Ultimate Shine™ Flap Disc, 4-1/2" x 5/8"-11, Type 27, Very Fine Grit, Zirconium

Marsoni

M251S

$123.17

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

Ultimate Shine™ Flap Disc, 4-1/2" x 5/8"-11, Type 27, Very Fine Grit, ZirconiumIdeal for mirror finishing jobs For use on aluminum, mild steel and stainless steel Reduced waste; Eco Trim allows trimming the backing pad up to 3 times to expose unused material and extend the life of the product Less plastic; 35% of the weight of the Eco Trim is natural fibers to reduce overall quantity of synthetic components required Specifications Grit Very Fine Diameter 4 1 2" Arbor Size 5 8" 11 Abrasive Material Zirconium Type 27 Max. RPM 7300

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Definitely better than the old plugs that probably had 80k miles on them. The one star off is because I had a misfire after installing. Not sure if I damaged the plug or what, but a reinstall didn't fix the misfire. In my genius, I rushed to try to gap it and ended up breaking the iridium tip. Put the old plug into cylinder 3 (where the misfire was) and it was fine. Gonna have to get a new single tomorrow at my local shop, but a bit frustrating to get a misfire after install.

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Reviewed in the United States on April 27, 2026

Verified Purchase

Britincali

New York, US

★★★★★ 5

Upgrade from OEM

After seeing a quite ludicrous $403 quote to change 4 spark plugs in a Mazda3 I decided to show my son how easy it is. These were an upgrade from OEM parts. They were gapped perfectly for the car. They took 20mins to fit and work fine.

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Reviewed in the United States on February 11, 2026

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ANDRES FIGUEROA

Boise, US

★★★★★ 5

Very good

The best quality. Runs like new again.

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Reviewed in the United States on March 12, 2026

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Ale

Houston, US

★★★★★ 1

garbage spark plugs

misfired after 30 minutes of driving cylinder 4 misfire code, left me stranded on the highway with baby in car. “(9621)” at the end of description is a lie, was not compatible with my vehicle even with compatibility test.

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Reviewed in the United States on May 17, 2026