{"product_id":"ngk-spark-plugs-br9hs-10-4551-pack-of-10-genuine-replacement-factory-fit-for-reliable-starts","title":"NGK Spark Plugs BR9HS-10 (4551) Pack of 10 — Genuine replacement, factory-fit for reliable starts","description":"\u003cp\u003e\u003cstrong\u003eNGK 4551 (BR9HS-10) spark plugs — a 10-pack of genuine NGK replacement plugs engineered for reliable ignition and straightforward swap-ins for compatible engines.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis pack contains ten NGK BR9HS-10 spark plugs (stock number 4551) supplied in original packaging. These are standard replacement ignition plugs from NGK, built to the brand's factory specifications for fit and performance in engines that list BR9HS-10 or 4551 as the required part. The set includes the plugs and any original hardware or packaging materials, making it easy to replace worn or fouled plugs in batches or keep spares on hand.\u003c\/p\u003e\n\n\u003ch3\u003eWill these NGK spark plugs fit my vehicle?\u003c\/h3\u003e\n\n\u003cp\u003eCompatibility depends on the engine manufacturer's specified plug type. Check your owner's manual, the existing plug stamping, or an online fitment tool to confirm BR9HS-10 (NGK stock 4551) matches your vehicle model and year.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eConfirm part number BR9HS-10 or stock 4551 against your vehicle's requirements.\u003c\/li\u003e\n  \u003cli\u003eUse the seller’s or OEM fitment checker to avoid installation errors.\u003c\/li\u003e\n  \u003cli\u003eOne pack contains ten plugs — useful for multi-cylinder engines or service kits.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do NGK BR9HS-10 plugs affect starting and idle?\u003c\/h3\u003e\n\n\u003cp\u003eWhen the correct plug type is installed, ignition becomes more consistent which supports reliable starts and smoother idling. These NGK standard plugs are manufactured to maintain the expected gap and firing characteristics for engines designed around this plug heat range.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eFactory-set design preserves intended heat range and firing properties.\u003c\/li\u003e\n  \u003cli\u003eProperly gapped and inspected plugs reduce misfires and rough idle.\u003c\/li\u003e\n  \u003cli\u003eReplacing worn plugs can restore engine responsiveness without other modifications.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat’s included and how are the plugs packaged?\u003c\/h3\u003e\n\n\u003cp\u003eThis listing supplies ten genuine NGK BR9HS-10 spark plugs (stock no. 4551) in their original packaging and with original hardware where applicable. Packaging protects the ceramic insulators and electrodes during shipping and storage so each plug arrives ready for installation.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eTen NGK BR9HS-10 spark plugs — full pack for multi-plug needs.\u003c\/li\u003e\n  \u003cli\u003eOriginal NGK packaging to ensure parts are protected and identifiable.\u003c\/li\u003e\n  \u003cli\u003eHardware provided as included by NGK when applicable; check the item photos and description.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow should I install and maintain these spark plugs?\u003c\/h3\u003e\n\n\u003cp\u003eInstallation is straightforward for anyone comfortable with basic engine service: remove old plugs, inspect the cylinder head, and install new plugs at the correct torque and gap specification. Regular inspection and replacement at manufacturer-recommended intervals keep ignition reliable and prevent long-term issues caused by fouled or eroded electrodes.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eAlways verify correct torque and gap per vehicle specifications before installation.\u003c\/li\u003e\n  \u003cli\u003eReplace in matched sets as recommended, especially on multi-cylinder engines.\u003c\/li\u003e\n  \u003cli\u003eInspect for oil or coolant leaks that can foul new plugs prematurely.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: mechanics, DIY enthusiasts, and fleet managers who need a full set of genuine NGK BR9HS-10 replacement spark plugs for routine maintenance or batch servicing. If your application calls for NGK stock number 4551 or part BR9HS-10, this ten-pack gives authentic parts in original packaging to keep multiple engines running or to stock up for future service jobs.\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: How many spark plugs are in this NGK pack?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: This listing contains ten NGK BR9HS-10 spark plugs (stock no. 4551) in original packaging.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use these plugs on any vehicle?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Only if your vehicle specifies BR9HS-10 or NGK stock 4551; check fitment tools, the owner's manual, or the existing plug stamping.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"NGK","offers":[{"title":"Default Title","offer_id":67587561259193,"sku":"B072B5SXVM","price":85.84,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0822\/3765\/3177\/files\/ngk-br9hs-10-front-packaging.jpg?v=1790512830","url":"https:\/\/redleafauto.ca\/products\/ngk-spark-plugs-br9hs-10-4551-pack-of-10-genuine-replacement-factory-fit-for-reliable-starts","provider":"Redleaf Auto","version":"1.0","type":"link"}