{"product_id":"4339-spark-plug-dcpr8e","title":"NGK DCPR8E SPARK PLUG - 4339","description":"\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0056\/9429\/2079\/files\/ngk_logo_1.png?v=1780608867\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ch2\u003eNGK DCPR8E Spark Plug – 4339\u003c\/h2\u003e\n\u003cp\u003eThe NGK DCPR8E Spark Plug, stock number 4339, is a proven ignition replacement for a wide range of Sea-Doo personal watercraft powered by BRP Rotax 4-TEC and ACE engines. Designed for dependable spark delivery in demanding marine conditions, it helps maintain quick starting, smooth idle quality, responsive acceleration, and consistent performance throughout the RPM range.\u003c\/p\u003e\n\u003cp\u003eBuilt with NGK's copper-core electrode technology, the DCPR8E efficiently transfers heat away from the firing tip while maintaining reliable ignition under changing engine loads. Its resistor construction helps suppress electrical interference, an important feature on modern watercraft equipped with electronic engine management, digital gauges, and other onboard systems.\u003c\/p\u003e\n\u003cp\u003eWorn or fouled plugs can cause hard starting, hesitation, rough running, misfires, and reduced power. Replacing them as part of routine Sea-Doo maintenance helps keep the engine performing as designed and reduces the chance of ignition-related problems on the water.\u003c\/p\u003e\n\u003ch3\u003eSpark Plug Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eManufacturer: NGK\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePart Number: DCPR8E\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eNGK Stock Number: 4339\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eType: Standard resistor spark plug\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHeat Range: 8\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eThread Diameter: 12 mm\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eThread Reach: 19 mm\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHex Size: 16 mm\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eElectrode Core: Copper\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eStandard Spark Gap: 0.8 mm on many 1503 applications\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSold Individually\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCommon BRP Rotax Engine Applications\u003c\/h3\u003e\n\u003cp\u003eThe NGK DCPR8E \/ 4339 is used in select Sea-Doo engines, including:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eBRP Rotax 1503 4-TEC\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eRotax 1503 NA\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eRotax 1503 NA iTC\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eRotax 1503 Supercharged\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eRotax 1503 SCIC\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eRotax 1503 SCIC iTC\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eRotax 1503 HO ACE\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSelect Rotax 1630 ACE applications\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCommon Sea-Doo Model Applications\u003c\/h3\u003e\n\u003cp\u003eDepending on year and engine configuration, the NGK 4339 is found in Sea-Doo models such as:\u003c\/p\u003e\n\u003ch4\u003eSea-Doo GTI\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eSea-Doo GTI 130\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSea-Doo GTI 155\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSea-Doo GTI SE 130\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSea-Doo GTI SE 155\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSea-Doo GTI Limited 155\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eSea-Doo GTX\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eSea-Doo GTX 155\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSea-Doo GTX 215\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSea-Doo GTX Limited\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSea-Doo GTX 230\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eSea-Doo RXP\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eSea-Doo RXP 155\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSea-Doo RXP 215\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSelect RXP-X applications\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eSea-Doo RXT\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eSea-Doo RXT 215\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSea-Doo RXT 230\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSelect RXT-X applications\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eSea-Doo Wake\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eSea-Doo Wake 155\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSea-Doo Wake Pro 215\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSelect Sea-Doo Wake Pro models\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eSea-Doo FishPro\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eSea-Doo FishPro Sport 170\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSea-Doo FishPro Trophy 170\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAdditional applications include select Sea-Doo models equipped with compatible Rotax 1503 and 1630 ACE engine packages.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eGenuine NGK DCPR8E spark plug\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eNGK stock number 4339\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eProven application for Sea-Doo personal watercraft\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCompatible with select Rotax 1503 4-TEC and 1630 ACE engines\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCopper-core electrode provides efficient heat dissipation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eResistor construction helps reduce electronic interference\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePromotes reliable starting and smooth acceleration\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHelps maintain consistent combustion under varying engine loads\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eExcellent choice for seasonal maintenance and tune-ups\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eBuilt for Sea-Doo 4-TEC Performance\u003c\/h3\u003e\n\u003cp\u003eSea-Doo 4-TEC engines depend on proper spark plug condition to deliver the smooth, responsive performance these watercraft are known for. Heat cycles, fuel deposits, and normal electrode wear eventually reduce ignition efficiency, making regular inspection and replacement an important part of preventative maintenance.\u003c\/p\u003e\n\u003cp\u003eFor compatible Sea-Doo GTI, GTX, RXP, RXT, Wake, Wake Pro, and FishPro models, the NGK DCPR8E 4339 provides dependable NGK quality and proven marine performance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFitment Note:\u003c\/strong\u003e Sea-Doo has used several engine families and spark plug specifications within the same model names. Spark gap can also vary by engine application. Always verify \u003cstrong\u003eNGK DCPR8E \/ stock #4339\u003c\/strong\u003e against your Sea-Doo model year, Rotax engine type, and original spark plug specification before ordering or setting the gap.\u003c\/p\u003e","brand":"Land 'N' Sea","offers":[{"title":"Default Title","offer_id":50254706442497,"sku":"41-4339","price":7.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0056\/9429\/2079\/files\/Screenshot2026-08-29082036.png?v=1788006046","url":"https:\/\/inboardpartshq.com\/products\/4339-spark-plug-dcpr8e","provider":"Inboard Parts HQ","version":"1.0","type":"link"}