NGK 6931 Spark Plug

NGK BR6EB-L-11 Spark Plug for Honda

The NGK Standard Spark Plug 6931 is built for reliable ignition performance in select Honda applications. It uses a copper center electrode with nickel tip materials, a nickel ground electrode, and a 0.044-inch pre-gap to match OE specifications for the listed vehicles.

Key Features

• NGK Standard Spark Plug, part number 6931
• OE-style fitment for 1981-1983 Honda Accord and 1981-1982 Honda Prelude
• 0.044-inch pre-gap size for listed applications
• Copper center electrode core with nickel center electrode tip
• Nickel ground electrode core with standard ground configuration
• 5000 ohm resistance
• 14.00 mm thread diameter, 0.75 inch reach, flat seat
• 13/16 hex size with non-removable nut terminal

Detailed Description

NGK 6931, also identified as BR6EB-L-11, is a standard spark plug engineered for direct replacement use in select Honda Accord and Honda Prelude models. The plug’s copper core and nickel electrode construction support consistent spark delivery, while the 0.044-inch gap aligns with OE specifications for the listed fitments. NGK’s long-standing role as an OE supplier and its broad coverage across domestic and import applications make this spark plug a practical choice for maintenance on older Honda ignition systems.

This part cross-references Gates 6931 for the same application.

What It Helps Address

• Hard starting caused by worn or fouled spark plugs
• Rough idle from inconsistent ignition output
• Misfire conditions related to incorrect plug gap or electrode wear
• Reduced throttle response from degraded spark performance
• Maintenance replacement for aging Honda ignition service intervals

Installation Notes and Tips

Verify the plug gap before installation and confirm the 0.044-inch OE specification for the vehicle. Check thread reach, seat type, and hex size against the removed plug to ensure proper fit. For best results, inspect ignition wires, distributor components, and cylinder condition during spark plug service on 1981-1983 Honda Accord and 1981-1982 Honda Prelude models.

Quality Assurance

NGK manufactures spark plugs to OE standards and supports a wide range of automotive applications with established North American manufacturing and distribution capabilities. Part number 6931 is built to meet the specifications listed for the referenced Honda fitments.