{"product_id":"ngk-buz8h-spark-plug-stock-number-7447-for-mercury-i-o-and-evinrude-johnson-outboards","title":"NGK BUZ8H Spark Plug, Stock Number 7447, for Mercury I\/O and Evinrude\/Johnson Outboards","description":"\u003cp\u003eThe NGK BUZ8H is a standard nickel spark plug built for Mercury sterndrive engines and Evinrude and Johnson outboard engines that call for this specific plug. It uses a solid copper core center electrode for strong heat dissipation and conductivity across a broad heat range, paired with a nickel center electrode tip and a nickel ground electrode. The plug is configured with surface discharge ground firing and carries a 35 ohm resistance value. NGK treats the plug with corrosion-resistant plating so it threads in and out cleanly during installation and future servicing, reducing the risk of thread damage on aluminum cylinder heads common to marine engines.\u003c\/p\u003e\u003cp\u003eThis plug is identified by NGK stock number 7447 and manufacturer part number BUZ8H. It is designed to fit Mercury I\/O (inboard\/outboard, sterndrive) engines from 2006 to 1997, Evinrude outboard engines from 1987 to 1977, Johnson outboard engines from 1992 to 1976, and Mercury outboard engines from 2002 to 1987. Because ignition components are engine-specific, always confirm the plug called for in your engine's maintenance manual or original equipment specification before ordering, since installing the wrong heat range or resistance value can reduce performance, hurt fuel economy, or damage the engine.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e NGK\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e BUZ8H\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStock Number:\u003c\/strong\u003e 7447\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eResistance:\u003c\/strong\u003e 35 ohm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGround Configuration:\u003c\/strong\u003e Surface Discharge\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGround Electrode Core Material:\u003c\/strong\u003e Nickel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCenter Electrode Core Material:\u003c\/strong\u003e Copper\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCenter Electrode Tip Material:\u003c\/strong\u003e Nickel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 087295174470\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.15 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Equivalent Part Number:\u003c\/strong\u003e 14103568\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eI\/O (sterndrive): Mercury, 2006-1997\u003c\/li\u003e\n\u003cli\u003eOutboard: Evinrude, 1987-1977\u003c\/li\u003e\n\u003cli\u003eOutboard: Johnson, 1992-1976\u003c\/li\u003e\n\u003cli\u003eOutboard: Mercury, 2002-1987\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e14103568\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the NGK BUZ8H (stock number 7447) fit?\u003c\/strong\u003e This plug fits Mercury I\/O sterndrive engines from 2006 to 1997, Evinrude outboard engines from 1987 to 1977, Johnson outboard engines from 1992 to 1976, and Mercury outboard engines from 2002 to 1987.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs BUZ8H the correct part number to search for?\u003c\/strong\u003e Yes, BUZ8H is the manufacturer part number for this NGK plug, also cataloged under NGK stock number 7447.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the resistance value of the NGK BUZ8H spark plug?\u003c\/strong\u003e The NGK BUZ8H has a resistance of 35 ohm.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat ground electrode configuration does this plug use?\u003c\/strong\u003e The BUZ8H uses a surface discharge ground configuration with a nickel ground electrode.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat materials are the electrodes made of?\u003c\/strong\u003e The center electrode has a copper core with a nickel tip, and the ground electrode core material is nickel.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the NGK 7447 spark plug weigh?\u003c\/strong\u003e This spark plug weighs 0.15 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs there an OEM equivalent number for the BUZ8H?\u003c\/strong\u003e Yes, the OEM equivalent part number for the NGK BUZ8H is 14103568.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this plug fit both inboard\/outboard and outboard engines?\u003c\/strong\u003e The NGK BUZ8H covers both applications: it fits Mercury I\/O (sterndrive) engines from 2006-1997 and outboard engines from Evinrude, Johnson, and Mercury within the listed year ranges.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the BUZ8H require any special installation care?\u003c\/strong\u003e The plug is corrosion-resistant plated for easier installation and removal, but the correct torque and thread care for your specific marine engine should still be followed.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat happens if I install the wrong spark plug in my marine engine?\u003c\/strong\u003e Using an incorrect plug in place of the NGK BUZ8H can reduce optimum engine performance, lower fuel economy, or cause engine damage, so always confirm fitment against your engine's maintenance manual first.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this a platinum or iridium spark plug?\u003c\/strong\u003e No, the BUZ8H is a standard nickel-design plug with a copper core, not a platinum or iridium plug.\u003c\/p\u003e","brand":"NGK Spark Plugs","offers":[{"title":"Default Title","offer_id":49028254105819,"sku":"NGK-BUZ8H","price":12.53,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/NGK-BUZ8H__76309.1558187629.500.750.jpg?v=1785165231","url":"https:\/\/www.goodvibesmarina.com\/products\/ngk-buz8h-spark-plug-stock-number-7447-for-mercury-i-o-and-evinrude-johnson-outboards","provider":"Good Vibes Marina","version":"1.0","type":"link"}