NGK 2300 Spark Plug

NGK Laser Platinum Spark Plug for OE-Style Ignition Performance

NGK Laser Platinum Spark Plug 2300 is built for drivers who want a direct-fit ignition component with OE-level construction and consistent spark delivery. This plug uses a platinum center electrode, nickel ground electrode, and a 0.044 in. pre-gap to support stable ignition performance in a range of Nissan, Infiniti, and Subaru applications.

The Laser Platinum line focuses on long service life and original-equipment standards, making it a practical choice for maintenance on vehicles such as the Nissan Sentra, Nissan Altima, and Subaru Legacy. Part number PFR5B-11 is also identified by stock number 2300.

Key Features

• Platinum center electrode tip for durable spark delivery
• Nickel ground electrode with standard ground configuration
• 0.044 in. pre-gap for listed applications
• 5,000 ohm resistance
• 14 mm thread diameter with flat seat design
• 5/8 in. hex size for common service tools
• Copper core center electrode for heat transfer
• NGK Laser Platinum Spark Plug line built around OE-style standards

Product Details

NGK part number PFR5B-11, stock number 2300, is a Laser Platinum spark plug engineered for secondary ignition service where precise fit and consistent combustion matter. The plug features a platinum tip on the center electrode, a nickel ground electrode core, and a non-removable nut terminal. With a 0.75 in. reach, flat seat, and manufacturer heat range 5, it matches the specifications called out for listed Nissan, Infiniti, and Subaru engines.

This part cross-references Autolite APP3924 and Gates 2300 for the same application. It is a direct replacement option for vehicles including the Nissan Sentra, Nissan Altima, Nissan 300ZX, and Subaru Legacy when the listed OE specification calls for this plug type.

Common Issues This Spark Plug Can Address

• Hard starting caused by worn or fouled spark plugs
• Rough idle from inconsistent ignition output
• Misfire conditions tied to aged secondary ignition components
• Reduced fuel economy from degraded spark quality
• Service intervals overdue on OE-specified applications

Installation Notes and Fitment Tips

• Fits 1991-1999 Nissan Sentra, N/A; gap 0.044"; recommended replacement plug is IFR5E11 (Stock # 7994)
• Fits 1993-1998 Nissan Altima, N/A; gap 0.044"; recommended replacement plug is IFR5E11 (Stock # 7994)
• Fits 1990-1996 Nissan 300ZX, N/A; gap 0.044"; actual OE manufacturer; 60,000 mi OE Mfr recommended service interval
• Fits 1996-1999 Subaru Legacy, N/A; gap 0.044"; actual OE manufacturer; 60,000 mi OE Mfr recommended service interval
• Fits 1998 Subaru Forester, N/A; gap 0.044"; actual OE manufacturer; 60,000 mi OE Mfr recommended service interval
• Fits 1998 Subaru Impreza, N/A; gap 0.044"; actual OE manufacturer; 60,000 mi OE Mfr recommended service interval
• Fits 1997 INFINITI QX4, N/A; gap 0.044"; recommended replacement plug is IFR5E11 (Stock # 7994)
• Fits 1996-1997 Nissan Pathfinder, N/A; gap 0.044"; recommended replacement plug is IFR5E11 (Stock # 7994)
• Fits 1990-1993 INFINITI Q45, N/A; gap 0.044"; actual OE manufacturer; 60,000 mi OE Mfr recommended service interval
• Fits 1991-1993 Nissan 240SX, N/A; gap 0.044"; recommended replacement plug is IFR5E11 (Stock # 7994)
• Fits 1991-1993 Nissan NX, N/A; gap 0.044"; recommended replacement plug is IFR5E11 (Stock # 7994)
• Verify thread diameter, reach, seat type, and pre-gap before installation on Nissan and Subaru engines.

Quality Assurance

NGK is a long-established OE supplier and manufacturer serving domestic and import vehicles across North America. The brand’s manufacturing focus on original-equipment standards and broad vehicle coverage supports dependable service for applications that specify NGK Laser Platinum Spark Plug 2300.