Description
NGK ZFR4F-11 Spark Plug – Stock No. 4043
This NGK ZFR4F-11 is a reliable, OE-style spark plug for everyday performance and smooth running. It uses a nickel alloy centre electrode with a projected tip and a built-in resistor to reduce electrical noise. The factory 1.1 mm gap supports clean ignition and stable idle.
Choose this plug for stock or lightly modified engines that specify an NGK heat range 4. It is a slightly hotter grade than a 5, helping with cold starts and low speed driving in standard tune.
- Consistent ignition for smooth starts and idle
- Resistor design to minimise radio interference
- Projected tip for efficient flame kernel and response
Technical Specifications
| Part Number | ZFR4F-11 |
| NGK Stock Number | 4043 |
| Category | 686 – Spark Plug |
| GTIN | 087295140437 |
| Thread diameter | 14 mm |
| Thread pitch | 1.25 mm |
| Reach (thread length) | 19 mm |
| Seat type | Gasket |
| Hex size | 16 mm (5/8 in) |
| Heat range | 4 (NGK scale – hotter than 5) |
| Resistor | Yes |
| Tip configuration | Projected |
| Centre electrode | Nickel alloy |
| Ground electrode | Standard single |
| Factory gap | 1.1 mm |
| Terminal type | Solid SAE |
Fitment Guidance
Commonly specified for many Honda petrol engines from the 1990s to early 2000s. Always use our vehicle lookup to confirm fitment or check the Vehicle Fitment tab for full details.
Note: Stick to the specified heat range and gap unless your ECU calibration or engine build requires a change. Tighten to the correct torque to avoid thread damage.
The price displayed is for a single plug, please add the desired amount to your basket.
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