Long Lasting Spark Quality for High Performance Builds
This Laser Iridium plug uses a fine wire center electrode and a taper cut ground electrode to improve flame kernel growth and reduce quenching. The laser welded iridium tip resists erosion under sustained high heat, helping maintain a consistent gap over a long service life.
Key Features
- Laser welded fine wire iridium center electrode for a strong, focused spark
- Taper cut ground electrode reduces quenching and improves flame kernel growth
- Trivalent metal plating on the shell resists corrosion and seizing
- Resistor design suppresses radio and electronic interference
- Engineered for demanding heat range 7 applications
Specifications
| Detail | Value |
|---|---|
| Gap | 1.1mm |
| Heat Range | 7 |
| Thread Size | M12 x 1.25 |
| Reach | 26.5mm |
| Hex Size | 14mm |
| Resistor | Yes |
What’s Included
- 4 NGK ILZKAR7E11S Laser Iridium spark plugs
About NGK
NGK is a global leader in ignition technology, and its Laser Iridium line uses a laser welding process to fuse iridium wire to the electrode tip for exceptional durability under high combustion temperatures.
Related Parts
- NGK Iridium Long Life Spark Plug Box of 4 (ILKR8E6)
- NGK Iridium Stock Heat Spark Plug Box of 4 (LZTR5AIX-13)
- NGK Iridium Spark Plug Box of 4 (LFR7AIX)
FAQ
What is the NGK ILZKAR7E11S?
The NGK ILZKAR7E11S is a Laser Iridium spark plug with a heat range of 7, a 1.1mm gap, and an M12 x 1.25 thread. It uses a laser welded fine wire iridium center electrode built for long term durability.
What gap does this spark plug use?
This plug uses a 1.1mm gap, common for direct injection and turbocharged performance applications.
What thread size and reach does this plug use?
It uses an M12 x 1.25 thread with a 26.5mm reach and 14mm hex size.
Why choose a Laser Iridium plug over a standard nickel plug?
The laser welded iridium tip resists electrode erosion far better than nickel alloy, helping the plug maintain its factory gap and spark quality over a longer service interval.
Does this spark plug include a resistor?
Yes, this plug includes an internal resistor to help suppress radio and electronic interference.
How many plugs come in this box?
This listing includes a box of 4 spark plugs.
Is this plug suited for turbocharged or direct injection engines?
Its heat range 7 rating and 1.1mm gap make it a common fit for modern turbocharged and direct injection engines, though you should confirm your engine manufacturer specification before installing.
Install Instructions
- Allow the engine to cool completely before starting work
- Remove the ignition coil, coil pack, or spark plug wire
- Use a spark plug socket to remove the old plug, turning counterclockwise
- Verify the gap on the new plug matches manufacturer specification
- Thread the new plug in by hand until seated, then torque to specification
- Reconnect the coil, coil pack, or wire before starting the engine
