2020-2026 GMC Sierra 3500HD Air Filters

These air filters fit 2020-2026 GMC Sierra 3500HD trucks, including 6.6L Duramax diesel and 6.6L L8T gas engines. Choose from K&N reusable oiled cotton, AFE Pro Dry S synthetic, and S&B high-flow drop-in replacements engineered for the factory airbox.

Will a high-flow air filter void my Sierra 3500HD warranty or trigger a check engine light? No. Drop-in replacements use the OEM airbox and MAF housing, so they bolt in without tuning, codes, or warranty issues under the Magnuson-Moss Act.

Verified fitment by VIN year and engine, no guesswork at checkout.