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Description
Fits Various vehicles Iridium Pro Spark Plugs-14x19x16mm-Heat Range 9 - Z1003101APR 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
- 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: 19mm
- Thread diameter: 14mm
- Hexagon: 16mm
- Seat Type: Gasket
- Install Torque: 25 Nm
- Made in the EU
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4.3 ★★★★★
Based on 27 reviews
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Product Reviews
★★★★★ 5
Easy and Short Read
This book is well written and easy to understand. The content is relevant to everyone who is open minded. Worth reading.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 30, 2026
★★★★★ 5
This message is so important!
Format: Paperback
Highly recommend! Forgiveness is so important.
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Reviewed in the United States on May 30, 2026
★★★★★ 5
Basic, Profound, and Thorough
Format: Paperback
I'm a deliverance minister and walk people through forgiveness exercises on a regular basis because of the spiritual freedom that comes with forgiveness. This book is basic but very thorough and covers all the high-level points on the importance of forgiveness without getting into the weeds. Book is thin; not overwhelming to non-readers.
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Reviewed in the United States on August 3, 2025
★★★★★ 5
Excellent book!
This is the best book on forgiveness that I’ve ever read. Only read this if you are serious about working through unforgiveness and bitterness. I learned that it is okay to have boundaries and limitations, but first you must forgive.
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Reviewed in the United States on October 15, 2025
★★★★★ 5
Buy more than one! Shareable!
Format: Paperback
This is a small book and a quick read, but don’t let that fool you. It’s packed with truths that will encourage the reader to forgive those that have wronged them. This book was required reading for a class I took. After reading it, I decided to buy several copies to give to friends.
What you’ll learn: When someone offends us we often feel we have a right to an apology, and perhaps we do. We might even want revenge. But what we don’t realize is that unforgiveness only hurts the one offended. It’s like filling a cup with poison for your offender and then drinking it yourself. You become poisoned by your own hurt, anger, thoughts or words against that person. When we refuse to forgive, we become enslaved to bitterness, and bitterness can take root in our mind, spirit, and body. We become sick.
When we forgive, we release the offender from blame, or forgive their debt to us. We leave the situation (or revenge) in God’s hands, and we move on. The result is freedom!
“For if you forgive other people when they sin against you, your Heavenly Father will also forgive you.” Matthew 6:14
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Reviewed in the United States on August 18, 2021