3-Pin 54200308 Delphi Waterproof 2.8mm Female Connector – Buick Regal Sensor Harness

Direct-fit replacement for Delphi OEM part number 54200308, a 3-pin waterproof 2.8mm Metri-Pack 280 connector used in Buick Regal and other GM platform sensor harness applications. Delphi (now Aptiv) is the OEM supplier for the majority of GM wiring harness connectors – the 54200308 is a Delphi-specific part number for a standard Metri-Pack 280 series housing.

Key Specifications

• OEM Part Number: 54200308 (Delphi / Aptiv)
• Pin Count: 3
• Gender: Female (with wire)
• Terminal Pitch: 2.8mm (Metri-Pack 280 series)
• Wire Gauge: 18 AWG (0.5 mm²)
• Wire Length: 5.5 inches (140 mm)
• Waterproof Rating: IP68
• Housing Material: PA66 glass-filled nylon
• Terminal Material: Copper alloy, tin-plated
• Current Rating: Up to 13A per pin

Compatible Vehicles & Applications

• Buick Regal: 2.0T and 2.4L engine sensor harnesses (2011–2017)
• Buick LaCrosse: Engine management sensor connectors
• Chevrolet Malibu: Shared GM Epsilon II platform sensor harness
• Opel/Vauxhall Insignia: European platform equivalent
• Applications: Oxygen sensor, MAP sensor, fuel pressure sensor, IAT sensor harness

Common Fault Codes

• P0131 / P0151 – O2 Sensor Circuit Low Voltage (Bank 1/2, Sensor 1)
• P0106–P0108 – MAP Sensor Circuit Range/Performance
• P0171 / P0172 – System Lean/Rich (often caused by O2 or MAP connector fault)

Frequently Asked Questions

Q: Is 54200308 a Delphi or GM part number?
A: 54200308 is a Delphi (now Aptiv) manufacturer part number. GM uses a different catalog number for the same connector in their service parts system. Cross-reference with your vehicle's service manual to find the GM equivalent if ordering from a GM dealer.

Q: What is the difference between Delphi Metri-Pack 280 and standard Metri-Pack 280?
A: Functionally identical. Delphi uses their own part numbering system (54200308) for what is physically the same 2.8mm Metri-Pack 280 housing. The terminals and wire seals are interchangeable with other Metri-Pack 280 series connectors.

Q: What crimping tool is needed?
A: Use the Kent-Moore J-38125-6 or Delphi 12085271 ratchet crimper for 2.8mm Metri-Pack 280 terminals.

Package Contents

1 × 3-Pin Female Connector (54200308) with 18 AWG wire and terminal insert