{"product_id":"ngk-90156-spark-plug","title":"NGK 90156 Spark Plug","description":"\u003ch2\u003eNGK Laser Iridium Spark Plug 90156\u003c\/h2\u003e\u003cp\u003eNGK 90156 is a Laser Iridium spark plug built for OE-style ignition performance in select Cadillac CTS, Chevrolet Camaro, Chevrolet Corvette, and Ford Mustang applications. It uses an iridium center electrode, nickel ground electrode, and a tapered seat to support consistent combustion and reliable spark delivery.\u003c\/p\u003e\u003cp\u003eThe Laser Iridium Spark Plug line combines NGK’s OE-focused engineering with durable electrode materials and precise gap control. For drivers servicing a 2013-2015 Cadillac CTS, 2012-2015 Chevrolet Camaro, 2006-2011 Chevrolet Corvette, or 2013-2014 Ford Mustang, part number 90156 is a direct-fit ignition service option.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePart number 90156 \/ NGK ITR6G9\u003c\/li\u003e\n\u003cli\u003eLaser Iridium center electrode tip for stable spark performance\u003c\/li\u003e\n\u003cli\u003eNickel ground electrode with standard configuration\u003c\/li\u003e\n\u003cli\u003ePre-gapped at .036 in. with 5,000 ohms resistance\u003c\/li\u003e\n\u003cli\u003eCopper core center electrode for efficient heat transfer\u003c\/li\u003e\n\u003cli\u003eTapered seat, 14 mm thread diameter, 5\/8 in. hex\u003c\/li\u003e\n\u003cli\u003eOE-equivalent design for listed Cadillac, Chevrolet, and Ford applications\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eProduct Details\u003c\/h2\u003e\u003cp\u003eNGK manufactures this spark plug with an iridium firing tip and a copper-core center electrode to support dependable ignition under everyday driving and higher-load conditions. The 6 heat range, .708 in. reach, and non-removable nut terminal match the listed OE-style specifications for the covered vehicles. This part cross-references DENSO Auto Parts 4512 for the same application.\u003c\/p\u003e\u003ch2\u003eWhat It Helps Address\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eRough idle caused by worn spark plugs\u003c\/li\u003e\n\u003cli\u003eHard starting from weakened ignition output\u003c\/li\u003e\n\u003cli\u003eMisfire codes related to plug wear or gap growth\u003c\/li\u003e\n\u003cli\u003eReduced throttle response from inconsistent spark delivery\u003c\/li\u003e\n\u003cli\u003eService intervals on high-output Cadillac CTS, Chevrolet Camaro, Chevrolet Corvette, and Ford Mustang engines\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eVerify engine application and cylinder count before installation.\u003c\/li\u003e\n\u003cli\u003eCheck the specified gap for your vehicle; listed fitments include .040 in. and .036 in. OE-equivalent requirements.\u003c\/li\u003e\n\u003cli\u003eUse the correct torque procedure for tapered-seat spark plugs.\u003c\/li\u003e\n\u003cli\u003eInspect ignition coils, boots, and plug wells during service.\u003c\/li\u003e\n\u003cli\u003eConfirm the part number 90156 matches the engine specification before final assembly.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eNGK is a long-established OE supplier and manufacturer with broad coverage across domestic and import vehicles. Part number 90156 reflects NGK’s OE-focused manufacturing standards for durability and consistent ignition performance in the listed applications.\u003c\/p\u003e\u003ch2\u003eCompatible Vehicles\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eFits 2013-2015 Cadillac CTS, N\/A\u003c\/li\u003e\n\u003cli\u003eFits 2012 Cadillac CTS, N\/A\u003c\/li\u003e\n\u003cli\u003eFits 2009-2011 Cadillac CTS, N\/A\u003c\/li\u003e\n\u003cli\u003eFits 2014-2015 Chevrolet Camaro, N\/A\u003c\/li\u003e\n\u003cli\u003eFits 2012-2015 Chevrolet Camaro, N\/A\u003c\/li\u003e\n\u003cli\u003eFits 2012-2013 Chevrolet Corvette, N\/A\u003c\/li\u003e\n\u003cli\u003eFits 2006-2011 Chevrolet Corvette, N\/A\u003c\/li\u003e\n\u003cli\u003eFits 2013-2014 Ford Mustang, N\/A\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"NGK","offers":[{"title":"Default Title","offer_id":52412241412277,"sku":"BCDP-90156","price":14.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/NG_90156_Fro.jpg?v=1777787386","url":"https:\/\/www.partcatalog.com\/products\/ngk-90156-spark-plug","provider":"PartCatalog","version":"1.0","type":"link"}