APR
APR EA888.3/4/EA855.2/EA824 Iridium Pro Spark Plug - Heat Range 9 - 14mm x 26.5mm x 16mm - SINGLE - Z1003100
- Catalog SKU
- aprZ1003100
- Manufacturer part #
- Z1003100
- ✓Secure checkout
- ✓Enthusiast support
- ✓Free shipping on eligible $300+ merchandise subtotals in the lower 48 states
- Returns policy
Some products and vendors are excluded, including freight/LTL and oversized items.
One Parts Desk request covers fitment, availability, and timing.
Price matches are reviewed before purchase and are not guaranteed.
Project Garage
Plan this exact partSave the selected option to a build plan in this browser. No account required.
Fitment is not verified for your saved vehicle.
Product details
Product information
Overview
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.
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.
Features & Benefits
- 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
Downloads & Resources
Application & fitment
Fitment has not been independently verified for your vehicle. Confirm the manufacturer application against your year, make, model, trim, and modifications before ordering.
Shipping & availability
Processing and carrier timing vary by stock status and destination. Final shipping services and costs are confirmed at checkout.
Keep comparing