Refresh your ignition system in one shot with APR Iridium Pro Spark Plugs and pair with APR Ignition Coils – engineered to work together for a stronger, more consistent spark. Each is a direct-fit upgrade designed to support smoother idle, sharper throttle response, and reliable performance under heat and load—whether you’re stock or running higher boost and power upgrades.
A DIRECT-FIT UPGRADE: Upgrade your OEM spark plug on stock vehicles and on tuned engines with higher boost or upgraded power components, APR spark plugs are engineered to manage increased demands. Direct replacement for stock OEM parts 0PB905612, 0P2905601/A, 06M905606F, 9A790560100, & 9A790560101.
HIGH-TEMP DURABILITY (HEAT RANGE 10): Featuring a copper core construction paired with an iridium electrode, APR’s high heat dispersal “cold plugs” regulate combustion temperatures. This means consistent performance, even under extreme conditions.
BUILT FOR PERFORMANCE: APR Iridium Pro Spark Plugs are made from high-grade materials, engineered to enhance ignition and combustion, and provide smooth, consistent engine power for daily drivers, dedicated racing enthusiasts, and everyone in between.
TRUSTED IN THE U.S. FOR OVER 25 YEARS: Founded in 1997, APR is Headquartered in Opelika, Alabama and has become a global leader in quality and reliable performance aftermarket products for Volkswagen, Audi, Porsche, and other vehicles.
MORE POWER WITH APR: Pair APR spark plugs with APR ignition coils for maximized performance in your Audi EA839, EA825 or Porsche 9A2 engines. Z1004081 works with Ignition Coil Part Numbers MS100208, MS100192, & MS100252.
IRIDIUM BENEFITS: One of the strongest materials used for spark plugs, Iridium is used to withstand high temps, is less corrosive, requires less voltage to product a strong spark, and helps deliver reliable power.
COMPATIBILITY: Compatible Audi A6 A7 A8 Q7 Q8 RS Q8 RS5 RS6 RS7 S4 S5 S6 S7 SQ5 SQ7 & SQ8; Bentley Bentayga & Continental Flying Spur; Lamborghini Urus; Porsche 718, 911, Cayenne, Macan, & Panamera.
Always check sizes, gap, and heat range specs before installing. Installation of the wrong length plug can cause damage to the engine. You must verify this before installing the plug.
152% higher melting point than silver, 125% higher than copper, and 38% higher than platinum.
APR EA825/EA839/9A2 Iridium Pro Spark Plug - Heat Range 10 - 12mm x 26.5mm x 14mm - SINGLE
Heat range 10 spark plug (Similar: Bosch 2, Brisk 8, Denso 31, and NGK 10)
APR Iridium Pro Spark Plugs - Heat Range 10 (EA825, EA839, 9A2 Engines)
1 step colder older than OEM (2.9T/3.0T EA829, 2.0T/2.5T/3.0T/3.7T 9A2)
Optimized electrode design for hard to ignite fuels, such as ethanol
Designed for high performance / tuned vehicle applications
Cooler operating temperature than stock plugs
Includes: One iridium spark plug (Z1004081).
Resists preignition better than stock plugs
An excellent match for APR ignition coils
2 steps colder than OEM (4.0T EA825)
SPARK PLUG 12MM X 265MM X 14MM 10
Stronger than copper and platinum
Perfect for upgraded APR vehicles
Lower required supplied voltage
Non-projected insulator design
Supplied Gap: .55mm +- .05mm
12X26.5X14mm - Heat Range 10
Insulator Material: Ceramic
Thread diameter: 12mm
Install Torque: 17 Nm
Thread reach: 26.5mm
Seat Type: Gasket
Made in the EU
Hexagon: 14mm
Spark Plug
