Earl's Performance Ano-Tuff Aluminum AN Union Reducer Fittings

Earl's Performance Ano-Tuff AN Union Reducer Fittings are precision-machined aluminum fittings engineered to create reliable, leak-free connections between AN fluid lines of differing sizes. Designed for demanding high-performance plumbing applications, this fitting line is trusted by professional racers and custom builders for use in fuel systems, oil lines, transmission coolers, power steering circuits, and cooling systems.

Exclusive Ano-Tuff Hard-Coat Anodizing:

• Military-spec hard-coat anodizing process that physically penetrates the aluminum surface — providing protection that goes far beyond a standard surface coating
• Delivers superior wear and corrosion resistance throughout, including inside, outside, and across all threaded surfaces, significantly reducing the risk of thread galling
• Top professional funny car teams report Ano-Tuff coated fittings lasting twice as long as traditional anodized fittings
• Low-gloss black finish delivers a clean, aggressive appearance suited to any high-performance engine bay or custom build

Precision Aluminum Construction:

• Precision machined from high-strength aluminum for an excellent strength-to-weight ratio
• Proudly manufactured in the USA to exacting quality and dimensional standards
• Standard AN union reducer configuration ensures broad compatibility across AN plumbing systems
• Suited for a wide range of fluid transfer applications including fuel, oil, coolant, power steering, and transmission cooling circuits
• Available across a comprehensive range of AN sizes and reducer configurations to accommodate virtually any plumbing layout or custom application

About Earl's Performance:

Founded in 1955 by Earl Fouts in Lawndale, California, Earl's Performance Products pioneered the use of aviation-grade plumbing components in the automotive performance market — originally supplying high-quality military aircraft surplus plumbing components directly to the racing industry. Today, Earl's offers one of the most complete lines of adapter fittings in the industry and remains the trusted choice of professional race teams and performance enthusiasts around the globe.