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Spark Plug Indexing Washers
Spark Plug Indexing Washers
Spark Plug Indexing Washers
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Spark Plug Indexing Washers

Marsoni M251S
Sale price$15.99
Pay 4 payments of $4.00 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
Spark Plug Indexing WashersIndexed Spark Plugs align the open end of the electrode towards the intake port. The hottest flame meets the new fuel charge for a performance gain, increases h. p, fuel mileage, & plug life. This is a speed secret car racers have used for years. You simply mark the electrode side of the plug with a magic marker on the porcelain. You then shim the plug with washers to align the electrode towards the intake port. Fits 14mm plugs. 4 washers in each kit.
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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
4.9 ★★★★★
Based on 2306 reviews
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Product Reviews
J
Verified Purchase
Joshua T.
Massapequa, US
★★★★★ 5
Used on 2018 honda accord sport.
Color: 40pcs
Needed some of these since i was changing some stuff under my front bumper. They look and function the same as oem. And there are plenty to use as well. Would definetley pick up some of these as your current one will probably break as your taking them out.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 18, 2025
M
Verified Purchase
MI
Waukegan, US
★★★★★ 5
Perfect fit
Color: 20pcs
Perfect replacement retainer clips for my car.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 15, 2026
G
Verified Purchase
Godwin
Grantham, US
★★★★★ 5
use these every day
Color: 20pcs
fits better than OEM and better price
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 13, 2026
M
Verified Purchase
Melanie Mauger
Battle Creek, US
★★★★★ 5
Great in all respects
Color: 20pcs
Worked well for the job, good quality, and seem to be durable. Very easy to use and a good value for the money.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 12, 2025
J
Verified Purchase
Jamby
West Palm Beach, US
★★★★★ 5
2016 Accord
Color: 20pcs
Perfect for the 2016-2017 Honda Accord. Specifically the two holes on the sides of the front grille that are on top of the headlights.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 2, 2026

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