NGK DR6HS Spark Plug – Stock No. 4823
The NGK DR6HS is a reliable, resistor-type spark plug for many small petrol engines. It uses a 12 mm thread with a short reach, making it a common choice for motorcycles, scooters, ATVs, small cars, and marine outboards that specify this size. It delivers steady ignition, good starting, and consistent idle.
Use this when your engine calls for a 12 mm, gasket-seat plug with 1/2 inch reach and NGK heat range 6. It is a solid upgrade over worn plugs and helps maintain smooth performance and fuel economy.
- Resistor design helps reduce electrical noise that can affect the ECU or radios.
- Nickel alloy electrodes for dependable performance and long service life.
- Short reach for compact cylinder heads and small-capacity engines.
| Part Number | DR6HS |
| NGK Stock Number | 4823 |
| GTIN | 087295148235 |
| Part Category | 686 – Spark Plug |
| Thread Diameter | 12 mm |
| Thread Reach | 12.7 mm – 0.5 inch (H) |
| Hex Size | 18 mm |
| Seat Type | Flat seat with gasket |
| Heat Range | 6 (NGK scale) |
| Resistor | Yes (R) |
| Centre Electrode | Nickel alloy |
| Ground Electrode | Standard single ground |
| Projection | Standard |
| Factory Gap | Approx. 0.7 mm – always set to the engine spec |
| Terminal Type | Solid terminal |
Fitment guidance
This plug fits many small-capacity petrol engines that require a 12 mm thread, 1/2 inch reach, gasket seat, and NGK heat range 6. Common across various motorcycles, scooters, ATVs, and marine outboards. Use the vehicle lookup to confirm, or check the Vehicle Fitment tab for full details.
Important: Always confirm thread size, reach, seat type, and heat range against your engine manual before installation. Set the gap to the manufacturer specification.
The price displayed is for a single plug, please add the desired amount to your basket.


