NGK 6801 Spark Plug

NGK Iridium IX Spark Plug 6801 Overview

The NGK Iridium IX Spark Plug 6801 is built for precise ignition performance in a wide range of import and domestic applications. It uses an iridium center electrode, a nickel ground electrode, and a 0.032 pre-gap to support consistent spark delivery and stable combustion.

As part of the NGK Iridium IX Spark Plug line, this plug is engineered for drivers who want OE-level fit and dependable ignition performance. NGK’s long history as an OE supplier and ignition specialist is reflected in the BR10EIX design, which is commonly searched for by riders and owners looking for NGK 6801 replacement spark plug options.

Key Features

• Iridium center electrode tip for durable spark performance
• Copper core center electrode for efficient heat transfer
• Nickel ground electrode with taper-cut tip design
• Standard ground configuration with one ground electrode
• 5000 ohm resistance for ignition system compatibility
• Flat seat design, 14.00 mm thread diameter, and 0.75 reach
• Removable nut terminal for flexible connection setup
• Manufacturer heat range 10
• 13/16 hex size for service access

Detailed Description

The NGK 6801 spark plug is a BR10EIX-style iridium plug built around a copper core center electrode and an iridium tip to support reliable ignition in demanding engine conditions. Its 0.032 pre-gap, flat seat, and 14.00 mm thread diameter make it a direct-spec replacement for applications that call for this configuration. Search terms such as NGK BR10EIX spark plug, NGK 6801 replacement, and iridium spark plug for motorcycle or small engine ignition often point to this part.

NGK manufactures spark plugs for a broad range of automotive, motorcycle, marine, and small engine applications, and that OE-focused background is reflected in the construction of this plug. This part cross-references DENSO Auto Parts (e.g., 5318, 5319) for the same application.

Common Issues This Part Can Help Address

• Hard starting caused by worn or fouled spark plugs
• Misfire symptoms from weak or inconsistent spark output
• Rough idle related to degraded ignition performance
• Reduced throttle response from inefficient combustion
• Service intervals affected by electrode wear

Installation Notes and Tips

Verify the required thread diameter, reach, seat type, heat range, and terminal style before installation. Check and confirm the gap specification against the engine’s service requirements, and inspect the ignition system for carbon tracking, oil fouling, or damaged boots before installing the new plug. For vehicle-specific searches, use the exact application details for Honda, Yamaha, and other make/model listings that call for NGK 6801 or BR10EIX.

Quality Assurance

NGK is a long-established OE supplier with extensive North American and global manufacturing and distribution support. The brand’s focus on original equipment standards, durability, and operational performance supports consistent product quality across ignition applications.