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- USA
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Ships within 48 hours · Estimated delivery Jul 6 - Jul 11
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Description
APR Iridium Pro Spark Plugs (Heat Range 9 ) - 14x26.5x16mmAPR 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, can dissipate heat more easily, is better
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, 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 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
- An excellent match for APR ignition coils
- Thread reach: 26.5mm
- Thread diameter: 14mm
- Hexagon: 16mm
- Seat Type: Gasket
- Install Torque: 25 Nm
- Made in the EU
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.7 ★★★★★
Based on 1674 reviews
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Product Reviews
★★★★★ 5
Great shoes
Size: 10.5, Color: White
These are a great pair of sneakers that work both as casual sneakers and for dressier occasions. They are incredibly comfortable too.
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Reviewed in the United States on November 22, 2025
★★★★★ 4
Great !
Size: 10.5, Color: Black
Orginal and comfortable shoes.
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Reviewed in the United States on October 22, 2025
★★★★★ 5
La mejor compra
Size: 9.5, Color: Black, Size: 9.5, Color: Black
El final. La
Piel igual que en la foto súper suave y para nada sintéticas. Súper cómodos y ajustan al tamaño pedido al 100%
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Reviewed in the United States on November 1, 2025
★★★★★ 2
Runs much bigger than expected
Size: 8.5, Color: White
Nice design and looks good, but sizing is completely off. Ordered 8.5 (usual size) and it fits much larger, closer to a 9.5. Already did two exchanges and both had the same issue. Not reliable sizing.
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Reviewed in the United States on March 19, 2026
★★★★★ 5
Great shoe!
Size: 8.5, Color: White
Love these! They are exactly what I wanted! They fit a little bigger than I expected, but other than that they are perfect and very comfortable!
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Reviewed in the United States on July 18, 2025