NGK Standard Spark Plug (MPN: 90537)

Engineered for longevity and optimal performance in outboard engines.

The NGK Standard Spark Plug is designed to deliver reliable ignition and efficient engine performance. With a 14 millimeter thread size and a reach of 26.5 millimeters, this spark plug is compatible with various Mercury and Yamaha outboard engines from 2000 to 2006. The nickel ground electrode core and copper center electrode ensure effective heat dissipation, enhancing the overall functionality of the engine.

Constructed with trivalent metal plating, the spark plug offers superior anti-corrosion and anti-seizing properties, which contribute to its longevity. The corrugated ribs on the insulator prevent flashover, while the pure alumina silicate ceramic insulator provides exceptional strength and improved heat transfer. Additionally, the triple seals are designed to prevent leakage, ensuring optimal performance under various operating conditions.

This spark plug features a U-groove electrode type and a nickel center electrode tip, making it a robust choice for marine applications. With a resistance of 5000 ohms, it is engineered to meet the demands of high-performance outboard engines, ensuring reliable starts and efficient operation.

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: 90537
• 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: 1.04 Inch
• Seat Type: Flat
• Wrench Diameter: 5/8 Inch Hex