YOUR PARTS. OUR PASSION.
Over 20,000 auto parts in stock from trusted brands with fast, free shipping on every order.
FIND PARTS FOR YOUR VEHICLE
Search by part numberFree Shipping
Free shipping on every order. No minimum required.
OEM-Quality Brands
NGK, ACDelco, Motorcraft, Champion — brands pros trust.
Ready To Ship
In-stock parts ship fast, delivered to your door.
Secure Checkout
SSL-secured, encrypted transactions every time.
Trusted by thousands of buyers
7517 Customer feedback score
99.9% positive feedback
Same team, same service — now on txnsupply.com with free shipping on every order.
★★★★★
“Good quality as described, thanks. Will purchase again from seller.”
★★★★★
“works good. good deal”
★★★★★
“Order completed successfully—tracked and on time”
Shop Trusted Brands
Shop by Category
Best-Selling Spark Plugs
Top-rated spark plugs from the brands mechanics trust — ready to ship today.
-
Autolite
Autolite 25 Copper Core Spark Plugs - 8 Pack
$40.77
-
ACDelco
8 Pack Genuine GM ACDelco R45S Spark Plugs 19362366
$33.77
-
ACDelco
8 Pack GM ACDelco #6 RAPIDFIRE Platinum Spark Plugs
$62.77
-
Champion
Champion 71 Copper Spark Plug 71S 71G RC12YC - 8 Pack
$36.77
-
NGK
8 Pack NGK V-Power 4177 Spark Plugs TR6
$42.77
-
Champion
Champion 828M Marine Spark Plug QL77JC4 - 4 Pack
$30.77
-
NGK
NGK 2983 Spark Plugs CR6HSA Spark Plug - 2 Pack
$16.77
-
NGK
NGK BPR4ES Spark Plug - 4 Pack
$23.77
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
-
"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
-
"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
-
"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
View all-
September 17, 2026
Check Engine Light and Misfires: First Steps Before Repairs
A misfire is unburned mixture. Random P0300 points at something shared: plugs of the same age, fuel, or a vacuum leak. A single-cylinder code points at that well — plug, coil,
-
September 16, 2026
Cold Start Problems: When Spark Plugs Are the Real Issue
Cold Start Problems: When Spark Plugs Are the Real Issue is a maintenance question with a parts answer. The useful version is: confirm the symptom, confirm the catalog number,
-
September 15, 2026
Spark Plug Gap Basics: Why Correct Gap Still Matters
Spark plug gap still matters on engines that specify a gap and on plugs that are not pre-set for that application. Too wide a gap stresses the coil. Too tight a gap can misfire