Dewhel Aluminum M16x1.5 to 1/8 NPT LS Engine Swap Oil Pressure Sensor Adapter LS1 LSX LS3 Gauge For GM LS1 LSX LS3 Manufactured from high quality aluminum Male M16-1.5 and Female 1/8" NPT Fits: All GM LS Series Engines In package -1 adapter & 1 sealing washer LS Swap Gauge Sensor Adapter