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NGK 7823 Spark Plug
| Brand | NGK 7823 |
|---|---|
| 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 | .028 |
| Ground Electrode Quantity | 1 |
| Hex Size | 13/16 |
| Insulator Height | 55.00 |
| Manufacturer Heat Range | 4 |
| Seat Type | Flat |
| Reach | .5 |
| Thread Diameter | 14.00 |
| Part Number | Bpr4hs |
| Stock Number | 7823 |
| Fits | — |
OE supplier heritage. Built by NGK, a long-time original equipment spark plug manufacturer.
Copper core design. Helps promote consistent ignition performance and heat transfer.
Standard spark plug. A direct-fit replacement for common ignition service needs.
Cross-references AMS Automotive 4184, Carlson 7823 and Champion Spark Plug 929 for the same application. See all 26.
NGK Standard Spark Plug 7823 Overview
NGK Standard Spark Plug 7823 is a conventional replacement spark plug built for steady ignition performance in a wide range of gasoline engines. It uses a copper center electrode core, nickel center and ground electrode tips, and a standard ground configuration to support reliable spark delivery and consistent combustion.
As part of the NGK Standard Spark Plug line, this plug reflects NGK’s OE-focused approach to ignition components. The BPR4HS design features a 14 mm thread diameter, 0.5 in. reach, flat seat, removable nut terminal, and a pre-gap of .028 for straightforward service on applications that call for this specification.
Key Features
- NGK part number 7823, also identified as BPR4HS
- Standard spark plug design for routine ignition service
- Copper center electrode core for dependable conductivity
- Nickel center and ground electrode tip materials
- 5000 ohm resistance for ignition system compatibility
- 14 mm thread diameter with 13/16 hex size
- Flat seat and .5 in. reach
- Manufacturer heat range 4
- Removable nut electrical terminal
What This Spark Plug Helps Address
- Hard starting caused by worn or fouled spark plugs
- Rough idle from weak or inconsistent spark output
- Misfire conditions related to aged ignition components
- Reduced fuel efficiency from incomplete combustion
- Loss of throttle response in engines needing fresh plugs
Installation Notes and Fitment Tips
Compatible With applications that specify NGK BPR4HS / 7823 spark plug dimensions, including 14 mm thread diameter, .5 reach, flat seat, and .028 pre-gap. Verify the engine’s required heat range, terminal style, and seat type before installation. This part cross-references Champion Spark Plug 929 and Carlson 7823 for the same application.
For vehicle-specific searches, use terms such as NGK 7823 spark plug for BPR4HS applications, NGK 7823 replacement spark plug, and BPR4HS spark plug for engines requiring a 14 mm flat-seat plug. If you are servicing a Honda Civic or similar import application, confirm the exact plug specification against the vehicle’s service data before ordering.
Quality Assurance
NGK is a long-established OE supplier with broad coverage across domestic and import vehicles, motorcycles, marine engines, and small-engine applications. Its manufacturing and distribution network is built around original-equipment standards and consistent product control for ignition service parts.
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