APR EA888.3/4/EA855.2/EA824 Iridium Pro Spark Plug - Heat Range 9 - 14mm x 26.5mm x 16mm - SINGLE (aprZ1003100)

This is the APR EA888.3/4/EA855.2/EA824 Iridium Pro Spark Plug - Heat Range 9 - 14mm x 26.5mm x 16mm - SINGLE. Part aprZ1003100. Ignition parts (coils, plugs and wires) deliver a strong, consistent spark.

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.

Features and benefits

• 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

Product details

• Part type: Ignition
• Brand: APR
• Center Electrode Tip Material: Iridium
• Grade Type: Performance
• Indexed: No
• Insulator Material: Ceramic
• APR part number: aprZ1003100

Fitment

• Vehicle: Audi RS3, Audi RS6 / RS7, Audi S3, Audi S6 / S7, Audi TT RS, Volkswagen Golf R
• Years and trims on file: 2017-2020 Audi RS3 Base; 2022-2026 Audi RS3 Base; 2014-2018 Audi RS7 Base; 2016-2018 Audi RS7 Performance; 2026 Audi S3 Base; 2020 Audi S3 Premium; 2022-2026 Audi S3 Premium; 2015-2020 Audi S3 Premium Plus; 2022-2026 Audi S3 Premium Plus; 2015-2019 Audi S3 Prestige; 2022-2026 Audi S3 Prestige; 2013-2015 Audi S6 Base; plus 11 more on file
• Application listing: APR EA888.3/4/EA855.2/EA824 Iridium Pro Spark Plug - Heat Range 9 - 14mm x 26.5mm x 16mm - SINGLE
• Check the vehicle, model years, engine and trim above against your car before ordering. Not sure? Ask us and we will check it against your VIN.

Shipping & returns

• Orders are processed within 1–3 business days; standard delivery is 3–7 business days within the United States.
• APR parts are supplied through our distributor. We confirm availability and lead time with you after you order.
• We currently ship within the U.S. only. See our Shipping Policy.
• 30-day returns on unused parts in original packaging — see our Return Policy.

Installation at Team ANBD

Team ANBD is a performance shop in Andover, New Jersey. We can align or corner-balance the car, and prep track cars. Book an appointment or ask us about installation and fitment before you order.