Weld In Fitting with Metric Port for GM Sensor

LS Swap GM A/C Pressure Sensor Weld-In Fitting – Aluminum

For builders utilizing aluminum hard lines in their LS conversion, this Aluminum Weld-In Fitting offers a clean, professional way to integrate a GM A/C pressure sensor. This fitting allows your ECM or PCM to monitor system head pressure, providing the data needed to automatically bump the idle and trigger the electric cooling fans when the A/C is operational.

Proper sensor integration is the key to preventing “RPM hunting” or stalling when the A/C compressor cycles, ensuring your swap maintains OEM-level driveability and cooling efficiency.

Technical Specifications

• Material: 6061 Aluminum (Designed for easy welding to aluminum A/C hard lines).

• Installation Type: Weld-in.

• System Location: High-Pressure (Discharge) Hard Line.

• Compatibility: Threaded specifically for the standard GM A/C Pressure Sensor (Metric).

• Function: Enables ECM-controlled fan triggers and idle compensation.

Installation Requirements

This fitting must be TIG welded onto the High Side (Discharge) line of your A/C system. This is the line that runs from the compressor to the condenser. Once welded, the GM pressure sensor threads directly into this port, allowing the PCM to manage cooling fans based on actual system pressure rather than a simple on/off switch.

Related LS A/C Solutions

If you require a different material or a complete kit, please see our other integration options below:

• Weld-In Kit (Fitting & Sensor): ACK-001 – Includes this aluminum fitting and the matching GM sensor.

• Crimp-In Kit (Fitting & Sensor): ACK-002 – Designed for #8 Standard Barrier A/C hoses.

• Binary Safety Switch: ACS-002 – Standalone high/low pressure safety cutoff switch.

• Crimp-In Binary Switch Fitting: ACF-006 – Crimp-in fitting featuring a 7/16″ port for binary switches.