NGK LZKAR6AP-11 Spark Plug (Stock No. 6643)
This NGK spark plug delivers a strong, consistent spark for smooth running and reliable starts. It uses a fine platinum centre electrode to improve ignition while keeping wear low. That means clean combustion, stable idle, and dependable performance over a long service life.
The 1.1 mm factory-set gap suits many modern petrol engines that specify a wider gap for efficient burn. It is a resistor type to reduce electrical noise that can affect sensitive electronics such as the ECU.
Use this plug as a quality replacement when refreshing ignition components or when chasing misfires, rough idle, or poor fuel economy caused by worn plugs. Always replace as a full set.
- Fine-wire platinum centre for clean, efficient ignition
- Resistor design to minimise electrical interference
- Factory-set 1.1 mm gap for stable spark
- Long service life with consistent performance
- OE-level quality and reliability
| Part number | LZKAR6AP-11 |
| NGK stock number | 6643 |
| GTIN | 087295166437 |
| Category | 686 – Spark Plug |
| Heat range (NGK) | 6 |
| Resistor | Yes |
| Electrode technology | Platinum fine-wire centre, platinum pad ground |
| Factory gap | 1.1 mm |
Important: Confirm fitment with the vehicle lookup or the Vehicle Fitment tab. Always install to the torque and gap specification in your vehicle’s service manual. Do not force-adjust the gap on fine-wire plugs.
The price displayed is for a single plug, please add the desired amount to your basket.


