NGK Iridium IX Spark Plug Box of 4 (ZFR5FIX-E)

NGK Iridium IX Spark Plug Box of 4 (ZFR5FIX-E)

Marsoni

M251S

$46.52

Get it in 3 business days with 1 day shipping. Friday, May 29

NGK Iridium IX Spark Plug Box of 4 (ZFR5FIX-E)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

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Reviewed in the United States on April 2, 2021

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ShopWeez

Charlottesville, US

★★★★★ 5

Relief for dry mouth without gum irritation

Big improvement for users with sensitive gums. These relieve dry mouth during the night almost as well as the regular tabs. Some complained about a residual gel left on the gums. 🙄Just wipe it off. It’s a small thing.

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Reviewed in the United States on May 4, 2026

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Bronx Mike

Carnegie, US

★★★★★ 5

An easy fix for dry mouth

Excellent for dry mouth.

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Reviewed in the United States on May 6, 2026

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Discerning Buyer

Lexington, US

★★★★★ 1

This version doesn’t work

I used these 2 nights in a row. I was hoping Oracoat found a solution to the problem people like me have with the regular Xylimelts: irritation of gums. As others have noted the “sensitive” version doesn’t melt and the goo that remains can be difficult to remove. I didn’t have too much trouble after the first night. However, the second day after use, it was so hard to get the remains out, I wound up with a very sore spot from digging it out. I will toss the rest. It’s too bad this effort fizzled. I hope Oracoat will find a solution For sensitive mouths. In the b meantime, I will use the original for a few nights and then stop before repeating. The idea behind the original product is fantastic. Unfortunately this attempt to make it usable for people with sensitive mouths hasn’t worked. Please try again.

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Reviewed in the United States on March 25, 2025

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Masey

Birmingham, US

★★★★★ 5

Helped with Dry Mouth

Followed the instructions on the box and everything turned out amazing! Absolutely love the results and relief I felt

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Reviewed in the United States on April 21, 2026