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Description
APR Iridium Pro Spark Plugs 14x19x16mm Heat Range 9 Single Audi/Volkswagen (2.0 TFSI)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
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
- Made in the EU
Notes:
- 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.
Vehicle Fitment:
PLEASE NOTE - Ensure factory spark plugs are 14x19x16mm
Audi
- Audi A3 8L 2.0 TFSI EA113 (Stock Heat Range #7 - Two Steps Colder)
- Audi A3 8P 2.0 TFSI EA888 Gen1/Gen2 (Stock Heat Range #7 - Two Steps Colder)
- Audi S3 8L 2.0 TFSI EA113 (Stock Heat Range #7 - Two Steps Colder)
- Audi S3 8P 2.0 TFSI EA113 (Stock Heat Range #7 - Two Steps Colder)
- Audi TT 8N 2.0 TFSI EA113 (Stock Heat Range #7 - Two Steps Colder)I
- Audi TT 8J 2.0 TFSI EA888 Gen1/Gen2 (Stock Heat Range #7 - Two Steps Colder)
- Audi TTS 8N 2.0 TFSI EA113 (Stock Heat Range #7 - Two Steps Colder)
- Audi TTS 8J 2.0 TFSI EA113 (Stock Heat Range #7 - Two Steps Colder)
Volkswagen
- Volkswagen Golf GTI Mk5 2.0 TFSI EA113 (Stock Heat Range #7 - Two Steps Colder)
- Volkswagen Golf GTI MK6 2.0 TSI EA888 Gen1/Gen2 (Stock Heat Range #7 - Two Steps Colder)
- Volkswagen Golf GTI Edition 35 Mk6 2.0 TFSI EA113 (Stock Heat Range #7 - Two Steps Colder)
- Volkswagen Golf R Mk6 2.0 TFSI EA113 (Stock Heat Range #7 - Two Steps Colder)
- Volkswagen Tiguan 5N Mk1 2.0 TFSI EA113 (Stock Heat Range #7 - Two Steps Colder)
- Volkswagen Scirocco R Mk3 1S 2.0 TFSI EA113 (Stock Heat Range #7 - Two Steps Colder)
- Volkswagen Jetta Mk5 2.0 TFSI EA113 (Stock Heat Range #7 - Two Steps Colder)
- Volkswagen Jetta Mk6 2.0 TSI EA888 Gen1/Gen2 (Stock Heat Range #7 - Two Steps Colder)
- Volkswagen Passat B6 2.0 TFSI EA113 (Stock Heat Range #7 - Two Steps Colder)
- Volkswagen Passat B7 2.0 TSI EA888 Gen1/Gen2 (Stock Heat Range #7 - Two Steps Colder)
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
4.2 ★★★★★
Based on 5 reviews
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Product Reviews
★★★★★ 2
Stops working after it heats up
Style: Receiver
This unit can’t stay running for any period longer than 5 hours. The components start to heat up and the sound goes out completely. The audio will only return after the unit has been turned off and cooled. A complete waste of money.
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Reviewed in the United States on October 5, 2025
★★★★★ 5
Most dynamic and engaging sound
1/15/24: I should mention that I connected my old Yamaha rx 1070 and no HDMI or HDCP issues.
The A8A started giving HDCP 2.2 errors. No video on TV. Have to restart receiver to get compatibility. This happened after a recent firmware update. Very unfortunate since it's an awesome receiver.
Update 12/27: so I've had this receiver for just over a month and I can say with confidence that I'm thoroughly enjoying it. I have disconnected to Arundel 1723 speakers and the sound is just outstanding. I leave the surround AI on all the time and I've compared the sound with it on and off and the difference is perceptible. The surround AI makes dialogue more intelligible and creates a wide sound field. The best part again are the scenes which you can configure to your heart's content. I will point to the fact that initially I did the YPAO angle measurement incorrectly.
There are two parts to the stand the tripod(propeller type)and a stand that fits onto it. The fourth position is high up on the stand after it is fixed to the propeller stand. Use a tripod stand to achieve great results. If you have Dolby Atmos and/ or front presence and rear presence speakers turn off the speaker virtualization and this will give you better sound. Also when doing the calibration choose your measurement points at least two to three feet apart.
To give you some context I have tested the Onkyo RZ70, Sony 7000ES ,marantz Cinema 50 and Denon X4800.
The Yamaha a8a outshines all these receivers. It is a blast to watch movies. The sound is very punchy especially in the mid bass and the lower bass is literally room shaking.
The surround AI feature is awesome and I would advise that you use it. I was initially skeptic about this but it creates a sense of immersion as if you are right in the movie. The dialogue is crystal clear and very easily intelligible. I would strongly recommend using AI or at least giving it a try.
The remote is backlit which is great. One of the most powerful features of this receiver is scenes. With this, you can assign various functions to one button on the remote.
The only downside I see is the on-screen display which takes up the whole screen. It should be a banner at the bottom. The other issue I have is in the music cost app where on the input screen the whole real estate is taken up by a symbol that you can choose. I would have preferred instead some more useful information like the number of speakers being used. This is one of the best receivers I've ever heard. You will not be disappointed if you buy this.
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Reviewed in the United States on November 19, 2023
★★★★★ 5
Premium sound quality
Wao. This is amazing
I am extremely satisfied with the Yamaha A8A. It delivers excellent sound quality and offers a premium Hi-Fi listening experience. I previously used a Denon 13.2 receiver, and the Yamaha not only measures up but surpasses it in many ways. The sound is outstanding, and I am very impressed with its performance. Overall, I highly recommend the Yamaha A8A for anyone seeking a high-quality audio receiver.
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Reviewed in the United States on October 25, 2025
★★★★★ 5
Quality and reliability included
Powerful upgrade to my modest home theater
I had an a4a and wanted to upgrade to 5.2.4
Having the ability to adjust subs independently is the biggest difference I noticed immediately and made a huge impact in balancing my sound
Paired with a emotiva basx A3 to take the pressure of my front stage I couldn’t be happier with how dynamic this setup is
I tried a Denon 6700 and didn’t like it. The Yamaha has a backlit remote that lights up just by picking it up and pass through works great so with the unit off I can use anything attached to it with headphones or tv speakers without having to wake the family
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Reviewed in the United States on April 9, 2026
★★★★★ 1
Unreliable and may have NO WARRANTY
Unit has failed. It won't power up. Blinking red light. Called Yamaha and they are verifying the 3prd party through Amazon is a authorized dealer prior to authorizing repair. Less than 2 years old. Home page on Amazon sales screen advertises it comes with a 5 year warranty with registration. How would I know if or if not Amazons vender is a authorized dealer? I'm going to be you know what if they come back and say NO WARRANTY. I will update as the process moves along.
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Reviewed in the United States on October 27, 2025
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