{"product_id":"ngk-3923-spark-plug-plugs-bpr8eix-6684","title":"NGK Iridium IX BPR8EIX Spark Plug | Heat Range 8","description":"\u003ch2\u003eNGK Iridium IX Spark Plug | BPR8EIX 6684\u003c\/h2\u003e\n\u003cp\u003eImprove ignition reliability and spark performance with the NGK Iridium IX BPR8EIX Spark Plug. Designed for performance enthusiasts, this heat range 8 spark plug features a fine-wire iridium center electrode for consistent ignition, excellent durability, and reliable operation in compatible high-performance engines.\u003c\/p\u003e\n\u003cp\u003eThe Iridium IX design uses a 0.6mm iridium center electrode to concentrate spark energy and improve ignitability. Combined with a tapered-cut ground electrode, this design helps promote consistent combustion, smooth idling, and responsive throttle performance.\u003c\/p\u003e\n\u003cp\u003eNGK's trivalent metal shell plating provides corrosion resistance, while the copper-core electrode helps transfer heat away from the firing tip. These features make the BPR8EIX a popular choice for performance applications requiring its specific heat range, dimensions, and ignition characteristics.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eNGK Iridium IX performance spark plug\u003c\/li\u003e\n\u003cli\u003eFine-wire 0.6mm iridium center electrode\u003c\/li\u003e\n\u003cli\u003eNGK heat range 8\u003c\/li\u003e\n\u003cli\u003eTapered-cut ground electrode for improved ignitability\u003c\/li\u003e\n\u003cli\u003eCopper-core construction for effective heat transfer\u003c\/li\u003e\n\u003cli\u003eTrivalent metal plating for corrosion resistance\u003c\/li\u003e\n\u003cli\u003eDesigned for consistent spark performance and durability\u003c\/li\u003e\n\u003cli\u003eResistor design helps reduce electrical interference\u003c\/li\u003e\n\u003cli\u003eNGK stock number 6684\u003c\/li\u003e\n\u003cli\u003eNGK part number BPR8EIX\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eManufacturer: NGK\u003c\/li\u003e\n\u003cli\u003eSeries: Iridium IX\u003c\/li\u003e\n\u003cli\u003ePart Number: BPR8EIX\u003c\/li\u003e\n\u003cli\u003eStock Number: 6684\u003c\/li\u003e\n\u003cli\u003eHeat Range: 8\u003c\/li\u003e\n\u003cli\u003eThread Diameter: 14mm\u003c\/li\u003e\n\u003cli\u003eThread Pitch: 1.25mm\u003c\/li\u003e\n\u003cli\u003eThread Reach: 19mm (0.750 inch)\u003c\/li\u003e\n\u003cli\u003eHex Size: 21mm (13\/16 inch)\u003c\/li\u003e\n\u003cli\u003eSeat Type: Gasket\u003c\/li\u003e\n\u003cli\u003eCenter Electrode: Iridium\u003c\/li\u003e\n\u003cli\u003eGround Electrode: Nickel\u003c\/li\u003e\n\u003cli\u003eCenter Electrode Diameter: 0.6mm\u003c\/li\u003e\n\u003cli\u003ePreset Gap: 0.8mm (0.032 inch)\u003c\/li\u003e\n\u003cli\u003eResistor: 5,000 Ohms\u003c\/li\u003e\n\u003cli\u003eTerminal Type: Removable Nut\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003ePerformance Benefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFine-wire iridium electrode supports reliable ignition\u003c\/li\u003e\n\u003cli\u003eExcellent resistance to electrode wear\u003c\/li\u003e\n\u003cli\u003eHelps maintain consistent combustion under demanding conditions\u003c\/li\u003e\n\u003cli\u003eDesigned for performance-oriented engines\u003c\/li\u003e\n\u003cli\u003eCorrosion-resistant shell coating for long-term durability\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eVehicle Fitment \u0026amp; Compatibility\u003c\/h3\u003e\n\u003cp\u003eThe NGK BPR8EIX is designed for engines requiring its specific thread dimensions, heat range, reach, and electrode configuration. It may also serve as an iridium alternative to the NGK BPR8ES (3923) when approved for the application.\u003c\/p\u003e\n\u003cp\u003eAlways verify compatibility using the vehicle manufacturer's recommendations or NGK's application guide. Modified engines may require different spark plug heat ranges or electrode gaps depending on their ignition system, fuel type, and operating conditions.\u003c\/p\u003e\n\u003ch3\u003eImportant Installation Notes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eConfirm spark plug compatibility before installation\u003c\/li\u003e\n\u003cli\u003eVerify the required electrode gap for your application\u003c\/li\u003e\n\u003cli\u003eUse the correct torque specification for your cylinder head\u003c\/li\u003e\n\u003cli\u003eInstall using an appropriate spark plug socket\u003c\/li\u003e\n\u003cli\u003eDo not overtighten or damage the fine-wire iridium electrode\u003c\/li\u003e\n\u003cli\u003eProfessional installation is recommended when modifying ignition specifications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOne NGK Iridium IX BPR8EIX Spark Plug (6684)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhy Buy NGK from JD Customs USA?\u003c\/h3\u003e\n\u003cp\u003eJD Customs USA offers genuine NGK ignition components for enthusiasts who demand reliable performance from their engines. Whether maintaining a street car, servicing a modified engine, or preparing a vehicle for motorsport use, choosing the correct spark plug is essential for consistent ignition performance.\u003c\/p\u003e\n\u003cp\u003eOur team understands the importance of spark plug heat ranges, electrode gaps, and engine compatibility. We provide clear product specifications and knowledgeable customer support to help enthusiasts select the appropriate NGK ignition components for their builds.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine NGK ignition products\u003c\/li\u003e\n\u003cli\u003eAccurate manufacturer part numbers and specifications\u003c\/li\u003e\n\u003cli\u003eSupport for modified and high-performance engines\u003c\/li\u003e\n\u003cli\u003eKnowledgeable automotive enthusiast customer service\u003c\/li\u003e\n\u003cli\u003eSecure ordering from an established performance parts retailer\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"NGK","offers":[{"title":"Single Spark Plug","offer_id":68000657670396,"sku":"6684","price":8.0,"currency_code":"USD","in_stock":true},{"title":"Set of 4","offer_id":68000657703164,"sku":"6684*4","price":34.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1128\/7276\/files\/46eabb2d11ebbe40e6b6e5d85155d809.jpg?v=1765999144","url":"https:\/\/jdcustomsusa.com\/ja\/products\/ngk-3923-spark-plug-plugs-bpr8eix-6684","provider":"JD Customs U.S.A","version":"1.0","type":"link"}