Alum #6 90 Elbow Union

The Alum #6 90 Elbow Union is a precision hydraulic and pneumatic fitting designed for high-performance automotive fuel, oil, and coolant line applications where space constraints or routing complexity demand a sharp directional change. Built by AEROQUIP—the trusted name in motorsport and professional mechanical systems—this 6 AN male-to-male adapter serves as the backbone for custom plumbing in modified engines, turbo systems, and performance fuel injection setups. Whether you're building a street rod, upgrading a turbocharged engine bay, or fabricating a custom cooling circuit, this fitting ensures reliable, leak-free connections at 90-degree angles without sacrificing flow efficiency.

Machined from aerospace-grade aluminum and finished in blue anodized coating, the Alum #6 90 Elbow Union resists corrosion while maintaining a lightweight profile critical for weight-sensitive builds. The 6 AN designation refers to the industry-standard -6 JIC (Joint Industry Council) connection size, meaning this fitting mates with all standard 6 AN male hose ends, fittings, and adapters found in professional racing and restoration shops. The 90-degree elbow geometry eliminates the need for two 45-degree fittings, reducing overall line length, pressure drop, and potential leak points—a design choice favored by engineers in fuel system tuning and intercooler plumbing where precision routing is non-negotiable. Weighing just 0.06 lbs, it adds minimal mass to your fuel or coolant system while delivering the durability expected in environments subject to vibration, thermal cycling, and high-pressure transients.

Mechanics and fabricators choose this union for custom fuel rails, turbo feed lines, remote oil cooler circuits, and transmission cooler plumbing in both naturally aspirated and boosted platforms. Installation is straightforward: thread both 6 AN male connections hand-tight, then apply a wrench to the hex body for final snug engagement—never over-tighten, as aluminum is softer than steel and damage to the fitting seat compromises the seal. This fitting is compatible with all 6 AN hose assemblies and adapters that meet SAE J518 standards, making it a universal choice for shops that standardize on -6 plumbing for consistency and interchangeability. For anyone serious about engine modifications, fuel system upgrades, or cooling system optimization, the Alum #6 90 Elbow Union is an essential component that combines proven AEROQUIP quality with the compact, efficient design that separates professional builds from amateur installations.