#3 Brass Olive

The #3 Brass Olive from EARLS is an essential compression ferrule designed for professional-grade hydraulic and fuel line assemblies in high-performance automotive applications. Whether you're building a custom engine bay, upgrading your fuel delivery system, or fabricating a full custom fuel line kit, this brass olive serves as the critical sealing component that prevents leaks under pressure and vibration. Mechanics and fabricators rely on EARLS compression fittings because they deliver consistent, leak-free performance in demanding engine environments where fuel or brake fluid temperatures and pressures fluctuate continuously.

This brass olive works by compressing against the inner tubing wall when the fitting is torqued down, creating a permanent metal-to-metal seal that resists vibration, thermal cycling, and pressure spikes without relying on rubber O-rings or thread sealant tape. The brass material provides superior corrosion resistance compared to steel alternatives, especially in fuel systems exposed to ethanol blends or moisture intrusion, while maintaining excellent machinability for custom fitting applications. The compact 1.3 x 0.45 x 3 inch profile and lightweight 0.04 lbs design ensure it integrates seamlessly into tight engine bays without adding bulk, making it ideal for both OEM restoration and modern performance builds where every millimeter counts.

Fabricators, custom builders, and serious enthusiasts choose EARLS #3 Brass Olive components when assembling fuel systems for carbureted engines, EFI conversions, turbo setups, and custom hydraulic applications where reliability is non-negotiable. This olive pairs with standard AN or JIC compression fittings and accommodates common tubing diameters used in motorsports fuel line assemblies, making it a stock component for anyone regularly assembling or repairing high-flow fuel systems. Installation requires only hand tools and a torque wrench set to manufacturer specifications—no special equipment needed, though proper assembly technique ensures the seal performs under boost, sustained RPM, and extreme temperature variations.