★★★★★ 5
A reliable set of spark plugs.
They’re made in Germany, what else can you say
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Reviewed in the United States on April 24, 2026
ATB™ NovoFlex Small-Diameter Honing Tool, 0.433" Dia. x 2-1/3" L, 180 Grit
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
ATB™ NovoFlex Small-Diameter Honing Tool, 0.433" Dia. x 2-1/3" L, 180 GritTypical applications include honing, creating cross hatched surface pattern for oil retention, cylinder port area deburring and eliminating inside flashing These brushes are ideal for reaching into holes and crevices where other brushes cannot Designed with round, abrasive beads fastened to the end of flexible nylon filaments sized to address smaller applications such as brake cylinders, hydraulics and valve guides This self centering tool will
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Your ATB™ NovoFlex Small-Diameter Honing Tool, 0.433" Dia. x 2-1/3" L, 180 Grit orders ship within 1-2 business days.
Delivery Options:
- Standard: 3-7 business days
- Fast: 2-3 business days
- Express: 1-2 business days
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You'll receive a tracking link by email once your ATB™ NovoFlex Small-Diameter Honing Tool, 0.433" Dia. x 2-1/3" L, 180 Grit ships.
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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]
- Please click here for more details>>> Return & Exchange Policy
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4.7 ★★★★★
Based on 388 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
