# Kleinn Barbed Fitting - 1/8In M NPT to 3/8In OD Tubing

The Kleinn Model 53814R is a heavy-duty pneumatic hex reducer engineered to provide a secure, leak-free transition between different thread sizes within your high-pressure onboard air system. Featuring a premium, corrosion-resistant brass construction built to withstand demanding automotive environments, this universal component is designed with a 1/4" Female NPT threaded opening on one side and a 3/8" Male NPT threaded end on the other. This compact fitting allows you to easily adapt smaller lines, pressure switches, or accessories into standard 3/8" tank ports or manifolds, maximizing plumbing efficiency and ensuring a reliable air path for your air horns and onboard accessories.

-   For 3/8" O.D Air Line
-   Brass construction
-   1/8" M NPT

## Details

- **Price:** 32.09 CAD
- **Vendor:** Kleinn Air Horns
- **Type:** Fittings

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 32.09 CAD | In stock |

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/kleinn-barbed-fitting-1-8in-m-npt-to-3-8in-od-tubing)
> Updated: 2026-08-31