Earl's Performance Stainless Steel AN Union Fittings

Earl's Performance Stainless Steel AN Union Fittings are precision-machined plumbing connectors engineered to deliver secure, leak-free connections across high-performance fluid systems. Built on a legacy rooted in aviation-grade plumbing technology, these unions bring the same trusted craftsmanship that professional race teams have depended on for decades to any custom plumbing build.

Key Features:

• Solid stainless steel construction provides outstanding corrosion resistance and long-term durability in the most demanding environments
• Precision-machined AN male threads ensure proper alignment, consistent sealing, and full compatibility with standard AN plumbing components
• Suitable for fuel, oil, coolant, brake fluid, and transmission cooler line applications
• Available in multiple configurations — including straight same-size and reducer styles — to accommodate a wide range of plumbing layouts
• Designed and manufactured in the USA to meet stringent performance standards
• Legal for use on emissions-controlled, non-emissions-controlled, and race-only vehicles

Earl's Performance Plumbing was founded by Earl Fouts in 1955 in Lawndale, California, with a mission to supply high-quality military aircraft surplus plumbing components directly to the racing industry. As the surplus market evolved, Earl pioneered a purpose-built range of hoses and fittings that continue to set the standard today. Innovations like flexible stainless-steel PTFE-lined hoses and the patented Swivel-Seal adjustable hose end helped establish Earl's as one of the most trusted names in AN plumbing. Today, Earl's collaborates with top-level motorsport programs and continues to refine products to meet the demands of elite competition. Whether assembling a custom fuel system, upgrading brake lines, or completing a full race plumbing build, Earl's Stainless Steel AN Union Fittings deliver the professional-grade connection quality and reliability your project demands.