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NGK 9356 Spark Plug
| Brand | NGK 9356 |
|---|---|
| Resistance | 5000 |
| Ground Electrode Tip Design | Pin type |
| Ground Configuration | Slant |
| Ground Electrode Core Material | Nickel |
| Electrical Terminal Type | Non-removable nut |
| Center Electrode Core Material | Copper |
| Center Electrode Tip Material | Iridium |
| Pre-Gap Size | .028 |
| Ground Electrode Quantity | 1 |
| Hex Size | 14 |
| Insulator Height | 50.00 |
| Manufacturer Heat Range | 8 |
| Seat Type | Flat |
| Reach | 26.5 |
| Thread Diameter | 10.00 |
| Part Number | R0451b-8 |
| Stock Number | 9356 |
| Fits | — |
Iridium tip. Promotes consistent spark and dependable ignition performance.
Copper core. Helps transfer heat efficiently for stable operation.
OE legacy. Backed by NGK's long automotive manufacturing experience.
Cross-references MTC/Ronak 9356 and 31908-KRN-A41 for the same application. See all 2.
NGK Racing Spark Plug 9356 Overview
NGK Racing Spark Plug 9356 is built for ignition systems that demand stable spark delivery and precise electrode design. This NGK spark plug combines an iridium center electrode with a copper core and a nickel ground electrode to support consistent combustion in performance-focused applications.
As part of NGK’s Racing Spark Plug line, this plug reflects the brand’s long OE manufacturing background and its focus on durable ignition components for automotive, motorcycle, marine, and small engine use. It is a direct-fit style spark plug for select applications, including Honda Civic and Acura Integra fitments where specified.
Key Features
- NGK Part Number 9356, also identified as R0451B-8
- Iridium center electrode tip for precise spark delivery
- Copper center electrode core for efficient heat transfer
- Nickel ground electrode with pin-type tip design
- Slant ground configuration with one ground electrode
- Pre-gapped at .028 for specified applications
- 5000 ohm resistance for ignition system compatibility
- Flat seat design with 10.00 mm thread diameter and 14 mm hex size
- Manufacturer heat range 8
Detailed Description
NGK 9356 is a racing spark plug engineered around an iridium tip and a copper-core center electrode to support reliable ignition performance under demanding operating conditions. The pin-type ground electrode, slant configuration, and flat seat design help define the plug’s operating characteristics, while the .028 pre-gap supports the specified application setup. For buyers searching for NGK 9356, R0451B-8, or an iridium racing spark plug for Honda Civic and Acura Integra applications, this part provides a focused OE-style ignition solution.
NGK’s North American OE manufacturing experience is reflected in the brand’s emphasis on durability, inventory support, and broad vehicle coverage. This part cross-references MTC/Ronak 9356 for the same application.
What It Helps Address
- Misfires caused by worn or inconsistent spark plugs
- Hard starting related to weak ignition output
- Rough idle from degraded electrode condition
- Loss of throttle response from unstable combustion
- Ignition performance issues in performance or racing use
Installation Notes and Tips
Verify thread diameter, reach, seat type, and heat range before installation. Confirm the gap specification against the vehicle service information for the exact application, especially when replacing plugs in Honda Civic or Acura Integra engines. Use proper torque procedures and inspect ignition components for wear before installing NGK 9356.
Quality Assurance
NGK is a long-established OE spark plug manufacturer with extensive North American coverage and production experience. Part number 9356 is built to NGK’s original-equipment-oriented standards for durability and operational consistency.
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