Professional 2-Pin ECT Connector for GM LS & Standalone EFI Applications

This GM Delphi Aptiv Gen 3 2-Pin Connector Kit is designed specifically for coolant temperature (ECT) sensor applications across GM LS platforms and aftermarket standalone EFI systems.

Featuring the purple primary lock with single-side keying and an integrated secondary locking mechanism, this connector provides secure terminal retention and reliable sealing in high-temperature engine environments.

Commonly referred to as an AEM-style or Delphi Aptiv Gen 3 connector, this plug is trusted across OEM and motorsport wiring platforms.

Common Applications

This 2-pin Gen 3 connector is widely used in:

• GM LS coolant temperature sensors
• Standalone ECU coolant temp wiring
• Aftermarket ECT sensors
• Haltech coolant temp inputs
• FuelTech coolant temp integration
• Custom engine harness builds

For professional sensor signal routing in standalone systems, we recommend using MIL-DTL-27500 Spec 55 shielded cable where appropriate in high-interference environments.

Connector Specifications

• Delphi Aptiv Gen 3 style housing
• Purple primary lock (single-side keyway)
• Includes secondary locking mechanism
• 22–20 AWG open barrel terminals
• Motorsport-grade sealing design
• High-temperature resistant construction

Each kit includes:

• 1x 2-Pin Connector Housing
• 1x Secondary Lock
• 2x 22–20 AWG Terminals
• 2x Wire Seals

Everything required for professional harness integration.

Why Delphi Aptiv Gen 3 Connectors Are the Standard

Gen 3 Aptiv connectors are commonly used in:

• LS engine harness builds
• Standalone ECU installations
• Professional motorsport wiring
• Sensor replacement and harness repair

Their compact, sealed design and positive locking system make them ideal for harsh engine bay environments where vibration, heat, and moisture are present.

For complete standalone integration, explore our Standalone ECU Connector Kits and full EFI wiring solutions.

Built for Professional EFI Wiring

At VTEC Innovations, we supply connector kits that meet the standards required for serious performance builds. These are designed for proper crimping, secure retention, and long-term durability.

Built for EFI.
Built for boost.
Built for reliability.