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Stop Misfires Before They Start With a Laser Welded Iridium Tip
The NGK Laser Iridium spark plug pairs a fine wire iridium center electrode with a platinum tipped ground strap to deliver a stronger, more consistent spark than standard nickel plugs. Built to OE specifications for VW, Audi, and Porsche V6 engines, this box of 4 restores smooth idle, crisp throttle response, and reliable cold starts while extending service life well beyond conventional plugs.
Key Features
- Laser welded fine wire iridium center electrode for a stronger, more focused spark
- Platinum pad on the ground electrode resists erosion for long service life
- 98 percent pure copper core improves heat dissipation and prevents overheating
- Trivalent metal plating protects threads from corrosion and seizing
- Factory pre-gapped to 0.9mm for OE-spec installation
- Heat range 7, M12 x 1.25 thread, 26.5mm reach
- Built in resistor reduces electrical noise that can interfere with the ECU
Specifications
| Detail | Value |
|---|---|
| Brand | NGK |
| Part Number | ILZKR7A |
| NGK Stock Number | 1961 |
| Type | Laser Iridium, resistor |
| Center Electrode | Iridium, fine wire |
| Ground Electrode | Platinum tipped |
| Heat Range | 7 |
| Thread Size | M12 x 1.25 |
| Thread Reach | 26.5mm |
| Hex Size | 16mm (5/8 in) |
| Factory Gap | 0.9mm |
| Quantity | Box of 4 |
| UPC | 087295119617 |
What's Included
- 4 x NGK Laser Iridium spark plugs
- Crush washers pre-installed on each plug
About NGK
NGK Spark Plugs has manufactured ignition components in Japan since 1936 and remains the original equipment supplier for many of the world's largest automakers. Its Laser Iridium line applies OE-grade materials science to the aftermarket, giving daily drivers and enthusiasts factory-level ignition performance and longevity.
FAQ
What is the ILZKR7A?
The ILZKR7A is an NGK Laser Iridium spark plug with a fine wire iridium center electrode and platinum tipped ground strap, factory installed on VW, Audi, and Porsche 3.6L V6 engines and sold aftermarket as a direct OE replacement.
What vehicles use this spark plug?
It is the factory spec plug for the Volkswagen Passat, CC, Touareg, and Atlas, the Audi Q7, the Porsche Cayenne, and the Bugatti Veyron 16.4, all equipped with the 3.6L V6 FSI engine family.
Is it pre-gapped from the factory?
Yes, it ships pre-gapped to 0.9mm, which matches factory specification for the applications above. Always confirm gap against your vehicle's service manual before installation.
How long do NGK Laser Iridium spark plugs last?
Laser Iridium plugs are rated for up to 100,000 miles of service under normal driving conditions, well beyond the typical lifespan of copper or standard platinum plugs.
What is the difference between Laser Iridium and Laser Platinum plugs?
Laser Iridium plugs use an iridium center electrode, which is significantly harder and more erosion resistant than the platinum center electrode used in Laser Platinum plugs, giving iridium plugs a longer service interval.
Can I use anti-seize compound when installing these spark plugs?
No, the trivalent metal plating on NGK spark plugs is designed to prevent seizing without anti-seize compound. Adding anti-seize can cause overtightening and thread damage.
What torque should I use when installing this spark plug?
NGK recommends 10.8 to 14.5 lb-ft for aluminum cylinder heads. Always torque to your vehicle manufacturer's specification when available.
Does this spark plug require a resistor-compatible ignition system?
Yes, this plug has a built in 1k ohm resistor that suppresses electrical noise and is compatible with modern electronic ignition and engine management systems.
Install Instructions
- Allow the engine to cool completely before beginning installation
- Remove the ignition coil or coil pack covering each spark plug well
- Use a spark plug socket to remove the old spark plug, turning counterclockwise
- Inspect the new plug and confirm the gap measures 0.9mm before installing
- Thread the new plug in by hand to avoid cross threading, then torque to 10.8 to 14.5 lb-ft
- Reinstall the ignition coil or coil pack and reconnect all electrical connectors
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