NGK Spark Plugs Standard Spark Plug (MPN: 3923)

Reliable performance for a variety of engine applications.

The NGK Spark Plugs Standard Spark Plug is designed to provide consistent performance in a wide range of engines. This spark plug features a triple-gasket sealing process that ensures optimal sealing and prevents leakage, contributing to the longevity and efficiency of the engine. With its nickel electrode core and tip materials, this spark plug is built to withstand high temperatures and pressures, making it a dependable choice for millions of vehicles worldwide.

This single spark plug is engineered to meet OEM quality standards, ensuring that it performs reliably in various applications, including marine engines. The projected insulator type and gasket seat design enhance the spark plug's performance by promoting better combustion and reducing misfires. The 0.551-inch thread size and 3/4-inch reach make it compatible with a wide range of engine configurations, providing versatility for mechanics and vehicle owners alike.

Features

• OEM Quality
• Triple-Gasket Sealing Process
• Consistent Performance
• Plug Of Choice In Millions Of Vehicles

Specifications

• Manufacturer: NGK Spark Plugs
• Manufacturer Part Number: 3923
• Resistor: Yes
• Electrode Type: Standard
• Electrode Core Material: Nickel
• Electrode Tip Material: Nickel
• Insulator Type: Projected
• Thread Size (IN): 0.551 Inch
• Quantity: Single
• Reach: 3/4 Inch
• Seat Type: Gasket
• Wrench Diameter: 13/16 Inch

Compatibility / Fit

• 2004-2007 Aprilia Mojito Custom 50
• 1968-1968 Ferrari 275 GT
• 1964-1968 Ferrari 275 GTB
• 1968-1969 Ferrari Dino 206 GT
• 1969-1973 Ferrari Dino 246 GT
• 1972-1973 Ferrari Dino 246 GTS
• 1988-1989 Kawasaki KD80
• 1989-1990 Maserati 430i
• 1983-1987 Maserati Biturbo
• 2002-2004 Polaris Freedom
• 1996-1997 Polaris Hurricane
• 2000-2001 Polaris Pro 1200
• 1997-1997 Polaris SL 1050
• 1997-1997 Polaris SL 700
• 1996-1997 Polaris SL 780
• 1996-1997 Polaris SL 900
• 1999-2001 Polaris SLH
• 1996-1997 Polaris SLT 780
• 1999-1999 Polaris SLTH
• 1996-1999 Polaris SLTX
• 1999-1999 Polaris SLTX-B
• 1999-1999 Polaris SLX
• 1996-1996 Polaris SLX 780
• 1970-1971 Porsche 911
• 1974-1977 Porsche 911
• 1986-1989 Porsche 911
• 1978-1979 Porsche 930
• 1981-1983 Yamaha XJ650L Turbo Seca
• 1985-1985 Yamaha XJ700 Maxim

Technical Documents

• 3923_Marine_Apps.pdf