★★★★★ 5
A reliable set of spark plugs.
They’re made in Germany, what else can you say
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 24, 2026
MRR FS6 21x10.5 35 5x112mm 66.6mm Gloss Black
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
MRR FS6 21x10.5 35 5x112mm 66.6mm Gloss BlackSKU: FS0621A55xx12R GB 51235 MRR Wheels FS6 in 21" x 10. 5" Gloss Black. Lightweight, flowforged construction for improved performance and responsive handling. Engineered for precise fitment and everyday durability. Flowforged construction helps reduce weight vs. traditional cast. Hubcentric fitment where applicable; accepts OEM center caps on select models. TPMS compatible and designed for street use. Bolt pattern: 5x112 Offset (ET): 35 Center bore
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4.1 ★★★★★
Based on 195 reviews
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Product Reviews
★★★★★ 5
Work as well as the NGK's
Bought for a 2016 Mazda 6, I had NGK's in it for 5 months and had misfires, didnt have the money to throw more NGK's at it for troubleshooting. Bought these to try and they work great so far.
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Reviewed in the United States on April 29, 2026
★★★★★ 4
Faulty plug? Otherwise great set
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
★★★★★ 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
★★★★★ 5
Very good
The best quality. Runs like new again.
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Reviewed in the United States on March 12, 2026
