NGK Standard Spark Plug (MPN: 707)

Engineered for durability and optimal performance in Yamaha outboards.

The NGK Standard Spark Plug is designed to enhance the performance and longevity of Yamaha outboard engines manufactured between 1987 and 2004. With a 14 millimeter thread size and a 1/2 inch reach, this spark plug features a nickel ground electrode core and a copper center electrode, ensuring efficient ignition and reliable operation. The flat seat design and 5000 ohm resistance contribute to its robust functionality in marine environments.

Constructed with trivalent metal plating, the NGK spark plug offers superior anti-corrosion and anti-seizing properties, making it suitable for harsh conditions. The corrugated ribs on the insulator prevent flashover, while the pure alumina silicate ceramic insulator provides exceptional strength and heat transfer capabilities. Additionally, the copper core aids in effective heat removal, ensuring optimal engine performance.

This spark plug is equipped with triple seals that prevent leakage, enhancing its reliability and efficiency. The U-groove electrode type further optimizes the spark for improved combustion. The NGK Standard Spark Plug is a critical component for maintaining the performance of Yamaha outboard engines, ensuring they operate smoothly and efficiently.

Features

• Trivalent Metal Plating Provides Superior Anti-Corrosion And Anti-Seizing Properties
• Corrugated Ribs Prevent Flash Over
• Pure Alumina Silicate Ceramic Insulator Provides Superior Strength And Better Heat Transfer
• Copper Core Aids In Heat Removal
• Triple Seals Prevent Leakage

Specifications

• Manufacturer: NGK Spark Plugs
• Manufacturer Part Number: 707
• Resistor: Yes
• Electrode Type: U-Groove
• Electrode Core Material: Copper
• Electrode Tip Material: Nickel
• Insulator Type: Projected
• Thread Size (IN): 0.551 Inch
• Quantity: Single
• Reach: 1/2 Inch
• Seat Type: Flat
• Wrench Diameter: 13/16 Inch Hex