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NACA Air Inlet Ducts

NACA ducts (also known as NASA ducts) are the most efficient, lowest-drag way to direct cooling air where it is needed. These ducts are molded from tough, high-impact black or clear plastic. Each duct has a wide flange for riveting or epoxying in place.

The Small duct is designed to accept our 2.5" ID duct hose. The Medium and Large sizes are designed to accept our 3" ID duct hose.

Note: These ducts are designed and built for racing use. They are not built for show cars. You can sand and paint them, but do not expect a "show-quality" finish out of the box.

ImagePart No.DescriptionPriceStock Status
Small NACA Duct (1 Outlet), for 2.5" Hose

3627-Color 

Small NACA Duct (1 Outlet), for 2.5" Hose

 
4.8
$33.99*In Stock
Medium NACA Duct (1 Outlet), for 3" Hose

3628-Color 

Medium NACA Duct (1 Outlet), for 3" Hose

 
4.7
$29.99
to
$32.99*
In Stock
Medium Rectangular NACA Duct (1 Outlet) For 3" Hose, Clear

3619 

Medium Rectangular NACA Duct (1 Outlet) For 3" Hose, Clear

$44.79In Stock
Large NACA Duct (2 Outlets), for 3" Hose

3629-Color 

Large NACA Duct (2 Outlets), for 3" Hose

 
5.0
$34.99
to
$38.99*
In Stock
In-Line Blower Fan, 135 CFM, 3" Diameter

3636-03 

In-Line Blower Fan, 135 CFM, 3" Diameter

 
5.0
$57.99In Stock

  * Quantity Pricing Available