{"product_id":"surface-gap-plug-mercury-johnson-marine-7447buz8h-ngk-nos","title":"Surface Gap Plug - Mercury \/ Johnson \/ Marine - 7447BUZ8H - NGK - NOS","description":"\u003cdiv style=\"margin-bottom:20px;\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;\"\u003e\n\u003ctr\u003e\n\u003ctd style=\"font-weight:500;width:140px;padding:4px 0;\"\u003eBrand\u003c\/td\u003e\n\u003ctd style=\"font-weight:600;padding:4px 0;\"\u003eNGK\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"font-weight:500;width:140px;padding:4px 0;\"\u003ePart Number\u003c\/td\u003e\n\u003ctd style=\"font-weight:600;padding:4px 0;\"\u003e7447BUZ8H\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"font-weight:500;width:140px;padding:4px 0;\"\u003eType\u003c\/td\u003e\n\u003ctd style=\"font-weight:600;padding:4px 0;\"\u003eSpark Plug\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"font-weight:500;width:140px;padding:4px 0;\"\u003eCondition\u003c\/td\u003e\n\u003ctd style=\"font-weight:600;padding:4px 0;\"\u003eNew Old Stock\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThread diameter: 14 mm\u003c\/li\u003e\n\u003cli\u003eThread pitch: 1.25 mm\u003c\/li\u003e\n\u003cli\u003eReach: 12.7 mm (1\/2\")\u003c\/li\u003e\n\u003cli\u003eHex size: 13\/16\" (21 mm)\u003c\/li\u003e\n\u003cli\u003eSeat type: Gasket (flat seat)\u003c\/li\u003e\n\u003cli\u003ePre-gap: 0.016\" (0.4 mm)\u003c\/li\u003e\n\u003cli\u003eHeat range: 8\u003c\/li\u003e\n\u003cli\u003eResistor: Yes — inductive type\u003c\/li\u003e\n\u003cli\u003eResistor value: 35 ohms\u003c\/li\u003e\n\u003cli\u003eTerminal type: Solid\u003c\/li\u003e\n\u003cli\u003eCentre electrode material: Nickel with copper core\u003c\/li\u003e\n\u003cli\u003eGround electrode configuration: Surface discharge (no side wire electrode)\u003c\/li\u003e\n\u003cli\u003eTorque (cast iron head): 18–25.3 lb·ft\u003c\/li\u003e\n\u003cli\u003eTorque (aluminium head): 18–21.6 lb·ft\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eVehicle Fitment\u003c\/h3\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;font-size:13px;\"\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:5px 10px;font-weight:500;\"\u003eJohnson\u003c\/td\u003e\n\u003ctd style=\"padding:5px 10px;\"\u003eoutboard engines — multiple models (CDI ignition systems)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:5px 10px;font-weight:500;\"\u003eMercury\u003c\/td\u003e\n\u003ctd style=\"padding:5px 10px;\"\u003eoutboard engines — multiple models 1979–1998 (CDI ignition systems)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:5px 10px;font-weight:500;\"\u003eMercury\u003c\/td\u003e\n\u003ctd style=\"padding:5px 10px;\"\u003einboard engines — various\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:5px 10px;font-weight:500;\"\u003eMarine\u003c\/td\u003e\n\u003ctd style=\"padding:5px 10px;\"\u003ejet boat engines — Bayliner, Caribe, Checkmate, Cutter, Delta Sonic Jet, Dynasty, Euroline, Nautica, North River, Northstar, Regal, Sea Ray, Sea-Doo, Sugar Sand, Tender Jet, Voyager\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:5px 10px;font-weight:500;\"\u003eMercury\u003c\/td\u003e\n\u003ctd style=\"padding:5px 10px;\"\u003eMariner 50hp 3-cylinder 2-stroke outboard\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCross References\u003c\/h3\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;font-size:13px;\"\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:6px 10px;font-weight:600;font-size:11px;text-transform:uppercase;letter-spacing:0.5px;\"\u003ePart Numbers\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:6px 10px;font-weight:600;font-size:11px;text-transform:uppercase;letter-spacing:0.5px;\"\u003eRelationship\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 10px;font-family:monospace;font-size:12px;\"\u003eAutolite 2852, Champion QL16V, Champion CCH876M, Denso SF-24\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003eequivalent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 10px;font-family:monospace;font-size:12px;\"\u003eMercruiser 33-876, Mercruiser 33-886, OMC 502894, OMC 509924, Mercury 14103568\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003eOE original\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003cdiv style=\"background:#fffbeb;border:1px solid #fde68a;border-radius:8px;padding:14px 16px;margin-top:16px;font-size:13px;color:#92400e;line-height:1.6;\"\u003e\n\u003cstrong style=\"color:#78350f;\"\u003eNew Old Stock (NOS) — Unused part in original condition. Packaging may show age-related shelf wear.\u003c\/strong\u003e New old stock in original sealed NGK retail box. Box shows minor shelf wear consistent with age — slight scuffing on corners. Part appears unused and unfitted. Electrical and ignition components should be tested by a qualified auto electrician before installation. Please confirm this part number suits your vehicle before purchasing.\u003c\/div\u003e\n\n\u003cp style=\"margin:16px 0 0;font-size:11px;color:#6b7280;\"\u003eSKU: IGN-00496\u003c\/p\u003e","brand":"Nelson Merchant Surplus","offers":[{"title":"Default Title","offer_id":45063768867016,"sku":"IGN-00496","price":26.0,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2313\/5711\/files\/IGN-00496_3487.jpg?v=1777020097","url":"https:\/\/nelsonmerchant.co.nz\/products\/surface-gap-plug-mercury-johnson-marine-7447buz8h-ngk-nos","provider":"Nelson Merchants","version":"1.0","type":"link"}