Earl's Performance Hardline Adapter Fittings

Earl's Performance Hardline Adapter Fittings deliver professional-grade, leak-free connections for hardline plumbing across a wide range of high-performance fluid systems. Engineered from stainless steel throughout, this fitting line is built to resist corrosion and maintain a consistent, reliable seal under the pressures and temperatures found in demanding automotive, racing, and custom fabrication environments.

These adapters are compatible with copper, brass, aluminum, and welded steel hydraulic tubing, integrating seamlessly into new builds, OEM upgrades, and hardline replacements alike. Available in both SAE and metric inverted flare thread standards, and offered in straight and angled configurations, the line covers virtually any routing challenge across brake, clutch, fuel, transmission cooler, and power steering hardline systems.

Key Features:

• Stainless Steel Construction — Superior corrosion resistance and long-term durability in harsh operating environments
• Broad Tubing Compatibility — Engineered for use with copper, brass, aluminum, and welded steel hydraulic tubing
• Multiple Connection Types — Inverted flare to inverted flare and inverted flare to NPT configurations available
• SAE and Metric Thread Standards — Suits both domestic and import applications
• Straight and Angled Options — Flexible routing solutions for custom fabrication and tight-clearance installations
• Wide System Compatibility — Suitable for brake, clutch, fuel, transmission cooler, and power steering hardline plumbing
• Sold Individually — Select the exact configuration your application requires

Earl's Performance Plumbing has been a trusted name in high-performance fluid transfer for over five decades, having pioneered the introduction of aviation-grade fluid transfer technology to the automotive performance market. With one of the most comprehensive plumbing product lines in the industry, Earl's hardline adapter fittings are a proven choice for professional race teams, experienced builders, and performance enthusiasts who demand precision-engineered, dependable plumbing solutions.