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Best-Selling Spark Plugs
Top-rated spark plugs from the brands mechanics trust — ready to ship today.
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Autolite 25 Copper Core Spark Plugs - 8 Pack
$40.77
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8 Pack Genuine GM ACDelco R45S Spark Plugs 19362366
$33.77
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8 Pack GM ACDelco #6 RAPIDFIRE Platinum Spark Plugs
$62.77
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Champion 71 Copper Spark Plug 71S 71G RC12YC - 8 Pack
$36.77
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NGK BPR4ES Spark Plug - 4 Pack
$23.77
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NGK 2983 Spark Plugs CR6HSA Spark Plug - 2 Pack
$16.77
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8 Pack NGK V-Power 4177 Spark Plugs TR6
$42.77
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Champion 828M Marine Spark Plug QL77JC4 - 4 Pack
$30.77
Your Trusted Source for Quality Auto Parts
At TXN Supply Co, we're passionate about keeping your vehicle running at its best. With over 20,000 parts in stock from the brands you trust — NGK, Champion, ACDelco, Motorcraft, and more — we have everything you need to get the job done right.
Free shipping on every order. No minimums. Just great parts at great prices.
Shop All PartsWhat Our Customers Say
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"Fast shipping, great prices!"
Ordered NGK plugs on Monday and they arrived Wednesday. Fit perfectly on my F-150. Will definitely order again!
— James...., Orlando, FL
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"Huge selection, easy to find parts"
Found exactly what I needed for my Chevy Silverado. The search made it easy and the price was better than the auto parts store near me.
— Maria...., Houston, TX
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"My go-to for auto parts"
I've ordered from TXN Supply Co three times now. ACDelco filters, Champion spark plugs — always OEM quality, always fast. Highly recommend.
— Tom W...., Cupertino, CA
From the Auto Parts Blog
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September 26, 2026
Best Spark Plugs for Ram 2500: Complete Guide
Best spark plugs for a Ram 2500 still means the correct catalog number for that year and engine. Brand preference only matters after Ram 2500 fitment is locked. Iridium is typical
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September 25, 2026
Best Spark Plugs for Lexus RX: Complete Guide
Best spark plugs for a Lexus RX still means the correct catalog number for that year and engine. Brand preference only matters after Lexus RX fitment is locked. Iridium is typical
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September 24, 2026
Ford Fusion Tune-Up Checklist: Spark Plugs, Coils, and Filters
A Ford Fusion tune-up is plugs, boots or coils if they are weak, and the filters that keep the mixture clean. This checklist is for Ford Fusion engines that still use serviceable