The ACDelco / GM 12616850 is the OE engine oil pan drain plug seal (O-ring / gasket), listed by GM for many GM vehicles including 2011–2025 Chevrolet Silverado and GMC Sierra 2500 HD / 3500 HD with the 6.6L Duramax.

Features & Benefits

• OE oil pan drain plug seal / gasket, GM P/N 12616850
• GM notes it is also included with the drain plug and oil pan assemblies
• Genuine GM / ACDelco OE part, designed, engineered and tested to GM standards and backed by General Motors

Application

• Chevrolet Silverado 2500 HD / 3500 HD and GMC Sierra 2500 HD / 3500 HD (2011–2025), incl. 6.6L Duramax diesel
• Also listed for many other GM cars, trucks and SUVs

Always verify fitment by VIN or by matching the GM/ACDelco part number on your original part before ordering.

Cross-Reference / OE Numbers

• GM: 12616850