APR Iridium Pro Spark Plugs are the excellent upgrade for tuned engines. Our spark plugs are made from Iridium, which is one of the strongest materials you can use in this type of application. They run cooler, resist preignition, last longer than other materials with higher melting points, and even require less voltage to produce a strong spark. The electrode is harder and stronger than other materials, can dissipate heat more easily, is better protected from melting, cracking, and other limitations found with standard plugs. These plugs were designed for use on tuned and higher output vehicles that benefit from a plug cooler than the factory heat range. They are great for high boost, high cylinder pressure, high cylinder temperatures, and high power situations, and they pair nicely with a set of APR ignition coils, where applicable.
Heat range 9 spark plug (Similar: Bosch 3, Brisk 10, Denso 27, and NGK 9)
152% higher melting point than silver, 125% higher than copper, and 38% higher than platinum.
Stronger than copper and platinum
Designed for high performance / tuned vehicle applications
Non-projected insulator design
Lower required supplied voltage
Cooler operating temperature than stock plugs
Optimized electrode design for hard to ignite fuels, such as ethanol
Resists preignition better than stock plugs
Perfect for upgraded APR vehicles
An excellent match for APR ignition coils
Thread reach: 26.5mm
Thread diameter: 14mm
Hexagon: 16mm
Seat Type: Gasket
Install Torque: 25 Nm
Made in the EU
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Brand
APR
Emission Code
2
6
Product Type
Spark Plug
UPC
810009935001
Part Number
Z1003100
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This part is legal for sale and use on Emissions Controlled Vehicles when used in accordance with the manufacturers application guide because it is a direct or consolidated replacement part.
The following vehicles are considered Emissions Controlled Vehicles:
1966 and newer U.S. manufactured California Certified vehicles
1968 and newer U.S. manufactured Federally Certified vehicles
1968 and newer Foreign manufactured vehicle
