NGK 6193 Spark Plug

NGK JR9C Standard Spark Plug

NGK 6193 is a standard spark plug built for dependable ignition performance in a wide range of domestic and import applications. It uses a copper center electrode core, nickel center electrode tip, and nickel ground electrode materials to support consistent spark delivery and stable combustion.

As part of the NGK Standard Spark Plug line, this plug reflects the brand’s OE-focused approach to ignition components. NGK is known for manufacturing spark plugs for automotive, motorcycle, marine, and small engine use, with production and distribution support across North America and global facilities.

Key Features

• Part number: 6193
• NGK JR9C spark plug design
• Standard ground electrode tip and standard ground configuration
• Copper center electrode core with nickel center electrode tip
• Nickel ground electrode core material
• 5000 ohm resistance
• Pre-gapped to .028
• 12.00 mm thread diameter with .75 reach
• Flat seat type and 18 mm hex size
• Manufacturer heat range: 9
• Electrical terminal type: stud
• Two ground electrodes

Product Details

NGK 6193 is a conventional spark plug for drivers and technicians looking for a direct ignition service part with OE-style construction. The copper core helps support heat transfer, while the nickel electrode materials and standard electrode layout are selected for consistent firing characteristics. This part cross-references AMS Automotive 6193 for the same application.

Compatible With select vehicle applications where NGK JR9C / 6193 is specified, including Honda Civic and other make/model listings tied to this part number. Use the vehicle’s service information to confirm thread diameter, reach, seat type, and heat range before installation. Search terms such as NGK 6193 spark plug, JR9C spark plug, and Honda Civic spark plug replacement are commonly used for this part.

Common Issues This Part Can Address

• Hard starting caused by worn or fouled spark plugs
• Rough idle from inconsistent ignition firing
• Misfire conditions related to degraded plug electrodes
• Reduced fuel economy from inefficient combustion
• Weak spark performance in routine tune-up service

Installation Notes and Tips

Verify the engine calls for a 12.00 mm thread diameter, .75 reach, flat seat, and 18 mm hex before installation. Check the gap specification against the vehicle service manual, and confirm the ignition system is in good condition to avoid repeat misfire concerns. For fitment-based searches, this part is often referenced as a Honda Civic spark plug replacement and as an NGK JR9C ignition service part.

Quality Assurance

NGK has over 80 years of automotive ignition experience and is a major OE supplier in North America. The brand’s manufacturing standards and OE-oriented engineering support consistent product quality for service replacement applications.