WARNING: This product can expose you to chemicals that are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information, visit www.P65warnings.ca.gov.The APR Iridium Pro Spark Plugs (Z1003101) are a high-performance ignition solution specifically designed for tuned and high-output Audi, VW, and Porsche engines. As horsepower and boost levels increase, factory spark plugs often struggle with excessive heat, leading to pre-ignition or spark blowout. APR’s Iridium Pro series addresses this by using Iridium—one of the hardest materials on earth—featuring a melting point 152% higher than silver and 38% higher than platinum.
This specific plug features a 19mm thread reach and a projected insulator design, making it suitable for specific engine configurations that require the spark to be positioned further into the combustion chamber. With a Heat Range 9 (colder than stock), these plugs effectively dissipate heat through a copper core, ensuring stable ignition even under high cylinder pressures or when using high-ethanol fuels like E85. They are an ideal match for vehicles equipped with APR Ignition Coils.
Features:
- Exceptional Durability: Iridium electrode is significantly stronger than copper or platinum, offering superior resistance to melting and cracking.
- Cold Heat Range (9): Optimized for high-output engines to run cooler than factory plugs, preventing power-robbing pre-ignition.
- Projected Insulator: Designed for specific engine architectures to optimize flame front propagation in the combustion chamber.
- Efficient Energy Transfer: Requires lower supplied voltage to create a consistent, powerful spark, reducing the workload on your ignition coils.
- Ethanol Optimized: Designed to provide reliable ignition for hard-to-ignite fuels such as E85 and high-octane racing fuels.
- Thermal Efficiency: Integrated copper core rapidly dissipates heat from the tip to the cooling system.
Technical Specifications:
| Specification | Details |
|---|---|
| Heat Range | 9 (Comparable to NGK 9 / Denso 27) |
| Thread Reach | 19.0mm |
| Thread Diameter | 14.0mm |
| Hex Size | 16.0mm |
| Seat Type / Torque | Gasket / 25 Nm |
Cross-Reference Heat Ranges:
- NGK: 9
- Denso: 27
- Bosch: 3
- Brisk: 10
Critical Tech Note: This plug features a 19mm reach. It is vital to verify the thread length required for your specific engine. Installing a plug that is too long or too short can lead to catastrophic engine failure.
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