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- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 9 - Jul 14
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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
FEATURES
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 584 reviews
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Product Reviews
★★★★★ 5
The Best Wallet
Color: Boulder Black - Napa Smooth Black
This is the second wallet I have purchased from Bull Guard. The first one is identical and I have used it for approximately one year. The first wallet has held up perfectly. I just decided to buy a second one because I am so happy with the first one and I decided to break up my cards into frequently used in the second, new wallet and less frequently used in the first and older wallet. The capacity of the wallet is excellent. It easily holds all my credit cards, drivers license, bills, insurance ID cards, and my global entry card. The material, workmanship, durability, and quality is also excellent. The wallet is all leather and breaks in perfectly. The size is also perfect fitting perfectly in my rear pocket. For the price, this is the best man's wallet I have ever had and I highly recommend it.
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Reviewed in the United States on November 22, 2025
★★★★★ 5
Solid Wallet
Color: Wild Buffalo Grey
I recently purchased the ULL GUARD Buffalo Leather Wallet, and I’m genuinely impressed with its quality and craftsmanship. The buffalo leather feels durable and premium—this is a wallet that looks like it’ll stand the test of time.
What I love about it:
- Thoughtful Billfold Design: The bill compartment includes a separator, which is perfect for organizing cash and checks separately. It’s a small detail that makes a big difference.
- Plenty of Storage: There are numerous credit card slots, making it easy to keep all your cards neatly arranged and accessible.
- Clear ID Pocket: The transparent ID slot is a convenient touch, especially for quick access to your driver’s license or work badge.
Overall, this wallet combines functionality with rugged style. If you're looking for something that’s both practical and built to last, the ULL GUARD Buffalo Leather Wallet is a solid choice.
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Reviewed in the United States on November 7, 2025
★★★★★ 5
A Quality Wallet
Color: Boulder Black - Napa Smooth Black
So far so good. The wallet has a great feel and is of high quality. It looks great and has plenty of credit card slots and I love the bill holder, with a divider. It is wider than I expected, but it stays thinner than the last minimalist wallet I had so the trade off is worth it to me. I would buy it again.
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Reviewed in the United States on April 28, 2026
★★★★★ 5
Classic tooling.
Color: Adventure Brown - Vintage Buffalo Brown
Excellent. Extremely well made. Full grain bullhide. Pretty tooling.
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Reviewed in the United States on May 14, 2026
★★★★★ 5
Good Wallet, Plenty of Storage Slots
I needed a new wallet to replace my old one that was a tri-fold one that was cloth and it was getting some wear holes in it. I really like this wallet but it has one feature I don't care for. The wallet is good size, has plenty of card holding capacity, RFID blocking, soft leather and it's window is large enough to hold two picture ID's, which I have not to mention the price is pretty good. The only feature I don't care for is the two pocket billfold section. I find it restricts how far it opens up which then makes it hard to see the money you're carrying. I would have been better to not have this so it would open farther and just put two horizontal fabric pockets on the front side of the bill section to hold some business cards.
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Reviewed in the United States on April 8, 2026
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