{"product_id":"ngk-spark-plugs-bpm8y-5574-10-pack-98-copper-core-corrosion-resistant-plating","title":"NGK Spark Plugs BPM8Y (5574) 10-Pack — 98% Copper Core, Corrosion-Resistant Plating","description":"\u003cp\u003e\u003cstrong\u003eNGK 5574 (BPM8Y) is a standard replacement spark plug sold in a 10-pack, built with a 98% copper core and corrosion-resistant plating for dependable starts and long-term serviceability.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThese NGK Standard Spark Plugs are engineered for everyday ignition reliability across compatible engines. They combine a high-purity copper core for improved heat transfer with robust ceramic insulation and protective plating to simplify installation and reduce maintenance. Designed to resist common issues like cross-threading, flashover and seizing, this 10-pack is ideal for fleet servicing, hobbyists, or routine tune-ups.\u003c\/p\u003e\n\n\u003ch3\u003eHow does the NGK 5574 improve engine starting and heat control?\u003c\/h3\u003e\n\u003cp\u003eThe plug’s 98% copper center enhances thermal conductivity so heat is drawn away from the firing end faster than with lower-grade cores. Better heat dissipation helps maintain consistent spark performance and reduces the risk of the plug running too hot under normal operating conditions.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e98% pure copper core for superior heat transfer\u003c\/li\u003e\n  \u003cli\u003eReduces tendency to overheat during normal engine operation\u003c\/li\u003e\n  \u003cli\u003eConsistent spark gap stability for reliable ignition\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill installation be straightforward and safe for my engine?\u003c\/h3\u003e\n\u003cp\u003eYes — the NGK 5574 includes cold-rolled threads to minimize the chance of cross-threading and damage to cylinder head threads during installation. Corrosion-resistant trivalent plating removes the need for anti-seize compounds in most applications, simplifying service and preventing seizure when removal is required.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCold-rolled threads to protect cylinder head threads\u003c\/li\u003e\n  \u003cli\u003eTrivalent plating resists corrosion and usually negates anti-seize\u003c\/li\u003e\n  \u003cli\u003eCorrugated ribs on the insulator reduce flashover risk\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat materials and construction features boost durability and performance?\u003c\/h3\u003e\n\u003cp\u003eThe insulator is made from high-grade alumina silicate ceramic, chosen for strength and excellent heat transfer. Corrugated ribs on the ceramic surface help prevent electrical flashovers, while plating and quality cores reduce corrosion and wear, extending service intervals when used in recommended conditions.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHigh-grade alumina silicate ceramic insulator for mechanical strength\u003c\/li\u003e\n  \u003cli\u003eCorrugated insulator ribs to prevent flashover\u003c\/li\u003e\n  \u003cli\u003eCorrosion-resistant plating for easier removal later\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow many plugs are included and what applications suit a 10-pack?\u003c\/h3\u003e\n\u003cp\u003eThis product comes as a pack of ten identical NGK BPM8Y (5574) plugs. The quantity suits multi-cylinder engines, routine shop stock, or owners maintaining several small engines, motorcycles, or older vehicles that specify this plug type.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eQuantity: 10 spark plugs per package\u003c\/li\u003e\n  \u003cli\u003eGood for multi-vehicle maintenance or shop inventory\u003c\/li\u003e\n  \u003cli\u003eFits engines specifying NGK BPM8Y \/ 5574 compatible part numbers\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The NGK 5574 (BPM8Y) 10-pack is aimed at mechanics, fleet operators, small-engine technicians, and DIYers who want a dependable, service-friendly replacement spark plug. If you need reliable heat control, reduced installation issues, and a cost-effective bulk supply for routine maintenance, this NGK set is designed to meet those needs without specialty tips or exotic materials.\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003eNote:\u003c\/em\u003e Always verify the correct spark plug specification for your engine model in the manufacturer's service manual before installing. Product images shown are representational; check packaging labels for exact part numbers.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Do NGK 5574 plugs require anti-seize?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No, the trivalent corrosion-resistant plating generally eliminates the need for anti-seize in typical installations.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How many plugs are in the package?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: This product includes ten NGK BPM8Y (5574) spark plugs per package.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"NGK","offers":[{"title":"Default Title","offer_id":55166452859223,"sku":"B004NMPX76","price":39.06,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/ngk-bpm8y-front-packaging.jpg?v=1790368710","url":"https:\/\/britishgarage.co.uk\/products\/ngk-spark-plugs-bpm8y-5574-10-pack-98-copper-core-corrosion-resistant-plating","provider":"British Garage","version":"1.0","type":"link"}