CA21821N FUEL CAP

The **Fuel Cap CA21821N** is a non-vented, auxiliary-filler aircraft fuel cap designed to replace original caps on compatible Piper aircraft. It features a fuel-resistant elastomer seal to resist swelling and a reinforced lever mechanism engineered to resist bending or cracking during repeated use. Its design emphasises a shorter, easier-to-remove cap body suited for auxiliary fuel-system filler openings. --- ## Applications - Replacement of worn or damaged auxiliary fuel-filler caps on compatible Piper aircraft - Refuelling operations where a non-vented, secure cap is required - Maintenance or overhaul of auxiliary fuel tank filler interfaces - Use where improved durability and reliable sealing are desired over original OEM caps --- ## Why CJ Aerospace? CJ Aerospace supplies trusted components and support for aviation maintenance operations. We offer fast local delivery, expert technical support, and industry-proven products that keep aircraft maintenance efficient and safe. - 🇦🇺 **Australian-owned & operated** - 📦 **Stocked locally in Australia for fast dispatch** - 🔍 **Specialist knowledge of aviation-grade fuel-system components** - 🧰 **Used by leading MROs & maintenance professionals** > ✉️ [Contact us sales@cjaerospace.com.au](mailto:sales@cjaerospace.com.au) > Need installation guidance or technical documentation? Contact CJ Aerospace for expert support.

- **Fuel-resistant elastomer seal** to maintain integrity under exposure to aviation fuels - **Shorter, auxiliary-filler design** for easier removal and installation than standard main-tank caps - **Reinforced lever and closure mechanism** engineered to resist deformation or cracking under load or repeated use - **Non-vented cap type**, suitable for auxiliary fuel tanks where a sealed cap is required - **PMA-approved FAA-PMA replacement** — compliance with airworthiness requirements for eligible aircraft