APR Iridium Pro Spark Plugs are an excellent upgrade for tuned engines. APR's 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 pre-ignition, 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.
Features:
- 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
Fitment/Applications:
- 2022+ VW Mk8 GTI, Golf R
- 2015-2019 VW Mk7/Mk7.5 Golf, Sportwagen, Alltrack 1.8T
- 2015-2021 VW Mk7/Mk7.5 GTI, Golf R 2.0T
- 2019+ VW GLI
- 2019+ VW Arteon
- 2018+ VW Atlas 2.0T
- 2018+ VW Tiguan (does not fit Tiguan Limited)
- 2014-2023 VW Passat 1.8T, 2.0T
- 2012-2013 Audi 8J TTRS
- 2018+ Audi 8S TTRS
- 2017-2020 Audi 8V RS3
- 2022+ Audi 8Y RS3
- 2017+ Audi B9 A4, A5 2.0T
- 2013-2018 Audi C7 S6, S7, RS7 4.0T
- 2013-2018 Audi D4 A8, A8L, S8
- 2012-2016 Audi D4 A8L W12