NGK ZFR6F-11G Spark Plug – Stock No. 3869
This NGK ZFR6F-11G is an OE-grade, resistor spark plug designed for clean, reliable ignition. It uses a projected tip and V-grooved nickel centre electrode to help start easily, idle smoothly, and burn fuel efficiently. Heat range 6 offers stable performance on standard and mildly tuned petrol engines that call for this part.
- Strong, consistent spark for smooth running and easier cold starts
- Projected nose helps complete combustion and throttle response
- Resistor design cuts electrical noise that can affect the radio or ECU
Fitment guidance
Commonly specified for many Honda petrol engines and other applications that require NGK ZFR6F-11G. Use the site’s vehicle lookup to confirm fitment, or check the Vehicle Fitment tab for full details.
| Part number | ZFR6F-11G |
|---|---|
| NGK stock number | 3869 |
| GTIN | 087295038697 |
| Category | 686 – Spark Plug |
| Thread diameter | 14 mm |
| Thread reach | 19 mm |
| Hex size | 16 mm |
| Seat type | Flat seat with gasket |
| Heat range | 6 (NGK scale) |
| Gap | 1.1 mm (factory set) |
| Electrode design | Nickel alloy, V-grooved centre, projected tip |
| Resistor | Yes |
| Terminal type | Solid SAE |
| Typical torque | 18-25 Nm for 14 mm gasket seat in aluminium head |
| Service interval guidance | Up to ~30,000 miles under normal use (check manufacturer schedule) |
Tip: Replace as a full set and check coil boots for wear to avoid misfires.
The price displayed is for a single plug, please add the desired amount to your basket.


