#4 Male to 1/8in NPT Aluminum Gauge Fitting

The #4 Male to 1/8in NPT Aluminum Gauge Fitting from XRP-XTREME RACING PROD. is a crucial adapter for performance and stock engine monitoring setups. It's designed for those who are installing aftermarket gauges or upgrading factory fuel pressure or oil pressure systems. This fitting effectively connects your gauge sender to the engine block or fuel rail, ensuring accurate pressure readings.

Constructed from durable aluminum, this gauge fitting features a #4 SAE male port (JIC straight thread) on one end and a 1/8-inch NPT male port on the other, facilitating seamless integration between different gauge systems. The aluminum material keeps the weight minimal at just 0.04 lbs while providing the necessary rigidity for pressurized fuel and oil lines. The tapered NPT threads create a mechanical seal, although many professionals still recommend using PTFE tape for added security in critical applications.

This adapter is particularly beneficial for builders upgrading to digital or analog gauge clusters or for those needing auxiliary pressure monitoring in race applications. Its compact dimensions (2.7 x 0.95 x 3.6 in) make it easy to install in tight engine bays, especially in modern turbocharged or supercharged setups. Common applications include turbo fuel pressure and oil pressure measurement, making it an essential tool for automotive enthusiasts.