NGK 6208 Spark Plug

NGK 6208 Standard Spark Plug Overview

NGK 6208 is a standard spark plug built with a copper center electrode core, nickel center electrode tip, and nickel ground electrode components for consistent ignition performance. It uses a 5/8 hex, 10 mm thread diameter, .5 reach, flat seat, and a pre-gap size of .028 for applications that call for this specification.

As part of the NGK Standard Spark Plug line, this plug reflects NGK’s long OE supply background and focus on original-equipment-level manufacturing for domestic and import vehicles. The LR8B / 6208 specification is a direct replacement choice for drivers searching for NGK 6208 spark plug, LR8B spark plug, or a standard copper-core spark plug for select vehicle service.

Key Features

• NGK Standard Spark Plug line for OE-style ignition service
• Copper center electrode core for stable conductivity
• Nickel center electrode tip and nickel ground electrode tip design
• 5000 ohm resistance for ignition system compatibility
• .028 pre-gap size, 10 mm thread diameter, and .5 reach
• Flat seat design with non-removable nut terminal
• Part number 6208, also identified as LR8B

Detailed Product Description

NGK 6208 is a standard spark plug engineered around proven materials and dimensions commonly specified in ignition service. The copper core supports efficient heat transfer, while the nickel electrode materials provide a conventional firing surface for routine maintenance and replacement. With a manufacturer heat range of 8, this plug is built to match applications that require this thermal specification.

For shoppers comparing NGK 6208, LR8B, and standard spark plug options, this part is a practical fit for select vehicles that use a 10 mm, flat-seat plug with .5 reach and .028 gap. It is commonly searched for by owners looking for spark plug replacement for select Honda Civic applications and other vehicle-specific ignition service needs.

What It Helps Address

• Engine misfire caused by worn or fouled spark plugs
• Hard starting from weak ignition output
• Rough idle related to inconsistent spark delivery
• Reduced throttle response from degraded plug performance
• Maintenance replacement for vehicles calling for NGK 6208 / LR8B

Installation Notes and Tips

Verify the required thread diameter, reach, seat type, heat range, and pre-gap before installation. Confirm the vehicle’s ignition specification and compare the removed plug to NGK 6208 / LR8B to ensure the correct replacement. Use proper spark plug service procedures and torque to the vehicle manufacturer’s specification.

Compatible With select Honda Civic applications where the OE specification matches this plug design. Fits 2006-2011 Honda Civic, when the application calls for this exact NGK 6208 / LR8B configuration.

Quality Assurance

NGK is a major OE spark plug supplier with decades of automotive manufacturing experience and broad coverage across domestic and import vehicle applications. This part is produced to support original-equipment standards for durability and operational consistency.