2 Sets 6AN Female To 3/8" Tube Nut & Sleeve 37 Degree Aluminum Black Hardline

6AN Female To 3/8" Tube Nut & Sleeve Set

This aluminum hardline fitting set connects 3/8-inch hard tubes to 6AN female lines in automotive plumbing systems.

Overview

The 6AN Female To 3/8" Tube Nut & Sleeve Set provides a reliable 37-degree flare connection for custom hardline plumbing projects. This 6AN Female To 3/8" Tube Nut & Sleeve Set is engineered from lightweight aluminum for secure fluid transport in performance vehicles. Mechanics and automotive builders use this 6AN Female To 3/8" Tube Nut & Sleeve Set to join fuel, oil, or coolant lines without leaks.

Built For Performance

• Constructed from high-grade aluminum for lightweight strength.
• Anodized black finish provides excellent corrosion resistance.
• Precise 37-degree flare angle ensures a tight, leak-free seal.
• Includes two complete sets of tube nuts and sleeves.

On-The-Job Use

• Plumbing custom fuel lines in performance vehicles.
• Connecting oil cooler hardlines to flexible hoses.
• Routing brake and clutch fluid lines during chassis builds.

Specs At A Glance

Good To Know

Q: What tools are required for installation? A: A proper 37-degree flaring tool is required to prep the hardline tube before assembly.

Q: Can these fittings be used for high-pressure brake systems? A: Aluminum fittings are generally suited for fuel, oil, and low-pressure cooling lines rather than high-pressure brake systems.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.