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Ships within 48 hours · Estimated delivery Jul 26 - Jul 31
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Description
NGK Iridium IX Spark Plug Box of 4 (ZFR6AIX-11S)The NGK Iridium IX Spark Plug Box of 4 (ZFR6AIX 11S) offers superior ignition performance for car enthusiasts looking to enhance their engine's efficiency and power. Designed with a fine iridium tip, these spark plugs ensure optimal ignition, lower electrical consumption, and improved throttle response. This set of four spark plugs is ideal for those who demand high reliability and durability from their ignition components, making them a perfect
The NGK Iridium IX Spark Plug Box of 4 (ZFR6AIX-11S) offers superior ignition performance for car enthusiasts looking to enhance their engine's efficiency and power. Designed with a fine iridium tip, these spark plugs ensure optimal ignition, lower electrical consumption, and improved throttle response.This set of four spark plugs is ideal for those who demand high reliability and durability from their ignition components, making them a perfect choice for V8 engines, kit cars, and hot rods. The innovative design also promotes consistent performance under extreme conditions, extending the spark plug's service life.
Trusted by professionals and hobbyists alike, NGK's Iridium IX series is renowned for its quality and precision engineering. Installing these spark plugs could result in smoother engine operation, better fuel economy, and reduced emissions, ensuring your vehicle performs at its best every time you hit the road.
Backed by a reputable brand, this box of four spark plugs is easy to install and compatible with a wide range of vehicles, supporting your passion for tuning and motorsport culture with confidence and efficiency.
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 10 reviews
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Product Reviews
★★★★★ 5
Excellent filter
Size: 7.5" x 8.7" x 1.4"
Perfect fit, installed easily and quickly, airflow arrow was provided, and product was well-made with high-quality materials. Box had a hole, but the filter was in a sealed plastic bag and was undamaged.
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Reviewed in the United States on August 25, 2025
★★★★★ 5
Works as expected in polluted phoenix AZ
Size: 7.5" x 8.7" x 1.4"
these work great for me and the dealr charges $60 to replace one
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Reviewed in the United States on April 26, 2026
★★★★★ 4
Needs modification to fit Lexus TX 350
Size: 7.5" x 8.7" x 1.4"
Does not have a proper fit on a 2024 Lexus TX 350 without some minor modification. The filter casing has a guide that it's supposed fall into one of the pleats like a notch, however, notice this filter has the white strips which I guess are added structural support. I simply cut the 2 strips on the pleat the guide falls into. The filter will not fall apart by doing this. It's a minor inconvenience that can be easily corrected yourself or simply find another filter that does not have anything blocking the pleats the entire width of the filter.
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Reviewed in the United States on January 26, 2026
★★★★★ 5
Fits perfectly
Size: 7.5" x 8.7" x 1.4"
easy to install
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Reviewed in the United States on December 3, 2025
★★★★★ 5
bosch never disappoints
Size: 7.5" x 8.7" x 1.4"
good product+fair price=value for money
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Reviewed in the United States on January 12, 2026