NGK 3923 Spark Plug

Reliable Ignition with NGK Standard Spark Plug 3923

The NGK Standard Spark Plug 3923 is engineered to deliver consistent ignition performance for select Maserati and Porsche models. Designed with durable materials and precise specifications, this spark plug supports efficient combustion and engine reliability.

• Resistance: 5000 ohms for optimal electrical performance
• Ground Electrode Tip and Configuration: Standard design with a single nickel core electrode
• Center Electrode: Copper core with nickel tip for balanced conductivity and durability
• Pre-Gap Size: Factory set at .032 inches for precise spark delivery
• Thread Diameter: 14 mm with a reach of .75 inches and flat seat type
• Hex Size: 13/16 inch for standard installation tools
• Electrical Terminal: Removable nut for flexible connection options
• Manufacturer Heat Range: 8, suitable for specific engine requirements
• Insulator Height: 55 mm for proper fit and insulation

About the NGK Standard Spark Plug Line

The Standard Spark Plug line from NGK is designed to meet OEM specifications for a wide range of vehicles, including performance-oriented models like the Maserati Biturbo and Porsche 911. These spark plugs provide reliable ignition with materials and designs that balance durability and conductivity, making them suitable for everyday driving conditions and maintaining engine efficiency.

Technical Details and Compatibility

This NGK spark plug, part number 3923 (also referenced as Bpr8es), features a nickel ground electrode and copper core center electrode, which together ensure stable spark generation and resistance to electrode wear. The 5000-ohm resistance helps reduce electrical noise interference, supporting smooth engine operation. Its flat seat and 14 mm thread diameter with a .75-inch reach make it compatible with specific Maserati and Porsche engines, including the Maserati Biturbo and Porsche 430i and 911 models.

Applications and Problem Solving

• Restores proper ignition timing and spark delivery in Maserati Biturbo and Porsche 911 engines
• Reduces misfires caused by worn or damaged spark plugs
• Improves fuel efficiency by ensuring complete combustion
• Minimizes engine hesitation and rough idling
• Supports stable engine performance under various driving conditions

Installation Notes and Tips

When installing the NGK Standard Spark Plug 3923, ensure the pre-gap of .032 inches is maintained for optimal spark performance. Use a 13/16 inch socket for installation and verify the flat seat properly mates with the cylinder head. The removable nut terminal allows for flexible ignition wire connections. Always torque to manufacturer specifications to avoid damage to the spark plug or engine components.

Quality Assurance and Warranty

NGK spark plugs are manufactured to meet strict quality standards, ensuring consistent performance and durability. The Standard Spark Plug line undergoes rigorous testing for heat range, resistance, and electrode integrity. While specific warranty details may vary, NGK products typically come with manufacturer-backed quality assurance to support reliable ignition system operation.