{"product_id":"denso-5356","title":"Denso Required Ignition Voltage Reduced Spark Plug 5356 - Iridium Power","description":"\u003ch2\u003eDenso 5356 Required ignition voltage reduced\u003c\/h2\u003e\u003cp\u003eIridium Power® best demonstrates its performance improvement during acceleration. The world’s smallest center electrode and specially shaped ground electrode deliver maximum spark energy while withstanding temperatures greater than 4000 Degree Fahrenheit. These features combine to achieve higher ignitability and require lower spark voltage than ever before. As a result, acceleration improves in comparison with normal plugs. To increase ignitability, the important point is to let the flame kernel produced by the spark to grow unobstructed. Normally, this can be accomplished by widening the spark gap. However, this causes spark voltage to increase, which has the opposite effect. Iridium Power uses DENSO’s patented U-Groove ground electrode to achieve maximum ignitability while minimizing required voltage.\u003c\/p\u003e\u003ch3\u003eFeatures \u0026amp; Benefits\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eTapered cut, u-groove ground electrode\u003c\/li\u003e\n\u003cli\u003ePatented 360-degree laser welding assembly process\u003c\/li\u003e\n\u003cli\u003eRequired ignition voltage reduced\u003c\/li\u003e\n\u003cli\u003eUnsurpassed center electrode durability\u003c\/li\u003e\n\u003cli\u003eAvailable for many performance and power sports applications, including corvette, viper, and harley-davidson\u003c\/li\u003e\n\u003cli\u003eImproved spark ignition for maximum combustion, even with lean air-fuel mixtures\u003c\/li\u003e\n\u003cli\u003e100 percent pre-fired to assure the highest quality possible\u003c\/li\u003e\n\u003cli\u003ePurified alumina powder insulator provides exceptional strength and thermal conductivity\u003c\/li\u003e\n\u003cli\u003eCopper-glass seal bonds center electrode and insulator for a gas-tight seal\u003c\/li\u003e\n\u003cli\u003eLimited 1 year warranty\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eRequired ignition voltage reduced\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eTapered cut, u-groove ground electrode\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor\u003c\/td\u003e\n\u003ctd\u003eCopper\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.5 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e4.03 x 3.4 x 0.82 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eDenso\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer Part Number\u003c\/td\u003e\n\u003ctd\u003e5356\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUPC\u003c\/td\u003e\n\u003ctd\u003e042511053564\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003cstyle\u003e\n.product-faq { margin: 2rem 0; }\n.product-faq__title { font-size: 1.25rem; margin-bottom: 1rem; }\n.faq-item { border: 1px solid #ddd; border-radius: 4px; margin-bottom: 0.5rem; }\n.faq-item__question { padding: 0.75rem 1rem; font-weight: 600; cursor: pointer; }\n.faq-item__answer { padding: 0 1rem 0.75rem; }\ndetails.faq-item \u003e summary { list-style: none; }\ndetails.faq-item \u003e summary::-webkit-details-marker { display: none; }\n.related-items-table { width: 100%; border-collapse: collapse; margin: 1rem 0; }\n.related-items-table th, .related-items-table td { border: 1px solid #ddd; padding: 0.5rem; text-align: left; vertical-align: top; }\n.related-items-table th { background: #f7f7f7; }\n\u003c\/style\u003e\u003csection class=\"product-faq\" aria-label=\"Frequently asked questions\"\u003e\u003ch2 class=\"product-faq__title\"\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails class=\"faq-item\"\u003e\u003csummary class=\"faq-item__question\"\u003eHow do I verify fitment before ordering?\u003c\/summary\u003e\u003cdiv class=\"faq-item__answer\"\u003e\u003cp\u003eCompare manufacturer part number 5356 against your existing part and your vehicle or equipment. Contact us with your make, model, and year if you need help confirming compatibility.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails class=\"faq-item\"\u003e\u003csummary class=\"faq-item__question\"\u003eWhat color is this tapered cut, u-groove ground electrode?\u003c\/summary\u003e\u003cdiv class=\"faq-item__answer\"\u003e\u003cp\u003eThis is the Copper variant of the Required ignition voltage reduced from Denso.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails class=\"faq-item\"\u003e\u003csummary class=\"faq-item__question\"\u003eWhat stands out about this tapered cut, u-groove ground electrode?\u003c\/summary\u003e\u003cdiv class=\"faq-item__answer\"\u003e\u003cp\u003eKey details include unsurpassed center electrode durability. Review the full feature list and specifications on this page for complete details.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003c\/section\u003e\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Product\",\"name\":\"Denso 5356 Tapered cut, u-groove ground electrode\",\"description\":\"Iridium Power® best demonstrates its performance improvement during acceleration. The world’s smallest center electrode and specially shaped ground electrode deliver maximum spark energy while withstanding temperatures greater than 4000 Degree Fahrenheit. These features combine to achieve higher ignitability and require lower spark voltage than ever before. As a result, acceleration improves in comparison with normal plugs. To increase ignitability, the important point is to let the flame kernel produced by the spark to grow unobstructed. Normally, this can be accomplished by widening the spark gap. 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