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NGK 1097 Spark Plug
| Brand | NGK 1097 |
|---|---|
| Resistance | 5000 |
| Ground Electrode Tip Design | Standard |
| Ground Configuration | Standard |
| Ground Electrode Core Material | Nickel |
| Electrical Terminal Type | Removable nut |
| Center Electrode Core Material | Copper |
| Center Electrode Tip Material | Nickel |
| Pre-Gap Size | .032 |
| Ground Electrode Quantity | 1 |
| Hex Size | 13/16 |
| Insulator Height | 55.00 |
| Manufacturer Heat Range | 4 |
| Seat Type | Flat |
| Reach | .75 |
| Thread Diameter | 14.00 |
| Part Number | Br4es |
| Stock Number | 1097 |
| Fits | — |
OE supplier heritage. Built by NGK, a long-standing spark plug manufacturer with original equipment standards.
Copper core design. Helps support reliable ignition performance and consistent operation.
Standard spark plug. A direct-fit replacement for many ignition applications.
Cross-references MTC/Ronak 1097, 90793-20128 and 94702-00343 for the same application. See all 3.
NGK BR4ES Spark Plug Overview
The NGK BR4ES spark plug is a standard replacement ignition component built with a copper center electrode core, nickel center and ground electrode tips, and a 5,000 ohm resistor for stable secondary ignition performance. As part of NGK’s Standard Spark Plug line, it reflects the brand’s OE-focused approach for dependable service in a wide range of domestic and import applications.
Use NGK 1097 when you need a direct-fit spark plug identified by part number BR4ES. It is commonly searched for motorcycle, marine, and small engine service as well as automotive maintenance, and it is a practical choice for owners looking for an NGK spark plug BR4ES replacement.
Key Features
- NGK Standard Spark Plug line for OE-style service replacement
- Copper center electrode core for consistent conductivity
- Nickel center and ground electrode tip materials
- 5,000 ohm resistor for ignition noise suppression
- Standard ground electrode design with one ground electrode
- Flat seat, 14 mm thread diameter, 0.75 in reach
- Pre-gapped to .032 for common service applications
- 13/16 hex size with removable nut terminal
Product Details
NGK has long supplied original equipment spark plugs for domestic and import vehicles in North America, and the Standard Spark Plug line is built around that OE service philosophy. Part number 1097, also identified as BR4ES, uses a copper core center electrode with nickel tips to support reliable spark delivery and everyday drivability. The flat seat design, 14 mm thread diameter, and .75 inch reach make it a straightforward replacement for applications that call for this specification. This NGK 1097 spark plug is a common search term for drivers servicing compatible Honda and other small-engine applications.
This part cross-references MTC/Ronak 1097 for the same application.
Common Issues This Spark Plug Can Address
- Hard starting caused by worn or fouled spark plugs
- Rough idle from inconsistent ignition firing
- Misfire symptoms related to degraded plug electrodes
- Reduced throttle response from weak spark delivery
- Ignition noise concerns in resistor-equipped systems
Installation Notes and Tips
Verify the required heat range, thread diameter, reach, seat type, and terminal style before installation. The pre-gap is listed at .032, but final gap should always be checked against the vehicle or engine specification before service. For Honda and other compatible applications, confirm the exact engine code and plug specification to ensure the NGK BR4ES matches the original requirement.
Quality Assurance
NGK is a major OE spark plug supplier with decades of automotive manufacturing experience and global production and distribution support. The brand’s Standard Spark Plug line is built to original equipment standards for durability and consistent operation across automotive, motorcycle, marine, and small engine applications.
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