NGK Standard Spark Plug (MPN: 6729)

Engineered for durability and optimal engine performance.

The NGK Standard Spark Plug is designed to deliver reliable ignition and efficient engine performance. 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 effective heat dissipation and longevity. The flat seat design and 1 ohm resistance contribute to its robust functionality in various engine applications.

Constructed with trivalent metal plating, the NGK spark plug offers superior anti-corrosion and anti-seizing properties, enhancing its durability in challenging environments. The corrugated ribs on the insulator prevent flashover, while the pure alumina silicate ceramic insulator provides exceptional strength and improved heat transfer. This combination of features ensures that the spark plug maintains optimal performance over time.

Additionally, the copper core aids in heat removal, and the triple seals effectively prevent leakage, making this spark plug a reliable choice for various automotive and marine applications. The U-groove electrode type further enhances ignition efficiency, making the NGK Standard Spark Plug a critical component for maintaining engine performance.

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: 6729
• 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

Technical Documents

• 6729_Marine_Apps.pdf