NGK LZKR6B-10E Spark Plug (Stock No. 1578)
The NGK LZKR6B-10E is a high-quality resistor spark plug built for reliable ignition and steady performance. It uses NGK’s proven copper core and nickel alloy tip to manage heat well and resist fouling. The preset 1.0 mm gap supports clean firing and smooth running in standard and lightly tuned engines.
It helps the engine start easily, idle cleanly, and burn fuel efficiently. Expect consistent spark under everyday driving, with stable performance under load. If your car is modified or runs higher boost, you may need a different heat range.
- Reliable ignition with a stable 1.0 mm factory gap
- Resistor design reduces electrical noise that can affect sensors and the radio
- Copper core for better heat dissipation and resistance to knock
- Durable nickel alloy electrode for long, dependable service
Always confirm fitment and heat range for your engine. For exact applications, use our vehicle lookup or see the Vehicle Fitment tab.
| Part Number | LZKR6B-10E |
| NGK Stock Number | 1578 |
| GTIN | 087295115787 |
| Category | 686 – Spark Plug |
| Type | Resistor spark plug |
| Heat Range | 6 (NGK scale – medium) |
| Factory Gap | 1.0 mm |
| Centre Electrode | Copper core with nickel alloy tip |
| Ground Electrode | Nickel alloy |
Installation notes
– Fit to a clean, cold engine.
– Check the gap only if the vehicle manufacturer specifies it.
– Tighten to the torque specified by your vehicle manufacturer. Over-tightening can damage the plug or cylinder head.
The price displayed is for a single plug, please add the desired amount to your basket.


