NGK DFH6B-11A Spark Plug (Stock No. 6858)
The NGK DFH6B-11A is a quality replacement spark plug for consistent ignition and everyday performance. It helps the engine start cleanly, idle smoothly, and run efficiently. Use it to restore lost performance and maintain reliable combustion under normal driving and light performance use.
- Stable spark for clean starts and smooth idle
- Built to NGK quality standards for durability
- Correct heat range for balanced performance and longevity
Technical specifications
| Part number | DFH6B-11A |
| NGK stock number | 6858 |
| Category | 686 – Spark Plug |
| GTIN | 087295168585 |
| Heat range (NGK) | 6 |
| Factory gap | 1.1 mm |
| Seat type | Gasket (check vehicle spec) |
| Design | Copper core, nickel-alloy centre and ground electrodes |
| Resistor | Yes |
| Packaging | Single plug |
Fitment guidance
This plug references NGK heat range 6 with a 1.1 mm preset gap. Vehicle fitment varies by engine. Use our vehicle lookup to confirm, or check the Vehicle Fitment tab for full details.
Installation notes
– Always confirm thread size, reach and seat type for your engine before fitting.
– Check and adjust the gap only if your vehicle’s service data calls for it.
– Torque to the manufacturer’s spec.
– Do not use anti-seize unless specified by the vehicle maker.
The price displayed is for a single plug, please add the desired amount to your basket.


