbr\u003e\u003cbr\u003e\u003cstrong\u003e\u003cem\u003eWhen diagnosing ignition-related symptoms such as misfires, rough idle or hesitation, spark plugs are a commonly inspected component within the system.\u003c\/em\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv class=\"wl-pull\"\u003eIridium fine-wire construction helps maintain a consistent spark under heat and load, improving ignition reliability and combustion stability compared to conventional electrode designs.\u003c\/div\u003e\n\u003cdiv class=\"wl-diagnostic\"\u003e\n\u003cp\u003e\u003cstrong\u003eSymptoms that may be associated with worn spark plugs:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e• Rough or unstable idle\u003c\/p\u003e\n\u003cp\u003e• Misfires under load or acceleration\u003c\/p\u003e\n\u003cp\u003e• Poor fuel efficiency\u003c\/p\u003e\n\u003cp\u003e• Hesitation or sluggish response\u003c\/p\u003e\n\u003cp\u003e• Hard starting conditions\u003c\/p\u003e\n\u003c\/div\u003e\n\u003chr class=\"wl-divider\"\u003e\n\u003ch2\u003eProduct specifications\u003c\/h2\u003e\n\u003ctable class=\"wl-table\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart number\u003c\/td\u003e\n\u003ctd\u003eDF8H-11B\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eNGK\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eIridium spark plug\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEngine\u003c\/td\u003e\n\u003ctd\u003eVQ37VHR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRequired quantity\u003c\/td\u003e\n\u003ctd\u003e6 plugs per vehicle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSold as\u003c\/td\u003e\n\u003ctd\u003eEach\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr class=\"wl-divider\"\u003e\n\u003ch2\u003eWhy this plug\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eIridium fine-wire electrode for strong and consistent ignition\u003c\/li\u003e\n\u003cli\u003eDesigned for OEM-equivalent performance in VQ37VHR engines\u003c\/li\u003e\n\u003cli\u003eImproved combustion stability under load\u003c\/li\u003e\n\u003cli\u003eLong service life compared to standard nickel plugs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr class=\"wl-divider\"\u003e\n\u003ch2\u003eInstallation\u003c\/h2\u003e\n\u003cdiv class=\"wl-install\"\u003e\n\u003cdiv class=\"wl-install-box\"\u003e\n\u003cp class=\"wl-install-label\"\u003eDifficulty\u003c\/p\u003e\n\u003cp class=\"wl-install-val\"\u003eIntermediate\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"wl-install-box\"\u003e\n\u003cp class=\"wl-install-label\"\u003eTools required\u003c\/p\u003e\n\u003cp class=\"wl-install-val\"\u003eSpark plug socket + torque wrench\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003chr class=\"wl-divider\"\u003e\n\u003ch2\u003eFitment\u003c\/h2\u003e\n\u003cdiv class=\"wl-fitment\"\u003e\n\u003cp\u003eNissan 370Z Z34 · 3.7L VQ37VHR\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp style=\"font-size: 0.88em; color: #6b7280; margin-top: 6px;\"\u003eAlways confirm fitment before ordering. Contact us if unsure.\u003c\/p\u003e\n\u003cdiv class=\"wl-closing\"\u003e\n\u003cp\u003e\u003cstrong\u003eRecommendation:\u003c\/strong\u003e Spark plugs are typically replaced as a full set of 6 to maintain balanced ignition performance across all cylinders.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Zend It Auto Parts","offers":[{"title":"Default Title","offer_id":49095480803556,"sku":"DF8H-11B","price":55.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/2679\/0884\/files\/DF8H-11B.jpg?v=1780820781","url":"https:\/\/zenditautoparts.com\/products\/ngk-iridium-df8h-11b-spark-plug-nissan-370z-z34-vq37vhr","provider":"Zend It Auto Parts","version":"1.0","type":"link"}