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.
| Image | Part No. | Description | Price | Stock Status |
|---|---|---|---|---|
 | 3627-Color | Small NACA Duct (1 Outlet), for 2.5" Hose | $33.99* | In Stock |
 | 3628-Color | Medium NACA Duct (1 Outlet), for 3" Hose | $29.99 to $32.99* | In Stock |
 | 3619 | $44.79 | In Stock | |
 | 3629-Color | Large NACA Duct (2 Outlets), for 3" Hose | $34.99 to $38.99* | In Stock |
 | 3636-03 | In-Line Blower Fan, 135 CFM, 3" Diameter | $57.99 | In Stock |
* Quantity Pricing Available
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Brake Cooling Inlet Ducts & Hose |