| Product Type | Spark Plug |
|---|---|
| Product Group | Ignition & Electrical Parts |
NGK SPARK PLUG R5673-8 3249
NGK Racing Spark Plug – R5673-8 / R56738 (4140)
Features:
- Designed to withstand the harshest engine conditions.
V-Power plugs feature a unique V-cut in the center electrode, directing the spark to the edge for:
- Faster spark development.
- Improved ignitability.
- Reduced quenching.
- Special insulator nose configuration enhances throttle response.
- Trivalent metal plating ensures superior anti-corrosion and anti-seizing properties.
- Corrugated ribs prevent flashover.
- Pure alumina silicate ceramic insulator provides superior strength and better heat transfer.
- Copper core aids in efficient heat removal.
- Triple seals prevent leakage.
- Sold individually.
Specifications:
- Part Number: 37-R5673-8 (oro2u.com)
- NGK Reference Number: 4140
- Thread Reach: 11.2 mm (7/16″)
- Thread Diameter: 14 mm
- Terminal Type: Fixed Terminal
- Electrode Material: V-Grooved Nickel
- Hex Spanner Size: 16 mm (5/8″)
- Type: Non-Resistor
- Pack Size: Single Unit
Additional Information:
This racing spark plug is engineered for high-performance engines, providing superior ignitability, durability, and throttle response under extreme conditions. The V-groove design enhances combustion efficiency and power, making it ideal for racing applications that demand maximum reliability and performance.
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