NGK 6884 Spark Plug

NGK LMAR9E-J Spark Plug for OE-Style Ignition Service

NGK Standard Spark Plug 6884 is built for drivers who want a direct-replacement spark plug with OE-focused construction and consistent ignition performance. This NGK spark plug uses a copper center electrode core, nickel center and ground electrode tips, and a standard ground configuration for dependable spark delivery in the right application.

With a 0.028 pre-gap, 5,000 ohm resistance, flat seat design, and 10.00 mm thread diameter, part number 6884 is engineered to match the specifications required by select vehicles and engine setups. It is also identified as LMAR9E-J, making it easier to confirm the correct NGK spark plug replacement for your service needs.

Key Features

• NGK Standard Spark Plug line for OE-style replacement service
• Part number 6884, also listed as LMAR9E-J
• Copper center electrode core with nickel center electrode tip
• Nickel ground electrode tip with standard ground configuration
• 5,000 ohm resistance for ignition system compatibility
• 0.028 pre-gap, flat seat, and 10.00 mm thread diameter
• 14 mm hex size and stud terminal type
• Manufacturer heat range 9 for specified engine applications

Product Details

NGK has long supplied spark plugs for domestic and import vehicles, and the Standard Spark Plug line focuses on original-equipment-style fit and function. This LMAR9E-J spark plug is built with a copper core for efficient heat transfer and nickel electrode materials for stable spark delivery. For service work on select Honda Civic applications and other specified vehicles, NGK 6884 provides the dimensions and electrical characteristics needed to match the engine’s ignition requirements.

This part cross-references Gates 6884 for the same application.

Common Issues This Spark Plug Can Address

• Hard starting caused by worn or fouled spark plugs
• Rough idle from inconsistent spark delivery
• Misfire conditions related to electrode wear
• Reduced fuel economy from degraded ignition performance
• Loss of throttle response from weak combustion events

Installation Notes and Tips

Verify the thread diameter, reach, seat type, and heat range against the engine specification before installation. Confirm the gap setting matches the vehicle requirement, since this plug is pre-gapped at 0.028 and should still be checked during service. Use proper torque procedures for flat-seat spark plugs and inspect ignition coils, boots, and wires during replacement to avoid repeat misfire concerns. For Honda Civic and other fitment-specific applications, confirm the exact engine code and service specification before ordering part number 6884.

Quality Assurance

NGK is a major OE spark plug supplier in North America with extensive coverage across automotive, motorcycle, marine, and small engine applications. Part number 6884 is manufactured to support original-equipment standards for durability and operational performance.