NGK Spark Plugs, LFR6A-11 #3672 - 8 Pack

Stock up on dependable ignition performance with the NGK LFR6A-11 standard spark plug in an 8 pack. NGK standard plugs are chosen by more automotive, motorcycle, and marine engine manufacturers than any other, thanks to a proven copper core and an electrode design that supports fast starts, consistent combustion, and long service life.

Whether you are servicing multiple cylinders, keeping spares on hand, or maintaining more than one engine, this 8 pack helps you stay prepared while using the same OEM-trusted plug technology NGK is known for.

Key Features

• NGK standard spark plug design for consistent ignition performance
• Unique copper core and electrode design for fast starts and strong performance
• Triple gasket sealing process helps eliminate gas leakage past the shell
• 99% highly pure alumina silicate insulator for strength and heat resistance
• Solid copper core supports efficient heat transfer and durability
• Corrugated ribs help prevent flash over
• Cold rolled threads help prevent damage to the cylinder head
• Trivalent plating (silver chromate and zinc) for corrosion resistance
• Plug Number: LFR6A-11
• NGK Part Number: 3672
• Pack Size: 8

Why Replace Spark Plugs on Schedule

Spark plugs directly affect how cleanly your engine runs. Fresh plugs can help maintain smooth idle, reliable starting, and consistent acceleration. Replacing plugs at the recommended interval also supports efficient combustion and can help reduce misfires caused by worn electrodes or excessive gap.

FAQs

• Is this listing an 8 pack?
  Yes. This listing includes 8 NGK spark plugs.
• What is the plug number?
  The plug number is LFR6A-11.
• What is the NGK part number?
  The NGK part number is 3672.
• How do I confirm this is the correct plug for my engine?
  Match your existing plug number and confirm fitment using your engine manual or parts lookup before ordering.
• Should spark plugs be replaced as a full set?
  Many engines run best when plugs are replaced as a complete set. Follow your manufacturer’s service guidance for quantity and interval.