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  • APR EA888.3/4/EA855.2/EA824 Iridium Pro Spark Plug - Heat Range 9 - 14mm x 26.5mm x 16mm - SINGLE - Z1003100
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APR EA888.3/4/EA855.2/EA824 Iridium Pro Spark Plug - Heat Range 9 - 14mm x 26.5mm x 16mm - SINGLE - Z1003100
APR EA888.3/4/EA855.2/EA824 Iridium Pro Spark Plug - Heat Range 9 - 14mm x 26.5mm x 16mm - SINGLE - Z1003100
APR EA888.3/4/EA855.2/EA824 Iridium Pro Spark Plug - Heat Range 9 - 14mm x 26.5mm x 16mm - SINGLE - Z1003100
APR EA888.3/4/EA855.2/EA824 Iridium Pro Spark Plug - Heat Range 9 - 14mm x 26.5mm x 16mm - SINGLE - Z1003100
APR EA888.3/4/EA855.2/EA824 Iridium Pro Spark Plug - Heat Range 9 - 14mm x 26.5mm x 16mm - SINGLE - Z1003100
APR EA888.3/4/EA855.2/EA824 Iridium Pro Spark Plug - Heat Range 9 - 14mm x 26.5mm x 16mm - SINGLE - Z1003100
APR EA888.3/4/EA855.2/EA824 Iridium Pro Spark Plug - Heat Range 9 - 14mm x 26.5mm x 16mm - SINGLE - Z1003100
APR EA888.3/4/EA855.2/EA824 Iridium Pro Spark Plug - Heat Range 9 - 14mm x 26.5mm x 16mm - SINGLE - Z1003100
APR EA888.3/4/EA855.2/EA824 Iridium Pro Spark Plug - Heat Range 9 - 14mm x 26.5mm x 16mm - SINGLE - Z1003100
APR EA888.3/4/EA855.2/EA824 Iridium Pro Spark Plug - Heat Range 9 - 14mm x 26.5mm x 16mm - SINGLE - Z1003100
APR EA888.3/4/EA855.2/EA824 Iridium Pro Spark Plug - Heat Range 9 - 14mm x 26.5mm x 16mm - SINGLE - Z1003100
APR EA888.3/4/EA855.2/EA824 Iridium Pro Spark Plug - Heat Range 9 - 14mm x 26.5mm x 16mm - SINGLE - Z1003100
APR EA888.3/4/EA855.2/EA824 Iridium Pro Spark Plug - Heat Range 9 - 14mm x 26.5mm x 16mm - SINGLE - Z1003100
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Load image into Gallery viewer, APR EA888.3/4/EA855.2/EA824 Iridium Pro Spark Plug - Heat Range 9 - 14mm x 26.5mm x 16mm - SINGLE - Z1003100
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APR EA888.3/4/EA855.2/EA824 Iridium Pro Spark Plug - Heat Range 9 - 14mm x 26.5mm x 16mm - SINGLE - Z1003100

Ignition Spark Plugs
APR
aprZ1003100
In stock
$31.65 $35.94
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 & ResourcesVideo File...
APR 15-18 Audi Q3 (EA113/EA888 Gen 1/2) Boost Tap - Full Kit - MS100030
APR 15-18 Audi Q3 (EA113/EA888 Gen 1/2) Boost Tap - Full Kit - MS100030
$92.95 $77.20
APR Volkswagen/Audi/Porsche (VR6) 2.8L/3.2L/3.6L 24V Ignition Coil - Red - MS100244
APR Volkswagen/Audi/Porsche (VR6) 2.8L/3.2L/3.6L 24V Ignition Coil - Red - MS100244
$41.57 $34.81
APR EA888.3/4/EA855.2/EA824 Iridium Pro Spark Plug - Heat Range 9 - 14mm x 26.5mm x 16mm - SINGLE - Z1003100
SKU: aprZ1003100
Product Details

Everything You Need To Know

Review product information, shipping and returns, and price-match details before you order.

Product Info

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

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Shipping on new purchases

In Stock Items:
In stock items typically ship within 1-3 business days. Most items arrive within 2 business days, but there are situations where it may take up to 5 business days.

Special Order Items:
Special order and out of stock items are product-specific and lead times can vary. Please e-mail us if you are looking for an ETA / Lead Time on a specific product. Special order orders are subject to cancellation if the vendor cannot provide any ETA.

Returns Policy

To start the return process, please e-mail sales@allianceracing.com

Include the following:
Subject "Return for Order#"
Order Number
Part Number
Reason

Returns are eligible for up to 14 days from delivery of items. Accepted refunds can take up to 7-10 business days to process. All refunds are subject to a 25% restocking fee, if opened. Customer may be responsible for return shipping. If 14 days have gone by since your item was delivered, unfortunately we can’t guarantee you a refund or exchange. We reserve the right to deny any return request, based on provided information.

Alliance Racing is not responsible for ensuring part fitment. It is the responsibility of the purchaser to ensure the parts being ordered are the correct fitment for the vehicle intended. Alliance Racing will not accept any returns for incorrect fitment after product is opened.

To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging.

Shipping

To return your product, mail your product to:
Alliance Racing LLC
8810 Twin Lakes Blvd
Tampa, FL 33614

In many cases, you will be responsible for shipping costs to return your item. Shipping costs are non-refundable. If you receive a refund, the cost of shipping will be deducted from your refund.

Depending on your location, the time it may take for your exchanged product to reach you may vary.

If you are shipping an item over $100, you should consider using a trackable shipping service and/or purchasing Shipping Insurance.

To initiate a price match, please e-mail sales@allianceracing.com with the product information (SKU, URL, & Part Name) and a link to the competitors product page for us to validate the price match eligibility.

Please note that there are cases when we cannot offer a price match, but we will do everything in our power to try to match it. Some manufacturers have Pricing Policies that we have to adhere to.

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