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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.
Will it fit your vehicle?
Free return shipping if it doesn't fit.
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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