NGK Spark Plugs C8HSA Spark Plug, Part Number 6821

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Spark Plug - C8HSA

The NGK Spark Plugs C8HSA spark plug is engineered to deliver dependable ignition performance for compatible motorcycles, scooters, powersports equipment, and other small-engine applications. Designed for vehicles requiring the C8HSA model, this spark plug supports consistent combustion, reliable starting, and efficient engine operation. Verify the application and fitment requirements before installation.

Manufactured by NGK Spark Plugs, the C8HSA uses a pure alumina silicate ceramic insulator for excellent strength and efficient heat transfer. Its copper core helps remove heat from the firing end, supporting stable operating temperatures under demanding conditions. Trivalent metal plating provides enhanced resistance to corrosion and seizing, helping simplify removal during future service.

The plug also features triple seals to help prevent leakage and corrugated ribs designed to reduce the risk of flashover. These construction details contribute to long-term durability and dependable performance in properly maintained engines. The NGK Spark Plugs C8HSA spark plug is identified by manufacturer part number 6821 and vendor part number 6821. For correct fitment, compare the C8HSA model and part number with the original equipment specifications for your vehicle or engine.

Features:

  • Model: C8HSA spark plug for compatible motorcycles, scooters, powersports equipment, and small engines
  • Brand: NGK Spark Plugs
  • Manufacturer Part Number: 6821
  • Vendor Part Number: 6821
  • Corrosion Resistance: Trivalent metal plating helps resist corrosion and spark plug seizure
  • Insulator: Pure alumina silicate ceramic provides high strength and efficient heat transfer
  • Heat Management: Copper core supports effective heat removal from the firing end
  • Sealing: Triple seals help prevent leakage
  • Flashover Protection: Corrugated ribs help reduce the possibility of flashover
  • Fitment: Designed for applications requiring the NGK C8HSA model and part number 6821