Sale

Ignitions and Electrical› Ignition Components

APR Tuning

SPARK PLUG, 12MM X 26.5MM X 14MM -10

$28.77 $24.26 Save $4.51

SKU: A0CU Z1004081

In Stock
In Stock
Ships by Oct 7
Free Shipping over $200
$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Overview

Made from iridium, these spark plugs offer a cooler operating temperature than stock plugs, resist preignition, and last longer. Their optimized electrode design is effective for hard-to-ignite fuels like ethanol.

Key specifications include a 12x26.5x14mm size, Heat Range 10, 26.5mm thread reach, 12mm thread diameter, and a 14mm hexagon. They feature a gasket seat type, a 17 Nm install torque, and a ceramic insulator material. The supplied gap is .55mm ± .05mm.
Show original supplier description

Part #: Z1004081

APR Iridium Pro Spark Plugs are the excellent upgrade for tuned engines. Our spark plugs are made from Iridium, which is one of the strongest materials you can use in this type of application. They run cooler, resist preignition, last longer than other materials with higher melting points, and even require less voltage to produce a strong spark. The electrode is harder and stronger than other materials and with its copper core can dissipate heat more easily, is better protected from melting, cracking, and other limitations found with standard plugs. These plugs were designed for use on tuned and higher output vehicles that benefit from a plug cooler than the factory heat range. They are great for high boost, high cylinder pressure, high cylinder temperatures, and high power situations, and they pair nicely with a set of APR ignition coils, where applicable.

Features:

  • Heat range 10 spark plug (Similar: Bosch 2, Brisk 8, Denso 31, and NGK 10)
  • 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
  • An excellent match for APR ignition coils
  • Thread reach: 26.5mm
  • Thread diameter: 12mm
  • Hexagon: 14mm
  • Seat Type: Gasket
  • Install Torque: 17 Nm
  • Insulator Material: Ceramic
  • Supplied Gap: .55mm +- .05mm
  • 2 steps colder than OEM (4.0T EA825)
  • 1 step colder older than OEM (2.9T/3.0T EA829, 2.0T/2.5T/3.0T/3.7T 9A2)
  • Made in the EU

Fits 2.9T/3.0T EA839, 4.0T EA825, 2.0/2.5/3.0/3.7T 9A2 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

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandAPR Tuning
Part NumberA0CU Z1004081

Videos

About MOTORMIA

5,000+ Trusted brands
1M+ Enthusiasts
5M+ Parts sold

Buy with Confidence

Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

View Full Return Policy

Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

View Full Shipping Policy