Earl's Performance 90-Degree Aluminum AN to NPT Swivel Adapters

Earl's Performance 90-Degree Aluminum AN to NPT Swivel Adapters are purpose-built connectors engineered to bridge two of the most widely used thread standards in performance and industrial fluid plumbing. Designed for fuel, oil, and coolant system applications, these adapters bring the aviation-derived fluid transfer expertise that has defined Earl's since 1955 to automotive, racing, marine, and powersports builds.

The defining feature of this adapter line is the swivel design, which allows hose and line routing to be finalized and adjusted even after the NPT side has been fully tightened — eliminating stress on lines in tight or complex plumbing layouts. This makes installation significantly easier and cleaner in crowded engine bays or custom fabrication environments.

Key Features:

• 90-Degree Swivel Design — Hose orientation can be set after the NPT side is secured, enabling precise routing without twisting or stressing lines
• AN to NPT Thread Compatibility — Connects two of the most common thread standards in performance plumbing, providing versatility across a wide range of applications
• Precision-Machined Aluminum Construction — CNC-machined to exacting tolerances for consistent, leak-free performance in demanding environments
• Anodized Finish — Provides corrosion resistance and a clean, professional appearance
• Lightweight Design — Aluminum construction minimizes weight without sacrificing strength or durability
• Broad Application Range — Suited for custom plumbing in racing, street performance, marine, and powersports platforms
• Available in Multiple Size Configurations — A wide selection of AN and NPT size pairings covers virtually any plumbing requirement
• Made in the USA — Built to Earl's rigorous quality standards

Installation Note: The AN side seals on the flare (cone), not the threads. The NPT side seals on the threads — apply Teflon tape or a compatible thread sealant to the NPT side during assembly. Do not overtorque either connection.

As a member of the Holley Performance family of brands, Earl's Performance has supplied top motorsport teams, engine builders, and fabrication shops with industry-leading fluid plumbing solutions for decades. These swivel adapters reflect that same commitment to engineering precision and real-world performance reliability.