Description
NGK ZFR6K-11 Spark Plug – Stock No. 6711
This NGK ZFR6K-11 is a reliable, OEM-grade spark plug for everyday driving and light performance use. It uses a copper core with a nickel alloy tip for steady spark and good heat control. The projected tip and factory 1.1 mm gap help cold starts, idle quality, and throttle response.
It includes a built-in resistor to reduce electrical noise, protecting audio and ECU signals. Heat range 6 suits many standard petrol engines that need a medium heat rating.
Often specified for various Honda petrol engines from the 1990s-2000s. Please use the vehicle lookup on our site or check the Vehicle Fitment tab to confirm.
- Consistent ignition with a stable 1.1 mm preset gap
- Copper core for better heat transfer and knock resistance
- Resistor design cuts radio interference
Technical specifications
| Part number | ZFR6K-11 |
| NGK stock number | 6711 |
| GTIN | 087295167113 |
| Category | 686 – Spark Plug |
| Thread diameter | 14 mm |
| Thread pitch | 1.25 |
| Reach (thread length) | 19 mm |
| Hex size | 16 mm (5/8 in) |
| Seat type | Gasket |
| Heat range | 6 (NGK scale) |
| Resistor | Yes |
| Electrode material | Nickel alloy with copper core |
| Tip style | Projected insulator |
| Ground electrode | Taper cut |
| Preset gap | 1.1 mm |
| Terminal type | Solid SAE |
| Typical tightening torque | 25-30 Nm (14 mm gasket seat) |
Install on a cold engine. Check and adjust the gap only if required by your ECU tune or manufacturer spec. Use a torque wrench for best results.
The price displayed is for a single plug, please add the desired amount to your basket.
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