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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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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
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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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Champion 71 Copper Spark Plug 71S 71G RC12YC - 8 Pack
$36.77
Your Trusted Source for Quality Auto Parts
At TXN Supply Co, we're passionate about keeping your vehicle running at its best. With over 19,000 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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August 30, 2026
Ignition Coil vs Spark Plug: How to Tell Which One Failed
Ignition Coil vs Spark Plug: How to Tell Which One Failed is a comparison of catalog numbers and applications, not a popularity contest. the first brand and the second brand can
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Road Trip Prep Checklist: Ignition and Basic Maintenance is a maintenance question with a parts answer. The useful version is: confirm the symptom, confirm the catalog number,
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August 28, 2026
Champion vs Autolite Spark Plugs: Which Should You Buy?
Champion versus Autolite is a real buying decision for a lot of domestic engines, small engines, and value-minded tune-ups. It is not a generic “match any copper plug” question.