Glow Plug, LZ0 2023-2026

ACDelco 72G / GM 55506604 Glow Plug | 2023–2026 3.0L LZ0 Duramax

Maintain reliable cold-weather starting with the ACDelco 72G Glow Plug for 2023–2026 GM 3.0L LZ0 Duramax engines. This genuine GM replacement glow plug is designed to provide the heat needed for proper diesel combustion during cold starts, helping reduce hard-start conditions caused by worn or failed glow plugs.

Engineered and tested to GM original equipment standards, this direct-fit replacement provides dependable performance and factory-quality compatibility.

Key Features

• Genuine GM / ACDelco replacement glow plug
• Direct-fit OEM replacement
• Helps improve cold-weather starting performance
• Designed and tested to GM original equipment standards
• Sold individually; six glow plugs required per engine

Fitment

2023–2026 Chevrolet Silverado 1500 and GMC Sierra 1500 equipped with the 3.0L LZ0 Duramax engine.

Important Fitment & Installation Notes

• Glow plug design varies by vehicle production date and electrical architecture.
• Confirm first-design versus second-design compatibility before installation.
• Clean the glow plug bore using the appropriate tool before installing a replacement ceramic glow plug.
• Not interchangeable with glow plugs used in LM2 Duramax applications.