#6 Male x 3/8 MPT Gauge Adapter Inline

The FRAGOLA #6 Male x 3/8 MPT Gauge Adapter Inline is a precision hydraulic and pneumatic fitting designed for custom fuel, oil pressure, and brake line configurations in performance automotive builds. This adapter serves as a critical bridge component in engine bay plumbing systems where gauge instrumentation must be tapped into existing hydraulic lines without interrupting fluid flow. Whether you're building a custom engine management setup, installing mechanical gauges on a restomod, or adding telemetry sensors to a track car, this inline adapter provides a reliable junction point for pressure monitoring hardware.

Manufactured by FRAGOLA—a brand trusted by serious fabricators and race teams for decades—this adapter features a #6 AN male inlet (industry-standard -6 connection size) matched to a 3/8 MPT male outlet. The inline design allows gauge sensor ports to branch laterally without requiring system disassembly; fluid passes through the primary port while the secondary opening accepts a pressure transducer, mechanical gauge, or data acquisition sensor. FRAGOLA adapters are precision-machined aluminum with JIC-compliant sealing surfaces, ensuring zero-leak performance under both static and dynamic pressure cycling—essential when monitoring critical engine parameters at sustained RPM or during sustained acceleration.

Professional engine builders, fuel system integrators, and DIY enthusiasts working on LS swaps, turbocharged conversions, or vintage race cars will find this adapter invaluable. Its robust design and reliable performance make it suitable for various applications, including fuel, oil, coolant, and brake pressure lines. With the FRAGOLA #6 Male x 3/8 MPT Gauge Adapter Inline, you can confidently monitor your engine's performance without compromising fluid integrity.