Autolite 255 Copper Non-Resistor Automotive Replacement Spark Plugs (4 Pack)

Autolite 255 Copper Core spark plugs (4-pack) are replacement, vehicle-specific ignition parts engineered for reliable starting and consistent performance. These copper-core plugs feature a copper-glass seal bonding the insulator and terminal post center electrode to ensure full required voltage at the spark gap and provide a 100% leak-proof seal. Constructed with a cold-formed steel shell, precision rolled threads, and a one-piece terminal post for added strength, they reduce misfires via a multi-rib insulator and decrease radio frequency interference and electrode erosion with resistor design. The full copper core electrode enhances thermal conductivity for improved performance and fuel efficiency. Includes 4 spark plugs per unit. Manufacturer Part Number: 255-4PK. OEM Equivalent Part Number: 255. UPC/GTIN: 009100003720. Unit Count: 4.0 Count. Thread Size: 14mm. Core Material: Copper. Top Material Type: Alloy Steel. Compatible with vehicle types: Car, Truck. Lifetime Limited Warranty.

• MAXIMUM PERFORMANCE: Every Copper Spark Plug has a full copper core electrode which provides higher thermal conductivity for better performance in all conditions
• IMPROVED DURABILITY: All Autolite spark plugs are Leak proof and come with a heat fused internal seal for long lasting durability
• CONSTRUCTION: These replacement spark plugs have a copper-glass seal which bonds the insulator and the terminal post center electrode together
• FUEL EFFICIENCY: The Autolite copper automotive replacement spark plug are guaranteed to deliver quick starts, better fuel economy and smooth acceleration
• AUTOLITE ADVANTAGE: Since 1936, Autolite has been a trusted leader and innovator in spark plug technology. You can count on our copper plugs for performance and value, backed by decades of experience and passion