{"product_id":"bosch-6739-spark-plug","title":"Bosch 6739 Spark Plug","description":"\u003ch2\u003eOverview of Bosch OE Fine Wire Platinum Spark Plug 6739\u003c\/h2\u003e\u003cp\u003eThe Bosch OE Fine Wire Platinum Spark Plug 6739 is engineered for reliable ignition performance in select Ford, Lincoln, and Mercury vehicles. Designed with precision materials and a fine wire platinum center electrode, this spark plug supports efficient combustion and consistent engine operation.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFine wire platinum center electrode for improved ignition\u003c\/li\u003e\n\u003cli\u003e6000 ohm resistor to reduce electrical noise\u003c\/li\u003e\n\u003cli\u003eStandard ground electrode with nickel tip and J-gap configuration\u003c\/li\u003e\n\u003cli\u003eCopper core center electrode for enhanced conductivity\u003c\/li\u003e\n\u003cli\u003eTapered seat type with 14 mm thread diameter and 25 mm reach\u003c\/li\u003e\n\u003cli\u003eNon-projected ceramic insulator with a 1.3 mm pre-gap size\u003c\/li\u003e\n\u003cli\u003eHex size 16 mm with non-removable nut electrical terminal\u003c\/li\u003e\n\u003cli\u003eManufacturer heat range 8 suitable for various driving conditions\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Product Features and Specifications\u003c\/h2\u003e\u003cp\u003eThis Bosch spark plug features a fine wire platinum center electrode tip that enhances ignition reliability and durability. The copper core center electrode improves thermal conductivity, helping maintain optimal operating temperatures. The ground electrode is constructed from nickel with a standard tip design and a J-gap configuration, which supports stable spark generation. The spark plug includes a 6000 ohm resistor to minimize radio frequency interference, ensuring compatibility with modern vehicle electronics.\u003c\/p\u003e\u003cp\u003eThe insulator is made from durable ceramic material with a non-projected design, providing excellent electrical insulation and heat resistance. The spark plug has a tapered seat type and a thread diameter of 14 mm with a 25 mm reach, making it compatible with specific Ford, Lincoln, and Mercury models. The pre-gap size is set at 1.3 mm, optimized for efficient combustion. The hex size of 16 mm and a non-removable nut electrical terminal facilitate secure installation and connection.\u003c\/p\u003e\u003ch2\u003eAbout the OE Fine Wire Platinum Product Line\u003c\/h2\u003e\u003cp\u003eThe Bosch OE Fine Wire Platinum line focuses on delivering spark plugs with fine wire platinum electrodes that provide consistent ignition performance and extended service life. This product line is designed to meet or exceed original equipment specifications, making it suitable for drivers seeking reliable replacement parts for their vehicles. The 6739 spark plug exemplifies this line’s emphasis on precision engineering and material quality.\u003c\/p\u003e\u003ch2\u003eCompatible Vehicles and Common Applications\u003c\/h2\u003e\u003cp\u003eThis spark plug is compatible with a range of Ford, Lincoln, and Mercury vehicles, including:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFord C-Max, Escape, Explorer, Fusion, Transit-150, Transit-250, Transit-350, Transit-350 HD, Transit Connect\u003c\/li\u003e\n\u003cli\u003eLincoln Corsair, MKZ\u003c\/li\u003e\n\u003cli\u003eMercury Mariner, Milan, SSV Plug-In Hybrid\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eIt is designed for 4-cycle engines and is suitable for use in secondary ignition systems.\u003c\/p\u003e\u003ch2\u003eCommon Issues Addressed by Bosch Spark Plug 6739\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eEngine misfires and rough idling\u003c\/li\u003e\n\u003cli\u003ePoor fuel efficiency due to incomplete combustion\u003c\/li\u003e\n\u003cli\u003eDifficulty starting the engine in cold conditions\u003c\/li\u003e\n\u003cli\u003eIncreased emissions from inefficient ignition\u003c\/li\u003e\n\u003cli\u003eElectrical interference affecting vehicle electronics\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eWhen installing the Bosch OE Fine Wire Platinum Spark Plug 6739, ensure the spark plug gap is set to the recommended 1.3 mm pre-gap size if adjustment is necessary. Use a torque wrench to tighten the spark plug to the manufacturer’s specifications to avoid damage to the tapered seat or threads. The 16 mm hex size allows for standard spark plug socket compatibility. Avoid over-tightening to maintain proper sealing and prevent thread damage.\u003c\/p\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eBosch spark plugs are manufactured to meet strict quality standards, ensuring consistent performance and durability. The OE Fine Wire Platinum 6739 spark plug includes a resistor to reduce electrical noise and is constructed with high-quality materials such as platinum, copper, and nickel. While specific warranty details are not provided here, Bosch products typically come with manufacturer-backed quality assurance to support reliable operation in compatible vehicles.\u003c\/p\u003e","brand":"Bosch","offers":[{"title":"Default Title","offer_id":52215300948149,"sku":"BBHK-6739","price":9.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/BS_6739_Fro.jpg?v=1775596558","url":"https:\/\/www.partcatalog.com\/products\/bosch-6739-spark-plug","provider":"PartCatalog","version":"1.0","type":"link"}