EVIL ENERGY 1/8 NPT Oil Pressure Sensor Tee Adapter, Silver — 304 Stainless, Compact Inline Sensor Port

EVIL ENERGY's 1/8 NPT oil pressure sensor tee adapter is a 304 stainless steel fitting that lets you add an inline oil pressure or temperature sensor without cutting hoses. This compact tee adapter converts an existing 1/8-27 NPT male or female port into a three-way connection so you can attach a gauge or sensor while keeping the original line intact. Machined from corrosion-resistant 304 stainless steel and using tapered NPT threads, the adapter is built to withstand engine bay environments and provide reliable, leak-minimized connections when installed with proper thread sealant.

How does this adapter let me add a sensor without modifying my system?

The tee has a male and two female 1/8-27 NPT ports (inlet male, outlet female, and a center female tap) so you can thread it into an existing port and attach a sensor to the center tap. That preserves the original connection while giving you a dedicated sensor port.

• Inlet thread: 1/8-27 NPT male for existing ports
• Two female 1/8-27 NPT outlets, including center tap for sensors
• Tapered NPT threads form a press-fit seal when used with PTFE tape
• No cutting or brazing required for sensor installation

Is the material suitable for harsh engine environments?

The adapter is made from 304 stainless steel, chosen for corrosion resistance and general durability in oil and engine compartments. It resists rust and chemical exposure better than standard plated brass, extending service life under typical automotive conditions.

• 304 stainless construction for corrosion resistance
• Machined finish for accurate thread engagement
• Suitable for oil and moderate-temperature environments
• Compact size reduces exposure to debris and impact

Will the threads seal reliably, and how should I install it?

Threads are 1/8-27 NPT tapered with a 60-degree angle to create a pressure-tight joint when installed correctly. For the best leak prevention, apply PTFE (thread) tape or an appropriate pipe sealant to the male threads before assembly and torque to manufacturer guidance.

• Tapered NPT threads provide a mechanical seal as they seat
• Use PTFE tape or pipe thread sealant for leak-free joins
• Hand-start threads to avoid cross-threading, then tighten with wrench
• Inspect after initial run to confirm no seepage at joints

Which gauges and sensors are compatible with this adapter?

Any gauge or sensor designed for a 1/8-27 NPT female port will thread into the center tap of this adapter. That makes it compatible with most aftermarket oil pressure and temperature switches, sending units, and mechanical gauge fittings that use the common 1/8 NPT size.

• Works with standard 1/8-27 NPT oil pressure sensors
• Accepts most mechanical or electrical temperature senders with 1/8 NPT threads
• Allows parallel installation of sensor and factory port connection
• Ideal for retrofits and performance gauge installations

This stainless-steel tee adapter is intended for installers, home mechanics, and shop technicians who need a compact, durable way to add a sensor without disturbing the original plumbing. It’s particularly useful for vehicle owners adding aftermarket gauges, builders fabricating custom engine setups, and service professionals who prefer mechanical, threaded connections over push-fit alternatives. Follow standard safety and installation practices, use appropriate sealant, and verify compatibility with your sensor or gauge to ensure reliable operation.

FAQ

Q: What thread sizes does this tee adapter use?

A: All ports are 1/8-27 NPT: one male inlet and two female outlets including the center tap.

Q: Do I need sealant to prevent leaks?

A: Yes — apply PTFE tape or a pipe thread sealant to the NPT male threads for a reliable, leak-free seal.