# Kleinn HK7 Complete Set of Fittings

Equip your vehicle's onboard air installation with the premium Kleinn FIT7 complete plumbing and fitting kit, engineered as a direct-fit component package for the HK7 ProBlaster train horn system or for universal high-pressure custom configurations. Built for maximum pneumatic reliability, this comprehensive hardware kit includes a complete set of heavy-duty 1/4-inch NPT brass fittings to guarantee a completely leak-free setup under extreme pressure. To streamline your airline routing and ensure safe operation, the high-performance kit comes fully loaded with a part number 2151 145 PSI automatic pressure switch, a part number 52175 175 PSI safety relief valve, a part number 52835 air tank drain valve, a part number 50040 hex plug, and a 51414L compression elbow fitting. Designed for a clean, professional finish right out of the box, this ultimate upgrade package also includes a part number 318-BK black momentary horn push-button switch alongside a vial of Kleinn's exclusive Juice-1 liquid thread sealant, giving you everything needed to successfully complete or service your air horn system.

-   52835 Tank Drain Pet-cock butterfly valve
-   51414L Elbow 1/4" Compression fitting
-   Model 318BK Horn Push Button
-   Model 2151 Pressure Switch
-   Model 52175 Safety Valve
-   Juice-1 Thread Sealant
-   50040 Hex Plug

## Details

- **Price:** 117.75 CAD
- **Vendor:** Kleinn Air Horns
- **Type:** Fittings

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 117.75 CAD | In stock |

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/kleinn-hk7-complete-set-of-fittings)
> Updated: 2026-08-31