{"product_id":"ngk-1491-spark-plug","title":"NGK 1491 Spark Plug","description":"\u003ch2\u003eNGK CR9EB BLYB Spark Plug\u003c\/h2\u003e\u003cp\u003eNGK 1491 is a standard carded spark plug built for a wide range of powersports and motorcycle applications. It uses a copper center electrode core, nickel center and ground electrode tips, and a 0.032-inch pre-gap for direct replacement service where specified.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eNGK part number 1491, also identified as CR9EB BLYB.\u003c\/li\u003e\n\u003cli\u003eCopper core center electrode for stable ignition performance.\u003c\/li\u003e\n\u003cli\u003eNickel tip materials on both electrodes.\u003c\/li\u003e\n\u003cli\u003eStandard ground electrode design with a flat seat.\u003c\/li\u003e\n\u003cli\u003e0.032-inch pre-gap and 5000 ohm resistance.\u003c\/li\u003e\n\u003cli\u003e10 mm thread diameter, 0.75-inch reach, and 5\/8 hex size.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Description\u003c\/h2\u003e\u003cp\u003eThis NGK spark plug is engineered for applications that call for a flat-seat plug with a 0.032-inch gap and standard electrode configuration. The CR9EB BLYB \/ 1491 specification includes a copper core, nickel tip construction, and a non-removable nut terminal for consistent ignition service. It is listed for Yamaha WaveRunner, Yamaha EX1050, and Yamaha YXZ1000R applications, along with select Arctic Cat, Harley-Davidson, MV Agusta, Aprilia, Husqvarna, Piaggio, and Textron models. This part cross-references Timken 653 for the same application.\u003c\/p\u003e\u003ch2\u003eCommon Uses\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eRestores ignition performance when the original plug is worn or fouled.\u003c\/li\u003e\n\u003cli\u003eAddresses hard starting caused by incorrect gap or degraded electrodes.\u003c\/li\u003e\n\u003cli\u003eHelps correct misfire, rough idle, or inconsistent combustion.\u003c\/li\u003e\n\u003cli\u003eReplaces a plug with the wrong heat range or thread specification.\u003c\/li\u003e\n\u003cli\u003eSupports service intervals on powersports and motorcycle engines.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\u003cp\u003eVerify the required gap before installation and adjust only if the application calls for a different setting. Confirm thread diameter, reach, seat type, and heat range against the engine specification before use. For fitment, this plug is listed for applications such as Fits 2020-2024 Yamaha EX1050 EX, N\/A; Fits 2016-2019 Yamaha YXZ1000R, N\/A; and Fits 2015-2016 Harley-Davidson XG750 Street 750, N\/A.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eNGK is a major OE supplier of spark plugs in North America and has more than 80 years of automotive manufacturing experience. The brand states that it maintains original equipment standards for durability and operational performance.\u003c\/p\u003e","brand":"NGK","offers":[{"title":"Default Title","offer_id":53725760159925,"sku":"BCDP-1491","price":15.29,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/NG_1491_Fro.jpg?v=1794209532","url":"https:\/\/www.partcatalog.com\/products\/ngk-1491-spark-plug","provider":"PartCatalog","version":"1.0","type":"link"}