Champion Copper Spark Plug Gaskets 18MM – Single

Champion AN4027-1 Copper Spark Plug Gasket – 18MM

Keep your ignition system sealed and performing to spec with these solid copper spark plug gaskets. Manufactured to current aircraft standards, the Champion AN4027-1 provides a reliable, crush-resistant seal between your spark plug and cylinder head — essential for maintaining compression and preventing exhaust gas leakage.

Features

• Part number: AN4027-1
• Size: 18MM
• Material: Solid copper
• Manufactured to current aircraft standards
• Also available in 14MM

Why Copper?

Copper gaskets offer excellent thermal conductivity and conform reliably under torque, making them the preferred choice for aircraft spark plug applications where a consistent, leak-free seal is critical.