NGK ZFR6T-11G Spark Plug (Stock No. 5960)
The NGK ZFR6T-11G is a reliable, resistor-type spark plug for petrol engines. It delivers a clean, consistent spark to aid cold starts, smooth idle, and steady performance. The preset 1.1 mm gap and projected tip help ignite the mixture efficiently, supporting good fuel burn and stable power.
A robust nickel-alloy centre electrode with NGK’s V-groove design focuses the spark, improving ignition under load. The heat range 6 rating suits many everyday and lightly tuned engines that run on standard unleaded.
Always confirm fitment and specifications for your engine using the site’s vehicle lookup or the Vehicle Fitment tab.
| Part Category | 686 – Spark Plug |
| Part Number | ZFR6T-11G |
| NGK Stock Number | 5960 |
| GTIN | 087295159606 |
| Thread Diameter | 14 mm |
| Thread Pitch | 1.25 mm |
| Reach (thread length) | 19 mm |
| Hex Size | 16 mm (5/8 in) |
| Seat Type | Gasket |
| Resistor | Yes |
| Heat Range | 6 (NGK scale) |
| Factory Gap | 1.1 mm (-11) |
| Tip Projection | Projected insulator |
| Centre Electrode | Nickel alloy, V-groove |
| Ground Electrode | Standard, single |
| Terminal Type | Solid terminal |
Why choose this plug
- Consistent spark for smoother idle and throttle response.
- Projected tip and 1.1 mm gap aid reliable cold starts.
- Resistor design helps reduce electrical noise that can affect sensors and audio.
Use the site’s vehicle lookup to confirm it suits your engine and heat range needs. If you are running higher boost or heavy track use, you may need a different heat range or gap.
The price displayed is for a single plug, please add the desired amount to your basket.


