{"product_id":"denso-5091-spark-plug","title":"Denso 5091 Spark Plug","description":"\u003ch2\u003eReliable Ignition Performance for Select Vehicle Models\u003c\/h2\u003e\u003cp\u003eThe Denso Double Platinum 5091 spark plug is engineered to provide consistent ignition and efficient combustion for a range of vehicles including Buick, Cadillac, Chevrolet, Ford, Lincoln, Mazda, Mercedes-Benz, Mercury, Oldsmobile, and Pontiac models. Designed with durable materials and precise specifications, this spark plug supports optimal engine performance and longevity.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eDouble platinum electrodes for enhanced durability and stable spark\u003c\/li\u003e\n\u003cli\u003eCenter electrode with copper core and platinum tip for efficient conductivity\u003c\/li\u003e\n\u003cli\u003eGround electrode features a platinum chip tip with nickel core material\u003c\/li\u003e\n\u003cli\u003eStandard ground configuration with a single ground electrode\u003c\/li\u003e\n\u003cli\u003ePre-gap size of 1.0 mm for precise ignition timing\u003c\/li\u003e\n\u003cli\u003eTapered seat type and 14 mm thread diameter for secure fitment\u003c\/li\u003e\n\u003cli\u003eHex size of 16 mm for easy installation and removal\u003c\/li\u003e\n\u003cli\u003eManufacturer heat range rating of 16 suitable for various driving conditions\u003c\/li\u003e\n\u003cli\u003eReach length of 19.00 mm to fit specific engine designs\u003c\/li\u003e\n\u003cli\u003eResistance rating of 5000 ohms to reduce electrical noise interference\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eAbout the Denso Double Platinum Spark Plug Line\u003c\/h2\u003e\u003cp\u003eThe Double Platinum line from Denso is designed to deliver reliable ignition performance through the use of platinum on both the center and ground electrodes. This dual platinum design helps extend the service life of the spark plug by resisting electrode wear and maintaining a stable spark over time. The 5091 part number represents a specific configuration within this line, tailored to fit a variety of domestic and import vehicles requiring a 14 mm thread diameter and tapered seat.\u003c\/p\u003e\u003ch2\u003eTechnical Details and Application\u003c\/h2\u003e\u003cp\u003eThe Denso 5091 spark plug features a copper core center electrode with a platinum tip, which enhances thermal conductivity and spark efficiency. The ground electrode uses a nickel core with a platinum chip tip, providing durability and consistent spark gap maintenance. The standard ground configuration with a single electrode supports reliable ignition without complexity. With a pre-gap size of 1.0 mm and a reach of 19.00 mm, this spark plug is compatible with many engines found in models such as the Ford Mustang, Chevrolet Camaro, Cadillac SRX, and Mazda Milan.\u003c\/p\u003e\u003ch2\u003eCommon Issues Addressed by This Spark Plug\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eEngine misfires caused by worn or damaged spark plugs\u003c\/li\u003e\n\u003cli\u003eReduced fuel efficiency due to inconsistent ignition\u003c\/li\u003e\n\u003cli\u003eDifficulty starting the engine in cold or damp conditions\u003c\/li\u003e\n\u003cli\u003eRough idling or hesitation during acceleration\u003c\/li\u003e\n\u003cli\u003eExcessive emissions from incomplete combustion\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eWhen installing the Denso Double Platinum 5091 spark plug, ensure the engine is cool to prevent damage to the threads. Use a torque wrench to tighten the spark plug to the manufacturer’s recommended specifications to avoid over-tightening or under-tightening. Verify the pre-gap size of 1.0 mm before installation, adjusting if necessary. The 16 mm hex size allows for standard spark plug socket compatibility. Always replace spark plugs in sets to maintain balanced engine performance.\u003c\/p\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eDenso spark plugs are manufactured to meet strict quality standards and undergo rigorous testing to ensure durability and performance. The Double Platinum 5091 spark plug is designed for long service life and consistent ignition. While specific warranty details may vary, Denso products typically come with a limited warranty covering defects in materials and workmanship under normal use.\u003c\/p\u003e","brand":"Denso","offers":[{"title":"Default Title","offer_id":43446402613429,"sku":"BBNF-5091","price":15.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/NP_5091_Fro_02903863-5369-4146-8c2c-bda39c5ca529.jpg?v=1774734451","url":"https:\/\/www.partcatalog.com\/products\/denso-5091-spark-plug","provider":"PartCatalog","version":"1.0","type":"link"}