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Description
NGK Iridium IX Spark Plug Box of 4 (ZFR6AIX-11S)NGK Iridium IX spark plugs are specifically designed for the performance enthusiast. Iridium IX provides outstanding acceleration, high fuel efficiency and durability. NGK Iridium IX plugs offer extreme ignitability and exceptional anti fouling. Tapered cut ground electrode provides improved starting, idling and throttle response. The Iridium fine wire center electrode's durability is six times harder than platinum. Iridium alloy's extremely high
NGK Iridium IX spark plugs are specifically designed for the performance enthusiast. Iridium IX provides outstanding acceleration, high fuel efficiency and durability. NGK Iridium IX plugs offer extreme ignitability and exceptional anti-fouling. Tapered cut ground electrode provides improved starting, idling and throttle response. The Iridium fine wire center electrode's durability is six times harder than platinum. Iridium alloy's extremely high melting point is perfect for today's engines. For even greater performance consider upgrading to an NGK Ruthenium HX plug.This Part Fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2007-2009 | Acura | MDX | Base |
| 2005-2008 | Acura | RL | Base |
| 2002-2006 | Acura | RSX | Base |
| 2004-2008 | Acura | TL | Base |
| 2007-2008 | Acura | TL | Type-S |
| 2004-2008 | Acura | TSX | Base |
| 2003-2005 | Honda | Accord | DX |
| 2003-2007 | Honda | Accord | EX |
| 2007 | Honda | Accord | EX-L |
| 2005-2007 | Honda | Accord | Hybrid |
| 2003-2007 | Honda | Accord | LX |
| 2006 | Honda | Accord | LX Special Edition |
| 2005 | Honda | Accord | SE |
| 2007 | Honda | Accord | Special Edition |
| 2006-2007 | Honda | Accord | Value Package |
| 2006-2011 | Honda | Civic | DX |
| 2006-2011 | Honda | Civic | EX |
| 2009-2011 | Honda | Civic | EX-L |
| 2006-2011 | Honda | Civic | LX |
| 2009-2011 | Honda | Civic | LX-S |
| 2002-2005 | Honda | Civic | Si |
| 2002-2009 | Honda | CR-V | EX |
| 2007-2009 | Honda | CR-V | EX-L |
| 2002-2009 | Honda | CR-V | LX |
| 2005-2006 | Honda | CR-V | SE |
| 2003-2004 | Honda | Element | DX |
| 2003-2011 | Honda | Element | EX |
| 2004-2011 | Honda | Element | LX |
| 2007-2010 | Honda | Element | SC |
| 2007-2013 | Honda | Fit | Base |
| 2007-2013 | Honda | Fit | Sport |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
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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]
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4.7 ★★★★★
Based on 7 reviews
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Product Reviews
★★★★★ 5
Convenient for travel
Good for travel when you may not have a glass, a spoon and a place to mix the powdered version with water. Make no mistake, you must still drink at least 8- 12 ounces of water with the capsules, and one serving is 5 capsules. But, this is a bulking agent,!so that is to be expected.
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Reviewed in the United States on November 27, 2025
★★★★★ 5
Seems OK, but only time will tell
Seems OK, but only time will tell
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Reviewed in the United States on January 16, 2026
★★★★★ 5
Soft and ongreasy Cure rate as the prescriptions predicts!
It works like a Physician's prescription. Cure rate is 100%
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Reviewed in the United States on October 10, 2025
★★★★★ 5
Surprisingly Great for Diarrhea + Dropped My LDL Big Time – Sugar-Free Winner!
Size: 2.3 Pound (Pack of 1), Style: Sugar Free 180 count
I started taking this Metamucil Sugar-Free 4-in-1 Psyllium Fiber mainly because I deal with diarrhea more than constipation (opposite of what it's usually advertised for). I was skeptical, but it worked amazingly well—firms things up, reduces urgency and frequency, and gives me normal, regular bowel movements without any cramping or worsening. It's gentle, mixes okay in water (orange flavor is tolerable, not too sweet since it's sugar-free), and I take 2 teaspoons daily.
Even better bonus: after a few months of consistent use, my LDL cholesterol dropped from 110 to 58! That's a huge win for heart health—I wasn't expecting that, but the psyllium fiber really does trap cholesterol and help lower it (backed by studies and Metamucil's own claims). No side effects for me, and it's affordable in bulk.
If you have diarrhea/IBS-D issues or want natural cholesterol support, this is worth trying (start low and drink plenty of water).
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Reviewed in the United States on February 9, 2026
★★★★★ 5
Metamucil 4-in-1 Psyllium Husk GLP-1 Friendly Fiber Supplement, Sugar-Free, 180 teaspoons, Orange
Size: 2.3 Pound (Pack of 1), Style: Sugar Free 180 count
I started taking Metamucil after my doctor recommended boosting my daily fiber intake, and I genuinely wish I had started sooner. This sugar-free orange flavor has become a non-negotiable part of my morning routine.
First, the taste — for a sugar-free supplement, it's surprisingly pleasant. The orange flavor is light and natural, not artificial or overpowering. Mixed into a glass of cold water, it goes down easily without that chalky, gritty aftertaste I dreaded from other fiber products I've tried in the past.
The 4-in-1 benefits are the real selling point for me. I've noticed a genuine difference in my digestive regularity, I feel fuller between meals (which has helped me make better snack choices), and my energy levels feel more stable throughout the day. As someone on a GLP-1 medication, I was thrilled to find a fiber supplement specifically formulated to complement that — it fills a real gap in the market.
The 180-teaspoon count is outstanding value. This container lasts a long time, which means fewer reorders and a lower cost per serving than most comparable products. The scoop is easy to use and the powder dissolves well with a quick stir — no clumping.
My digestion has genuinely improved since making this a daily habit. Less bloating, more consistency, and I just feel better overall. It's one of those quiet little wellness wins that adds up over time.
If you're on the fence, just try it. Simple, effective, great value — this is now a permanent fixture in my pantry. Cannot recommend it highly enough.
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Reviewed in the United States on May 25, 2026