Union Adapter Fitting -20AN x -20AN

The Union Adapter Fitting -20AN x -20AN from Vibrant Performance is a critical hydraulic junction component designed for high-performance fuel, oil, and coolant line systems in modified vehicles. Whether you're building a custom engine bay, upgrading to a remote-mounted turbo setup, or integrating a complex fuel management system, this adapter allows seamless connection between two -20AN hose fittings. Mechanics and enthusiasts rely on union adapters to consolidate plumbing runs, reduce fitting count at manifolds, and maintain system integrity under boost and elevated operating temperatures.

Manufactured to Vibrant's strict tolerances, this -20AN union adapter features precision-engineered threads and a robust internal design that handles sustained pressure without leakage or fitment drift. The dual -20AN (AN20) port configuration accepts SAE straight-thread connections, ensuring compatibility with standard braided hose ends, banjo fittings, and hard-line adapters common in fuel rails, transmission cooler circuits, and custom radiator setups. Vibrant's engineering ensures repeatable sealing when properly installed with AN-spec thread sealant, and the compact 4.53 x 1.5 x 5.91-inch footprint makes it ideal for tight engine compartments where space is at a premium. At just 0.21 lbs, weight addition is negligible—critical for suspension-tuned builds and weight-sensitive applications.

This fitting is essential for custom turbo installations, fuel system upgrades, and cooling circuit modifications where OEM topology won't accommodate aftermarket components. Fabricators routinely specify union adapters to simplify pressure testing, support future circuit reconfiguration, and reduce stress concentration at single-point junctions. Install with care—ensure threads are clean, apply appropriate AN thread sealant (not PTFE tape on -AN fittings), and torque to manufacturer specifications to prevent weeping under load. Compatible with any -20AN equipped system—fuel delivery, oil cooling, transmission cooling, or intercooler setups—this adapter is a shop staple for anyone serious about custom engine builds and reliability-focused modifications.