APR EA888.3/4/EA855.2/EA824 Iridium Pro Spark Plug - Heat Range 9 - 14mm x 26.5mm x 16mm - SINGLE
$60.99
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.
14X26.5X16MM - Heat Range 9
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.
- Heat range 9 spark plug (Similar: Bosch 3, Brisk 10, Denso 27, and NGK 9)
- Optimized electrode design for hard to ignite fuels, such as ethanol
- Designed for high performance / tuned vehicle applications
- Cooler operating temperature than stock plugs
- Resists preignition better than stock plugs
- An excellent match for APR ignition coils
- Stronger than copper and platinum
- Perfect for upgraded APR vehicles
- Lower required supplied voltage
- Non-projected insulator design
- Thread diameter: 14mm
- Install Torque: 25 Nm
- Thread reach: 26.5mm
- Seat Type: Gasket
- Made in the EU
- Hexagon: 16mm
Upgrade your vehicle's ignition system with the APR Iridium Pro Spark Plug, part number APRZ1003100. Designed for high-performance and tuned applications, this spark plug features an iridium center electrode that offers 152% higher melting point than silver and superior durability compared to copper and platinum. Its heat range 9 specification ensures optimal combustion, even under elevated boost or load conditions, providing smoother idle, sharper throttle response, and more reliable performance. The non-projected insulator design and gasket seat ensure a proper fit and seal, making it an excellent match for APR ignition coils and other performance upgrades. This spark plug is engineered to resist preignition and operate at cooler temperatures than stock plugs, contributing to greater engine longevity and efficiency. Whether installed in stock vehicles or those with higher boost levels, the APR Iridium Pro Spark Plug delivers consistent, high-quality ignition performance. Manufactured in the EU, it adheres to strict quality standards and is built for durability and dependable operation in demanding driving scenarios. The 14mm thread diameter, 26.5mm reach, and 16mm hexagon size make installation straightforward, with a recommended torque of 25 Nm. This spark plug is suitable for a wide range of vehicles, especially those requiring high-performance ignition components, and pairs seamlessly with APR’s line of ignition coils for an integrated upgrade. Ensure to verify size, gap, and heat range specifications before installation to avoid engine damage and ensure optimal performance.
Features:
- Iridium center electrode with 152% higher melting point than silver for improved durability
- Heat range 9 design optimized for high-performance and tuned vehicles
- Engineered for reliable operation under heat and load, resisting preignition
- Cooler operating temperature than stock plugs for enhanced engine longevity
- Designed for easy installation with a 14mm thread diameter, 26.5mm reach, and 16mm hexagon
- Perfect match for APR ignition coils and high-boost applications
- Gasket seat for a secure fit and proper sealing
- Made in the EU with strict quality standards
- Suitable for vehicles requiring upgraded ignition components
- Low required voltage for improved ignition efficiency