The NGK Spark Plugs R5671A-9 spark plug is designed to deliver dependable ignition performance for compatible high-performance gasoline engines. Manufactured by NGK Spark Plugs, this plug uses a copper-core center electrode to support efficient heat removal and consistent operation under demanding conditions. Its design is intended for applications that require reliable spark delivery, durable construction, and effective control of operating temperatures.
Built for compatible engine applications using the R5671A-9 model specification, this spark plug features a pure alumina silicate ceramic insulator. The insulator provides high mechanical strength while promoting improved heat transfer from the firing end. Trivalent metal plating helps resist corrosion and seizing, supporting easier servicing and long-term durability in challenging engine environments.
Triple sealing prevents combustion-gas leakage, while corrugated ribs help reduce the possibility of flashover along the insulator. These features work together to maintain stable ignition performance and dependable electrical insulation. Confirm vehicle, engine, and application compatibility before installation, as fitment may vary by make, model, engine configuration, and tuning requirements.
NGK Spark Plugs manufacturer part number 5238 identifies this R5671A-9 spark plug. It is suitable for compatible performance-oriented applications that call for this specific heat range and plug design. Always install and gap the spark plug according to the engine manufacturer's service specifications.
Features:
- Model: R5671A-9 spark plug for compatible high-performance gasoline engine applications
- Brand: NGK Spark Plugs
- Manufacturer Part Number: 5238
- Vendor Part Number: 5238
- Trivalent Metal Plating: Helps provide corrosion resistance and anti-seizing protection
- Ceramic Insulator: Pure alumina silicate construction supports strength and heat transfer
- Copper Core: Aids in efficient heat removal from the firing end
- Triple Seals: Help prevent combustion-gas leakage
- Corrugated Ribs: Help reduce the risk of electrical flashover
- Fitment: Designed for compatible vehicles and engines requiring the NGK R5671A-9 specification