Oil Pressure Sensor Adapter Male M16x1.5 to Female 1/8 NPT for GM LS Engine Swap

Oil Pressure Sensor Adapter Male M16x1.5 to Female 1/8 NPT for GM LS Engine Swap

This oil pressure sensor adapter converts a male M16x1.5 port to a female 1/8 NPT thread, letting a standard 1/8 NPT oil pressure sender or gauge line mount to an LS engine block port.

Overview

The oil pressure sensor adapter male M16x1.5 to female 1/8 NPT is built for GM LS engine swaps where the block oil pressure port takes an M16x1.5 fitting but the sender or gauge line uses 1/8 NPT. This oil pressure sensor adapter threads into the block port on the male side and provides a female 1/8 NPT opening on the other, so aftermarket senders and mechanical gauge lines fit without drilling or retapping. It is aimed at engine swappers, builders, and anyone plumbing oil pressure instrumentation on an LS platform.

Built For Performance

• Male M16x1.5 thread on the block side and female 1/8 NPT on the sender side
• Steel construction suited to oil pressure and temperature exposure
• Threaded directly into the LS oil pressure port without machine work
• Compact body keeps the sender clear of the intake and firewall
• Works with common 1/8 NPT oil pressure senders, gauges, and lines

Fits These Machines

• for GM LS series engines with an M16x1.5 oil pressure port
• for GM LS engine swap builds using 1/8 NPT oil pressure senders

On-The-Job Use

• Plumbing aftermarket oil pressure gauges on LS swap projects
• Adapting the block port when the factory sender is not reused
• Installing mechanical or electric oil pressure senders on rebuilt LS engines
• Routing gauge lines on street, off-road, and track builds

Specs At A Glance

Good To Know

Q: Will this adapter work for an LS swap with an aftermarket oil pressure gauge? A: Yes, the male M16x1.5 side threads into the block oil pressure port and the female 1/8 NPT side accepts a standard sender or gauge line. Confirm your sender thread is 1/8 NPT before installing.

Q: Does the adapter need thread sealant? A: Use a sealant rated for oil and heat on the male threads, keeping it clear of the sensor opening. Thread sealant on tapered NPT threads helps prevent weeping at the joint.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.