SKU: 580403
Fragola -3AN Steel Bulkhead Tee – On Run
The Fragola Engineered with precision and crafted from premium-quality steel, this bulkhead tee adapter is the top choice for racers, off-road enthusiasts, and car builders who demand leak-free connections, maximum durability, and unrivaled performance. Whether you’re plumbing a fuel, brake, or steering system through a firewall or securing lines on a tube chassis, Fragola’s -3AN Steel Bulkhead Tee delivers unmatched reliability for your high-stakes applications. Here’s why this fitting is the best choice for your vehicle and how it outshines all other options on the market.
Why Fragola
- Superior Engineering and Durability: Fragola Performance Systems has spent years researching, testing, and perfecting their fittings to ensure they meet the highest standards. The -3AN Steel Bulkhead Tee is crafted from high-grade steel with a zinc-coated finish for corrosion resistance, ensuring long-lasting performance in the harshest conditions, from off-road races like the Baja 1000 to street performance builds. Unlike aluminum alternatives, steel offers greater strength and resistance to over-tightening, reducing the risk of distortion or leaks.
- Leak-Free Performance: Featuring a 37-degree JIC-style flare and 3/8″-24 thread, this fitting ensures a tight, secure connection every time. Fragola’s meticulous design minimizes the risk of leaks, even under high-pressure fluid transfer, making it ideal for fuel, brake, or steering systems.
- Versatile Applications: Designed to pass connections through firewalls or secure hoses on tube chassis, the -3AN Bulkhead Tee is perfect for motorsports, off-road racing, and custom builds. It’s trusted in extreme events like the King of the Hammers, Dakar Rally, and Formula SAE, proving its reliability across diverse applications.
- Precision Manufacturing: Proudly made in Fragola’s family-owned facility in Southington, Connecticut, 99% of Fragola’s products, including this steel bulkhead tee, are manufactured in-house to ensure uncompromising quality. The company’s commitment to American-made components guarantees consistency and performance.
- Outperforms Competitors: Unlike generic fittings, Fragola’s bulkhead tee is designed with J-gauge threads and a one-piece construction for enhanced strength. Its steel composition outperforms aluminum fittings in high-torque scenarios, preventing damage during installation and ensuring a secure fit.
What’s Included
When you purchase the Fragola -3AN Steel Bulkhead Tee – On Run (Part #FRA-580403), you receive:
- One (1) -3AN Steel Bulkhead Tee – On Run Fitting: Precision-machined steel fitting with a 37-degree JIC flare and 3/8″-24 thread, designed for secure fluid transfer through firewalls or chassis.
- Zinc-Coated Finish: Provides corrosion resistance for durability in harsh environments.
Optional Bulkhead Nut: Note that the bulkhead nut is sold separately (e.g., Fragola -3AN Bulkhead Nut, Part #FRA-481603). Check with your retailer to confirm if included or required for your application.
Vehicle Compatibility
The Fragola -3AN Steel Bulkhead Tee – On Run is a universal fitting designed for custom plumbing applications and is compatible with a wide range of vehicles, particularly those used in performance and racing contexts. It is not limited to specific year, make, or model but is ideal for:
- Motorsport Vehicles: Suitable for race cars in events like Formula SAE, Score International Baja 500, Mint 400, and Crandon International.
- Off-Road Vehicles: Perfect for off-road racing in events like King of the Hammers, Dakar Rally, and Tatts Finke Desert Race.
- Custom Street Builds: Ideal for hot rods, muscle cars, and custom vehicles requiring high-performance fuel, brake, or steering systems.
- Specific Applications: Commonly used in vehicles with AN-based plumbing systems, including fuel lines, brake lines, and steering systems. Consult your vehicle’s specifications to ensure compatibility with -3AN fittings.
For precise fitment, verify your vehicle’s plumbing requirements, as this fitting is designed for custom installations rather than OEM replacements.
Packaging: 7″ x 4″ x 1″ and a weight of 0.08 lbs.





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