{"product_id":"denso-iridium-tt-spark-plug-itv20tt","title":"Denso 4719 Iridium Power Spark Plug","description":"\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0056\/9429\/2079\/files\/DENSO-main-logo-web.jpg?v=1780601203\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eDenso 4719 Iridium Power Spark Plug\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eUpgrade your ignition system with the Denso 4719 Iridium Power Spark Plug, a premium-performance spark plug engineered for reliable combustion, improved throttle response, and extended service life. Built with Denso's advanced Iridium Power technology, this spark plug features an ultra-fine iridium center electrode that delivers a powerful, consistent spark while requiring less firing voltage than conventional designs.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eIn marine applications, ignition components are subjected to constant heat, vibration, and heavy engine loads. The Denso 4719 is designed to thrive in these demanding conditions, helping maintain smooth starts, efficient fuel burn, crisp acceleration, and dependable power delivery throughout the boating season.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eWhether you're performing routine maintenance or seeking maximum ignition performance, this iridium spark plug offers the durability and efficiency serious boat owners demand.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eCommon Engine Applications\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe Denso 4719 Iridium Power Spark Plug is commonly used in select GM-based marine engines, including:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul data-spread=\"false\"\u003e\n\u003cli\u003e\u003cspan\u003eIndmar Monsoon 340\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eIndmar Assault 325\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eIndmar 5.7L MPI\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eIndmar 6.0L MPI\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePCM Excalibur 5.7L\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePCM ZR409\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eIlmor MV8 5.7L\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eIlmor MV8 6.0L\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMerCruiser 350 MAG MPI\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMerCruiser MX 6.2 MPI\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCrusader 5.7L MPI\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eVolvo Penta 5.7Gi\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eVolvo Penta 8.1Gi\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003eCommon Boat Fitments\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThese engines are frequently found in a variety of popular inboard wake, surf, and ski boats, including:\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4\u003e\u003cspan\u003eSupra\u003c\/span\u003e\u003c\/h4\u003e\n\u003cul data-spread=\"false\"\u003e\n\u003cli\u003e\u003cspan\u003eSupra Launch 21V\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSupra Launch 22SSV\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSupra Sunsport 22V\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSupra SA\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSupra SL\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003e\u003cspan\u003eMoomba\u003c\/span\u003e\u003c\/h4\u003e\n\u003cul data-spread=\"false\"\u003e\n\u003cli\u003e\u003cspan\u003eMoomba Mobius LSV\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMoomba Mobius XLV\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMoomba Mojo\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMoomba Craz\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMoomba Kaiyen\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003e\u003cspan\u003eMasterCraft\u003c\/span\u003e\u003c\/h4\u003e\n\u003cul data-spread=\"false\"\u003e\n\u003cli\u003e\u003cspan\u003eMasterCraft X-2\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMasterCraft X-15\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMasterCraft X-Star\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMasterCraft X-25\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMasterCraft ProStar\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003e\u003cspan\u003eMalibu\u003c\/span\u003e\u003c\/h4\u003e\n\u003cul data-spread=\"false\"\u003e\n\u003cli\u003e\u003cspan\u003eMalibu Wakesetter VLX\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMalibu Wakesetter 23 LSV\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMalibu Response TXi\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMalibu Sunsetter LXi\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003e\u003cspan\u003eNautique\u003c\/span\u003e\u003c\/h4\u003e\n\u003cul data-spread=\"false\"\u003e\n\u003cli\u003e\u003cspan\u003eSuper Air Nautique 210\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSuper Air Nautique 230\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSki Nautique 200\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eNautique 216\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003e\u003cspan\u003eCenturion\u003c\/span\u003e\u003c\/h4\u003e\n\u003cul data-spread=\"false\"\u003e\n\u003cli\u003e\u003cspan\u003eCenturion Elite V\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCenturion Avalanche\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCenturion Ri217\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCenturion Enzo SV230\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003eFeatures\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul data-spread=\"false\"\u003e\n\u003cli\u003e\u003cspan\u003eGenuine Denso 4719 Iridium Power spark plug\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eUltra-fine iridium center electrode design\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDelivers a strong, consistent spark\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eHelps improve throttle response and fuel efficiency\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSupports smooth idle and reliable starting\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eLong-lasting performance compared to standard spark plugs\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDesigned for demanding marine operating conditions\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003eBenefits of Denso Iridium Power Technology\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe fine-wire iridium electrode produces a concentrated spark that improves ignition efficiency and combustion quality. This advanced design helps reduce electrode wear, maintain performance over longer service intervals, and deliver the reliable operation needed for high-performance marine engines.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eFor owners of Supra, Moomba, MasterCraft, Malibu, Nautique, and Centurion boats equipped with GM-based marine engines, the Denso 4719 Iridium Power Spark Plug provides premium ignition performance and long-term reliability both on and off the water.\u003c\/span\u003e\u003c\/p\u003e","brand":"O'Reilly Auto Parts","offers":[{"title":"Default Title","offer_id":49230927921409,"sku":"4719","price":17.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0056\/9429\/2079\/files\/Screenshot2026-06-04154703.png?v=1780602431","url":"https:\/\/inboardpartshq.com\/products\/denso-iridium-tt-spark-plug-itv20tt","provider":"Inboard Parts HQ","version":"1.0","type":"link"}