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NGK 7784 Spark Plug
| Brand | NGK 7784 |
|---|---|
| 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 | .032 |
| Ground Electrode Quantity | 1 |
| Hex Size | 5/8 |
| Insulator Height | 50.50 |
| Manufacturer Heat Range | 8 |
| Seat Type | Flat |
| Reach | .75 |
| Thread Diameter | 10.00 |
| Part Number | Cr8eb |
| Stock Number | 7784 |
| Fits | — |
OE supplier heritage. Built by NGK, a long-time original equipment spark plug manufacturer.
Copper core design. Helps promote consistent ignition performance and durability.
Standard spark plug. A straightforward replacement for everyday ignition service.
Cross-references NGK 7784, 12 12 7 653 439 and 0217-813 for the same application. See all 9.
NGK CR8EB Spark Plug for Reliable Ignition
The NGK 7784 spark plug is a standard replacement ignition component built with a copper center electrode core, nickel tip materials, and a 5,000 ohm resistor for stable spark delivery. It is a direct-fit style spark plug for applications that call for NGK CR8EB specifications, including select Honda Civic and Honda Accord engine setups where the correct heat range and thread dimensions matter.
Key Features
- NGK Standard Spark Plug line for OE-style ignition service
- Part number 7784, also identified as CR8EB
- 5000 ohm resistance for radio noise suppression
- Copper center electrode core with nickel tip material
- Nickel ground electrode with standard ground configuration
- Pre-gapped at .032 for specified applications
- 10.00 mm thread diameter, .75 reach, flat seat
- 5/8 hex size with non-removable nut terminal
- Manufacturer heat range 8 for specified engine requirements
Product Details
NGK’s Standard Spark Plug line focuses on dependable OE replacement performance for domestic and import vehicles. The 7784 spark plug uses a copper core to support consistent heat transfer, while the nickel center and ground electrode tips provide a conventional design suited to everyday ignition service. With its flat seat, .75 reach, and 10.00 mm thread diameter, this plug is built for engines that specify the CR8EB configuration. For buyers searching for a Honda Civic spark plug or Honda Accord spark plug by part number, NGK 7784 is the reference to verify against the original application.
This part cross-references BMW 12 12 7 653 439 and Honda 98079-570B1 for the same application.
Common Issues This Spark Plug Can Address
- Hard starting caused by worn or fouled spark plugs
- Rough idle from inconsistent spark delivery
- Misfire conditions related to aged ignition components
- Reduced fuel economy from inefficient combustion
- Weak acceleration when plug wear increases firing demand
Installation Notes and Tips
Verify the engine calls for NGK CR8EB / 7784 specifications before installation. Confirm thread diameter, reach, seat type, and pre-gap against the service manual for the exact Honda Civic or Honda Accord engine application. Inspect the ignition system, coil condition, and plug well area before installing the new plug, and torque to the manufacturer’s specification for the vehicle.
Quality Assurance
NGK is a long-established OE supplier with broad coverage across domestic and import vehicles, motorcycles, marine engines, and small engine applications. The brand’s North American manufacturing and distribution network supports consistent product availability and OE-level specification control for ignition service parts.
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