Earl's Performance Straight Steel AN Bulkhead Union Fittings

Earl's Performance Straight Steel AN Bulkhead Union Fittings are purpose-built to route AN plumbing cleanly and securely through firewalls, frame rails, body panels, and other structural barriers in high-performance street and race applications. Engineered with a through-frame style design, these fittings mount directly within sheet metal or structural tubing, eliminating the need for additional brackets or mounting hardware while keeping fluid lines routed neatly and professionally.

Key Features:

• Steel construction delivers exceptional strength and long-term durability in demanding motorsport and custom build environments
• Through-frame design routes AN plumbing directly through firewalls, frame rails, and panels without additional mounting hardware
• Provides secure, leak-free connections on both sides of any barrier — suitable for fuel, oil, hydraulic, and other fluid system applications
• Each fitting includes a matching flanged bulkhead nut for a complete, ready-to-install solution
• Fully compatible with the complete Earl's AN plumbing ecosystem, including hoses, hose ends, and adapters
• Available across multiple AN sizes to suit any plumbing layout or system requirement
• Made in the USA

About Earl's Performance: Founded in 1955, Earl's Performance Plumbing pioneered the use of aviation-grade fluid transfer technology in the automotive performance market. Earl's invented the self-indexing Swivel Seal hose end and was the first to introduce flexible stainless steel PTFE-lined hoses to motorsport — innovations that set the standard the entire industry still follows today. Trusted by top funny car, sprint car, and Indy car teams worldwide, Earl's offers the most complete line of performance AN plumbing products available, making these bulkhead union fittings a proven solution for race cars, street rods, and custom performance builds.