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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.
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4.0 ★★★★★
Based on 1830 reviews
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Verified Purchase
GhostFingersXP
Port Orchard, US
★★★★★ 5
Book Reading Wife Approved
Size: Standard (18-Inch), Color: Sage Green
I purchased this for my wife who reads quite a bit and she absolutely loves it. She said it feels soft, is the right size for her, and makes book reading more comfortable for her. I call it a win.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 23, 2026
A
Verified Purchase
A Brown
Belleville, US
★★★★★ 3
Not good quality
Size: Standard (18-Inch), Color: Dark Grey
Comfy, however it’s getting flat an only had it a week
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Reviewed in the United States on April 27, 2026
L
Verified Purchase
Linda F. Del Valle
Lexington, US
★★★★★ 5
Love this ❤️❤️
Size: Standard (18-Inch), Color: Rose Pink
Love love super comfy soft yet firm Great quality good value the material is sturdy
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Reviewed in the United States on June 3, 2026
R
Verified Purchase
RW
New York, US
★★★★★ 5
Heaven sent
Size: Jumbo (25-Inch), Color: Dark Grey
My back suddenly decided to show me who's the boss. This reading pillow has been a God send! It is substantial without being too hard, soft enough to be comfortable without being too soft, absolutely no lumps! The outside cover is removable to allow for machine washing and is so soft to the touch. There is a handle on the back that makes it easy to move. This has allowed me to be able to sit upright, much appreciated!
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Reviewed in the United States on May 19, 2026
S
Verified Purchase
Sonja Foster
Cuba, US
★★★★★ 5
Huge, super soft, cozy pillow!
Size: Jumbo (25-Inch), Color: Sage
This pillow is awesome! As a plus size person who can't sleep laying flat, the size and support level is perfect. This pillow is huge! The quality is very high, the stitching is precise, and the sage green material is soft and cozy. Great value for the price! I highly recommend this reading pillow!
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Reviewed in the United States on May 28, 2026

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