Spark Plugs for Every Engine — Copper, Platinum & Iridium

Your engine's performance begins with a quality spark plug. At Texan Supply Company, we stock thousands of spark plug SKUs covering domestic, import, and diesel vehicles — from standard copper designs to long-life platinum and iridium options. Whether you're maintaining a daily commuter or servicing a fleet, we carry the exact OE or upgraded fit for your application.

Spark plugs fire millions of times over their service life, igniting the air-fuel mixture that powers every combustion stroke. A worn or fouled plug causes hard starts, rough idle, engine misfires, and reduced fuel economy. Replacing them on schedule — typically every 30,000 miles for copper, 60,000 for platinum, and 100,000+ miles for iridium — keeps combustion efficient and emissions low.

Top Spark Plug Brands We Carry

• NGK Spark Plugs — trusted by OEM manufacturers worldwide, available in copper, platinum, and iridium grades for almost every vehicle on the road
• Champion Spark Plugs — over 90 years of American ignition expertise, with copper and platinum plugs for a wide range of applications
• ACDelco Spark Plugs — GM OE-specification plugs for Chevrolet, GMC, Buick, and Cadillac engines
• Autolite Spark Plugs — quality performance at an accessible price, with full coverage for domestic and import vehicles
• Motorcraft Spark Plugs — Ford factory-specification plugs engineered for F-150, Mustang, Explorer, and all Ford/Lincoln/Mercury engines

Ready for a long-term upgrade? Switch to iridium spark plugs — the industry's premium choice for longevity, consistent cold-start performance, and ultra-precise firing in turbocharged or high-compression engines. Iridium's fine center electrode delivers a focused spark with minimal voltage demand, reducing ignition coil wear and improving throttle response over the full plug life.