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NGK 7986 Spark Plug
| Brand | NGK 7986 |
|---|---|
| Resistance | 5000 |
| Ground Electrode Tip Design | Standard |
| Ground Configuration | Standard |
| Ground Electrode Core Material | Nickel |
| Electrical Terminal Type | Non-removable nut |
| Center Electrode Core Material | Copper |
| Center Electrode Tip Material | Nickel |
| Pre-Gap Size | .044 |
| Ground Electrode Quantity | 1 |
| Hex Size | 13/16 |
| Insulator Height | 55.00 |
| Manufacturer Heat Range | 8 |
| Seat Type | Flat |
| Reach | .75 |
| Thread Diameter | 14.00 |
| Part Number | Br8es-11 |
| Stock Number | 7986 |
| Fits | — |
OE supplier heritage. Built by NGK, a long-time original equipment spark plug manufacturer.
Copper core. Helps promote consistent ignition performance and heat transfer.
Standard design. A straightforward spark plug with a flat seat and non-removable nut.
Cross-references Carlson 7986, 94702-00396 and 94709-00396 for the same application. See all 3.
NGK BR8ES-11 Spark Plug for Secondary Ignition
The NGK 7986 spark plug is a standard replacement ignition component built around NGK’s OE-focused manufacturing approach. It uses a copper center electrode with nickel tip materials, a nickel ground electrode, and a 0.044 pre-gap for consistent spark delivery in the correct application.
Compatible with select motorcycle, marine, and small engine applications, this NGK Standard Spark Plug line is designed for dependable secondary ignition performance where a flat seat, 14 mm thread, and 0.75 reach are required. The BR8ES-11 part number is also referenced as 7986 for ordering and catalog lookup.
Key Features
- NGK Standard Spark Plug line for OE-style ignition service
- Part number BR8ES-11 / stock number 7986
- Copper center electrode core with nickel tip material
- Nickel ground electrode with standard configuration
- 0.044 pre-gap size for specified applications
- 5000 ohm resistance
- Flat seat, 14 mm thread diameter, 0.75 reach
- 13/16 hex size and non-removable nut terminal
Product Details
NGK builds this spark plug for applications that call for a standard heat range 8 plug with a flat seat and conventional electrode design. The BR8ES-11 / 7986 specification includes a single nickel ground electrode, copper core center electrode, and standard ground tip design to support stable ignition performance in the correct engine setup. NGK’s long-standing OE supply background and North American manufacturing and distribution network support consistent product availability and specification control.
This part cross-references Carlson 7986 for the same application.
Common Issues This Part Can Address
- Hard starting caused by worn or fouled spark plugs
- Misfire from weak or inconsistent spark output
- Rough idle related to degraded ignition performance
- Reduced throttle response from aged secondary ignition components
- Maintenance replacement for engines requiring BR8ES-11 / 7986 specifications
Installation Notes and Tips
Verify the engine calls for a 14 mm, flat-seat spark plug with 0.75 reach and 0.044 pre-gap before installation. Check the service manual for the correct torque specification and inspect the ignition lead, coil, and plug boot condition at the same time. For vehicle-specific searches, this NGK 7986 spark plug is commonly referenced in motorcycle and small-engine fitment queries, including Honda Civic and Toyota Corolla keyword searches only when the exact application is confirmed by the vehicle catalog.
Quality Assurance
NGK is a major OE spark plug supplier with extensive coverage across domestic and import applications. The BR8ES-11 / 7986 is manufactured to support original-equipment-level specification control and consistent ignition service in approved applications.
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