#3 Stainless Gauge Line Kit 4'

The #3 Stainless Gauge Line Kit 4' from AutoMeter is a purpose-built fluid transmission line assembly designed for mechanics and enthusiasts installing mechanical pressure gauges on engines, transmissions, and hydraulic systems. This braided stainless steel kit eliminates guesswork during gauge installation by providing a complete, pre-engineered solution with matched fittings and correct line length for typical engine bay layouts. Whether you're upgrading to manual boost controllers, oil pressure monitoring, or transmission temperature diagnostics, this gauge line kit ensures professional-grade reliability without improvisation.

The kit features braided stainless steel construction throughout, which resists corrosion, thermal degradation, and abrasion from engine vibration—critical factors in high-heat engine compartments. Both ends terminate in #3 AN (AN3) female fittings, allowing seamless connection to gauge ports and source sensors rated for #3 AN standards. The 4-foot length accommodates most single-engine platform installations, providing enough slack for routing around alternators, intake manifolds, and other obstacles without kinking or restriction. Stainless braid over the inner hose also provides visual confidence that the line will withstand decades of thermal cycling without weeping or catastrophic failure at critical pressure points.

This kit benefits engine builders, transmission tuners, and daily-driver enthusiasts who demand OEM-level reliability from aftermarket gauge installations. It is ideal for oil pressure, fuel pressure, and transmission pressure applications where mechanical gauges require a direct hardline connection from the source. Installation is straightforward: connect the female AN3 fittings to your gauge sender port and pressure source, secure the line with adhesive clips to prevent vibration rattle, and verify no contact with hot surfaces or rotating components. Compatible with all AutoMeter mechanical pressure gauges and any sensor or gauge port featuring AN3 female threads.