NGK DCPR8E Spark Plug – Stock No. 4179
The NGK DCPR8E is a reliable, standard-type spark plug for many motorcycle and powersports engines. It uses a projected tip and resistor design to give a clean, stable spark. This helps cold starts, smooth idle, and consistent performance under load. The NGK heat range 8 suits higher temperature applications, reducing the risk of pre-ignition.
| Part Number | DCPR8E |
| NGK Stock Number | 4179 |
| GTIN | 087295141793 |
| Category | 686 – Spark Plug |
| Thread Diameter | 12 mm |
| Thread Reach | 19 mm |
| Hex Size | 16 mm |
| Seat Type | Gasket |
| Heat Range | 8 (NGK scale) |
| Resistor | Yes |
| Tip Style | Projected |
| Electrode Material | Nickel alloy with copper core |
| Factory Gap | 0.8 mm (check and set to vehicle spec) |
| Typical Torque | 10-12 Nm (12 mm gasket seat, aluminium head) |
| Wrench Size | 16 mm (spark plug socket) |
What it does
This plug provides a strong spark to ignite the air-fuel mix. The resistor helps reduce electrical noise that can affect the ECU. The projected tip places the spark in a favourable position in the chamber for better burn, which can improve throttle response and reduce fouling.
- Stable ignition for easier starts and smoother idle
- Heat range 8 helps manage higher combustion temperatures
- Durable nickel construction for everyday performance
Commonly used in many modern motorcycles, scooters, ATVs, and small engines that specify a 12 mm, 19 mm reach, projected, resistor plug with NGK heat range 8. Use the vehicle lookup to confirm fitment, or check the Vehicle Fitment tab for full details.
Important: Always confirm the correct gap and torque for your engine. Do not overtighten. Fit only where the dimensions and heat range match the manufacturer’s specification.
The price displayed is for a single plug, please add the desired amount to your basket.


