








🔧 Upgrade your rig’s style and durability with a knob that works as hard as you do!
The United Pacific 23399 Heavy-Duty Aluminum Gun Cylinder Air Valve Knob is a precision-engineered, screw-on valve knob made from lightweight yet durable aluminum. Finished with a triple chrome plating, it offers superior corrosion resistance and a polished look. Designed to fit major truck brands like Freightliner, Kenworth, and Peterbilt, it features 1.91-inch NPT connections for easy installation and reliable performance. This single unit combines rugged functionality with sleek aesthetics, backed by United Pacific’s 30+ years of automotive expertise.










| Material | Aluminum |
| Brand | United Pacific |
| Item dimensions L x W x H | 5.5 x 3.55 x 2.15 inches |
| Exterior Finish | Machined |
| Inlet Connection Size | 1.91 Inches |
| Inlet Connection Type | NPT |
| Outlet Connection Type | NPT |
| Number of Ports | 1 |
| Outlet Connection Size | 1.91 Inches |
| Global Trade Identification Number | 00710270233991 |
| Manufacturer | United Pacific |
| UPC | 710270233991 |
| Model | 23399 |
| Item Weight | 9 ounces |
| Product Dimensions | 5.5 x 3.55 x 2.15 inches |
| Item model number | 23399 |
| Manufacturer Part Number | 23399 |
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