1/8in Npt to M12x1.0 Metric Adapter

The AutoMeter 1/8in NPT to M12x1.0 Metric Adapter is a precision fitting designed for technicians and enthusiasts who need to integrate modern metric sensor systems into vehicles with traditional NPT (National Pipe Thread) ports. This adapter is essential for bridging older gauge and pressure-monitoring installations with contemporary M12x1.0 metric instrumentation, making it a valuable tool for engine bay modifications and custom gauge clusters.

Constructed from precision-machined brass, the adapter features a 1/8in NPT male thread on one end and an M12x1.0 metric female thread on the other. This design ensures reliable, leak-free connections suitable for fuel, oil, and coolant applications. The tapered NPT thread creates a mechanical seal without the need for additional sealant tape in many cases, although using a thread-seal compound is recommended for maximum reliability.

Mechanics and engine builders will find this adapter particularly beneficial when installing modern digital pressure transducers or retrofitting classic engine management systems. Its compact size and lightweight design minimize installation complexity while maintaining structural integrity under thermal cycling and mechanical stress.