The ACDelco A3257C is the OE engine air filter for 2017–2019 Chevrolet Silverado and GMC Sierra 2500 HD / 3500 HD with the 6.6L Duramax diesel.

Features & Benefits

• OE engine air filter, ACDelco / GM P/N A3257C
• GM notes it is also included with the air cleaner assembly
• 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 with 6.6L Duramax diesel (2017–2019)

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

Cross-Reference / OE Numbers

• ACDelco / GM: A3257C