Earl's Performance Swivel-Seal Straight NPT Hose Ends

Earl's Performance Swivel-Seal™ Straight NPT Hose Ends are a purpose-built solution for connecting braided performance hose directly into female NPT ports — eliminating the need for separate adapter fittings. The result is a cleaner, lighter plumbing installation with fewer potential leak points, making these hose ends a trusted choice for racing, high-performance street, marine, and custom fluid system builds.

Backed by Decades of Aerospace-Derived Engineering

Earl's Performance Plumbing brought aviation fluid transfer technology to the automotive performance market over five decades ago, and top-tier racing teams continue to rely on their fittings. Every Swivel-Seal hose end is precision-machined from aluminum alloys that meet or exceed aerospace hose fitting standards, ensuring consistent, trouble-free performance in the most demanding environments.

Key Features:

• Direct NPT Port Connection — threads directly into female NPT ports without a separate adapter, reducing weight and minimizing potential leak points
• Independent Swivel Coupler — the NPT coupler rotates independently of the hose end, allowing it to be threaded into the port while the hose and fitting remain stationary for easier, more controlled installation
• 360° Post-Installation Adjustment — stainless steel retention pins allow full rotational adjustment after the fitting is installed, enabling precise hose routing even in tight or complex plumbing layouts
• Dual-Plane Anti-Seepage Seal — Earl's original sealing geometry delivers a reliable, leak-free connection in high-pressure fuel, oil, coolant, and brake fluid systems
• Aerospace-Proven Nipple-and-Cutter Design — a construction method with over four decades of proven aerospace performance, maximizing fluid flow capacity while ensuring long-term sealing integrity
• Precision-Machined Aluminum Construction — materials meet or exceed aerospace hose fitting requirements for strength, durability, and corrosion resistance
• Broad Hose Compatibility — designed for use with Earl's Perform-O-Flex, Pro-Lite 350, and Auto-Flex braid-protected hose lines

The Swivel-Seal Straight NPT line is available across a wide range of AN hose sizes and NPT thread configurations, accommodating diverse plumbing applications in racing, high-performance street, and custom fluid system builds. Whether you're routing fuel, oil, coolant, or brake fluid, Earl's Swivel-Seal NPT hose ends deliver the installation flexibility and leak-free reliability that motorsport professionals have trusted for generations.