M-674 GASKET 18MM COPPER , (PK100)

The **Champion M-674** is a **copper spark plug gasket** designed to provide a tight, gas-sealing interface between 18mm spark plugs and cylinder heads in piston-engine aircraft. This crush-style gasket is essential for maintaining compression, preventing combustion leaks, and ensuring safe engine operation. Manufactured from **high-purity copper**, the M-674 deforms slightly during installation to provide a precise and durable seal under high-temperature and high-pressure conditions. --- ## Applications - Compatible with **Champion 18mm spark plugs** used in certified piston aircraft engines - Ideal for routine spark plug installation or replacement during maintenance - Suitable for **general aviation aircraft and piston engine platforms** --- ## Why CJ Aerospace? CJ Aerospace supplies trusted ignition solutions and components for general aviation and turbine-powered aircraft. We provide fast local delivery, technical support, and quality products trusted by aviation professionals. - 🇦🇺 **Australian-owned & operated** - 📦 **Stocked locally in Australia for rapid dispatch** - 🔧 **OEM-quality ignition components** - 🛠️ **Preferred by leading MROs and operators** > ✉️ [Contact us: sales@cjaerospace.com.au](mailto:sales@cjaerospace.com.au) > 💬 Need help with installation or part compatibility? Contact CJ Aerospace for personalised support.

- **OEM-quality copper gasket** for 18mm aviation spark plugs - **Crush-washer design** ensures proper sealing and heat transfer - **Resists hot gas blow-by**, pre-ignition, and thermal cycling effects - **High-conductivity copper** aids in spark plug heat dissipation - **Consistent thickness and deformation properties** for repeatable torque values - **Lightweight and compact** — ideal for field service kits or bulk stocking