2021 GMC Sierra 3500 HD Cold Air Intakes

Looking for aftermarket parts to modify or upgrade your 2021 GMC Sierra 3500 HD with cold air intakes? At Tunersports.com we carry a huge selection of the top name brand performance cold air intake parts and accessories for your Sierra 3500 HD.

Whether you have a 2021 GMC Sierra 3500 HD in AT4 to SLT trim we have you covered. We have 2 cold air intakes available to mod your Sierra 3500 HD. All parts have free shipping to the Continental US 48 States.

2021 Sierra 3500 HD Cold Air Intake Parts:

aFe PRO 10R Intake

IN STOCK 50-70056T Momentum’s unique filter-to-housing interface was built to feature the largest air filter possible. This 9” tall, pre-oiled 360-degree radial flow air filter features a 5-1/2” flange and our pre-oiled Pro 10R media with ten layers of progressively finer cotton gauze media for maximum performan... aFe Momentum HD Intake System w/ Pro 10R Filter 2020 GM Diesel Trucks 2500/3500 V8-6.6L (L5P) 2020-2021 GMC Sierra 3500 HD Base 2020-2024 GMC Sierra 3500 HD AT4 / Denali / SLE / SLT $359.70 SALE DetailsAdd to Cart

aFe Pro 5R Intake

Unique One-Piece High Quality Housing W/ Sight Window: The housing for this product is designed with precision, using heat-soak resistant material to eliminate the need for multiple components and to ensure the coldest possible air intake. A generous clear window allows for easy filter inspection w...

OUT OF STOCK 50-70055R Large Five Layer Performance Air Filter: This 360-degree radial flow air filter features our pre-oiled Pro 5R media with five layers of progressively finer cotton gauze media for maximum performance. Our Pro 5R media provides your engine with the largest amount of high-flowing air, usually resultin... aFe Momentum GT Pro 5R Cold Air Intake System GM Trucks 2500/3500HD 2020 V8-6.6L 2020-2021 GMC Sierra 3500 HD Base 2020-2024 GMC Sierra 3500 HD AT4 / Denali / SLE / SLT $359.70 SALE Details