NGK 92373 Spark Plug

NGK Laser Iridium Spark Plug for OE Ignitability

NGK 92373 is a Laser Iridium High Ignitability spark plug built for precise ignition performance and OE-style service intervals. It is a direct-fit spark plug for select Suzuki SX4 and Suzuki SX4 Crossover applications, with fitment matched to the factory high ignitability specification.

Key Features

• Laser Iridium center electrode tip for stable spark delivery
• Square platinum ground electrode tip design for high ignitability
• 0.044 in pre-gap size for listed applications
• 5000 ohm resistance
• Copper core center electrode and nickel ground electrode core material
• Flat seat, 14.00 mm thread diameter, 5/8 hex size
• NGK part number 92373, OE reference SILFR5A11

Product Details

This NGK Laser Iridium High Ignitability spark plug is engineered around the attributes commonly specified for modern ignition systems: iridium center electrode tip material, a square platinum ground electrode tip design, and a factory-style 0.044 inch gap. The non-removable nut terminal, flat seat, and 26.5 reach support OE-style service fitment for the listed Suzuki applications. NGK’s long OE supply history and broad coverage across automotive applications make this a practical replacement choice when the original plug calls for high ignitability performance. This part cross-references Four Seasons (e.g., 92373) for the same application.

Compatible With 2010-2013 Suzuki SX4 and 2012 Suzuki SX4 Crossover. Use NGK 92373 when replacing the factory high ignitability spark plug specified for these vehicles.

Common Issues This Part Helps Address

• Hard starting caused by worn spark plug electrodes
• Rough idle from inconsistent ignition output
• Misfire conditions tied to plug wear or incorrect gap
• Reduced throttle response from degraded spark quality
• Service replacement for OE high ignitability spark plug intervals

Installation Notes and Tips

Verify the vehicle’s OE spark plug specification before installation. The listed applications use a 0.044 inch gap, so confirm gap condition against the service manual and inspect coil boots, threads, and sealing surfaces during replacement. Use the correct 5/8 inch spark plug socket and torque to the manufacturer’s specification for the engine.

Quality Assurance

NGK is a major OE spark plug supplier with extensive North American manufacturing and distribution support. Part number 92373 is built to meet original equipment standards for the listed Suzuki SX4 and Suzuki SX4 Crossover applications.