1/2in Npt Temp Adapter

The 1/2in NPT Temp Adapter (SKU: ATM2264) is a precision brass fitting engineered for mechanical temperature gauge installations where system compatibility demands a reliable thread conversion. This straight adapter bridges the gap between 5/8-18 inch female connections and 1/2 inch NPT male ports, making it an essential component for gauge mounting in automotive engine bays, industrial equipment, and diagnostic setups. Mechanics, technicians, and restoration specialists rely on this AutoMeter adapter to ensure secure, leak-free temperature probe installations across diverse gauge platforms.

Constructed from natural brass, this adapter delivers superior corrosion resistance and durability in high-temperature environments where steel fittings may degrade. The straight-through design eliminates pressure drops and measurement lag, preserving the accuracy of your mechanical temperature gauge readout. At just 0.11 lbs and compact dimensions (2.95 x 1.1 x 3.8 inches), it integrates seamlessly into engine compartments and control panels without adding bulk or requiring custom modifications. The 5/8-18 female thread accepts standard gauge sender connectors while the 1/2 NPT male outlet threads directly into engine block ports, cylinder head bosses, or intake manifold bosses.

This adapter is ideal for hot rod builders, classic car restorers, and anyone upgrading to quality AutoMeter gauge systems where OEM ports don't match aftermarket sender specifications. Installation requires only a wrench—thread the male NPT end into your engine port (hand-tight plus 1–2 turns; avoid over-torquing) and secure your gauge sender into the female 5/8-18 connection. It pairs perfectly with mechanical temperature gauges, oil pressure gauges, and other direct-read instruments that demand positive thread engagement and repeatable calibration. Whether you're diagnosing an overheating issue or building a custom instrument cluster, this NPT adapter ensures professional-grade reliability and measurement integrity.