Standard Ignition S-938 Oxygen Sensor Connector

Oxygen Sensor Connector for GM Applications

Standard Ignition S-938 is a female oxygen sensor connector pigtail assembly built for electrical repair work where the original connector has failed, melted, or become unreliable. It uses high-grade materials to support strong conductivity and a secure connection for oxygen sensor circuits on a wide range of Chevrolet, GMC, Buick, Cadillac, Saturn, and Hummer vehicles.

Use Standard Ignition S-938 when servicing rear, downstream, or upstream oxygen sensor wiring on applications such as the Chevrolet Equinox, GMC Terrain, and Chevrolet Silverado 1500. The 17-inch harness length and 4-blade terminal design make it a direct-fit style repair connector for common GM sensor harness repairs.

Key Features

• Female oxygen sensor connector with pigtail assembly
• 17-inch harness length for repair and replacement routing
• 4 male blade terminals with 4-wire configuration
• Built with high-grade materials for consistent conductivity
• Designed for oxygen sensor connector repair on GM vehicles
• Standard Ignition S-938 cross-references to 1P1690 and 57-5471 for the same application

Detailed Description

Standard Ignition S-938 is engineered for technicians replacing damaged oxygen sensor connectors on vehicles that rely on a 4-blade terminal interface. The connector is commonly used on rear and downstream sensor locations, and it also appears in upstream applications on select models. This part number, S-938, is listed across many GM platforms including Chevrolet Equinox, GMC Terrain, Chevrolet Silverado 1500, and GMC Sierra 1500, making it a practical repair solution for oxygen sensor wiring issues.

Standard Ignition focuses on pigtails and sockets for electrical repairs, using materials selected to maintain peak conductivity and dependable terminal contact. That makes this connector a solid choice when the factory plug is heat-damaged, corroded, or no longer locking securely to the sensor.

What It Is Used For

• Repairing a melted or broken oxygen sensor connector
• Restoring signal continuity in rear or downstream sensor wiring
• Replacing corroded terminals that cause intermittent sensor readings
• Fixing damaged harness ends on GM exhaust sensor circuits
• Addressing connector failure on Chevrolet, GMC, Buick, Cadillac, Saturn, and Hummer applications

Installation Notes and Tips

Verify connector style, terminal count, and sensor location before installation. This part uses a female connector body with 4 male blade terminals, so match it to the vehicle-side harness and the oxygen sensor plug before cutting or splicing. Confirm the application by year, make, model, and position, especially on rear, downstream, and upstream sensor locations. For vehicles such as the Chevrolet Equinox and GMC Terrain, check the rear sensor routing and harness length before final installation.

Quality Assurance

Standard Ignition designs its pigtails and sockets with technician-focused electrical repair needs in mind, using high-grade materials to support reliable connections and consistent conductivity. S-938 is built as a repair connector for failed original equipment oxygen sensor plugs.