AutoMeter Compression Fitting and Weld Fitting

Compatible with 3/16" Thermocouple and 1/8" NPT Threads

Part #: 5255

Overview

The AutoMeter 3/16in Compression to 1/8in NPT connector fitting and mating 1/8in NPT weld fitting are essential components for custom automotive sensor and gauge installations. Designed for performance enthusiasts and professional installers alike, these fittings provide a reliable and secure connection between thermocouples, pressure sensors, or other instrumentation with 3/16" compression fittings and standard 1/8" NPT threaded ports. Whether you're building a custom gauge setup, upgrading your vehicle's monitoring system, or performing precision sensor installations, these fittings ensure a solid, leak-free connection that maintains signal integrity under demanding conditions.

Constructed from high-quality high carbon steel, these fittings are engineered for durability and long-lasting performance. They are ideal for use in high-temperature, high-pressure environments commonly found in automotive applications. The precision manufacturing ensures a tight fit and consistent connection, helping you achieve accurate readings and reliable operation in your custom setups.

Key Features

AutoMeter's compression and weld fittings are crafted with the professional installer and serious enthusiast in mind. Key features include:

• High Carbon Steel Construction: Manufactured from durable high carbon steel, these fittings resist corrosion and withstand harsh engine bay conditions, ensuring longevity and reliable performance over time.
• Precise Machining: Engineered for a perfect fit, the fittings feature tight tolerances that prevent leaks and ensure consistent signal transmission for your sensors and gauges.
• Versatile Compatibility: The 3/16" compression fitting easily connects to thermocouples or sensors with compatible 3/16" fittings, while the 1/8" NPT weld fitting provides a secure threaded connection for various automotive components.
• Weld-In Design: The 1/8" NPT weld fitting is designed to be welded into custom panels or plumbing lines, offering a permanent, leak-proof connection for specialized applications.
• Ease of Installation: The compression fitting allows for quick, tool-free assembly, while the weld fitting provides a straightforward welding process for permanent installations.
• Application Flexibility: Suitable for a wide range of automotive projects, including custom gauge pods, turbo setups, oil pressure lines, and temperature sensors.

Construction & Design

The fittings are manufactured from high carbon steel, known for its strength and resistance to deformation under stress. The compression fitting features a precision-machined ferrule and nut that securely clamp onto the thermocouple or sensor line, providing a tight seal without damaging the delicate sensor components. The weld fitting is designed with a standard 1/8" NPT male thread, allowing it to be welded into custom manifolds, panels, or fluid lines, creating a permanent, leak-resistant connection. Both fittings are engineered to withstand the rigors of automotive environments, including vibration, heat, and exposure to fluids.

Performance & Reliability

These fittings are built to ensure a reliable connection in demanding conditions. The high-quality materials and precise manufacturing minimize the risk of leaks or signal loss, supporting accurate sensor readings and consistent gauge performance. Their robust construction makes them suitable for high-temperature applications, such as exhaust or turbo systems, where durability is critical.

Installation & Fitment

Installing these fittings is straightforward. The compression fitting can be easily assembled by hand or with basic tools, providing a secure connection to thermocouples or sensors with 3/16" fittings. The weld fitting requires welding into your custom plumbing or panel, which should be performed by a qualified technician to ensure proper sealing and safety. No additional adapters or complex modifications are necessary, making these fittings a versatile choice for custom automotive projects.

• Compression fitting for quick, tool-free assembly
• Weld-in fitting for permanent, leak-proof connections
• No cutting or threading required for the compression side
• Welding recommended for the weld fitting for optimal results

What's Included

• 1x 3/16" compression fitting
• 1x 1/8" NPT weld fitting
• Installation instructions (if applicable)

Ideal For

This fitting set is perfect for automotive enthusiasts and professional installers working on custom gauge installations, turbo setups, oil pressure lines, or temperature sensor integration. Its durable construction and versatile design make it suitable for both street and racing applications where reliable sensor connections are essential for optimal vehicle performance.

Emissions Note

These fittings are intended for use in non-emissions-critical applications. Please verify local regulations before installation if compliance is required for your vehicle or project.