NGK SPARK PLUG R7376-10 4457

NGK Iridium Racing IX Spark Plug – R7376-10 / R737610 (4457)

Features:

• Revolution in spark plug technology, featuring a highly advanced iridium electrode.
• Iridium electrode is 25% smaller than platinum and 1/4 the size of a conventional nickel electrode.
• Ultra-small diameter center electrode reduces voltage requirements, prolonging ignition system life.

Fine wire iridium center electrode and platinum-tipped ground electrode ensure a slow wear rate, providing:

• Stable idle.
• Superior anti-fouling.
• Improved fuel efficiency.
• Lower emissions.
• Metal shell plating with enhanced anti-corrosion properties for durability.
• Special insulator nose design improves throttle response.
• Corrugated ribs prevent flashover, ensuring consistent performance.
• Pure alumina silicate ceramic insulator delivers superior strength and efficient heat transfer.
• Copper core aids in effective heat dissipation.
• Triple seals prevent leakage.
• Designed for high-performance engines under extreme conditions.
• Sold individually.

Specifications:

• Part Number: 37-R7376-10 (oro2u.com)
• NGK Reference Number: 4457
• Heat Range: 10
• Thread Size: 14 mm
• Thread Reach: Not specified, but typically 19 mm (3/4″) for similar plugs
• Hex Spanner Size: Not specified, but likely 16 mm (5/8″) based on similar plugs
• Seal Type: Gasket Seat
• Terminal Type: Resistor
• Electrode Material: Fine Wire Iridium Center Electrode, Platinum-Tipped Ground Electrode
• Pack Size: Single Unit
• Weight: 0.12 lbs

Compatible Models:

Honda:

• RS125: 1987–1997

Additional Information:
This NGK Iridium Racing IX Spark Plug is engineered for high-performance applications, including motorcycles, minibikes, mopeds, and scooters. Its advanced materials and design ensure durability, reliable ignition, and superior engine performance under extreme racing conditions. Ideal for Honda RS125 (1987–1997) and other high-performance models.