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  1. Peterbilt Tractor & Trailer Air Valve Knobs
    Square / Tractor
    Octagon / Trailer
  2. Peterbilt Red/Chrome Tractor & Trailer Air Valve Knobs
    Square / Tractor
    Octagon / Trailer
  3. Watchdawg Locking Tractor Parking Brake Air Valve Knob
    Thread On
    Pin On
    Chrome
    Aluminum
  4. Donkey and Cart Shaped Air Valve Knobs
    Donkey / Tractor
    Cart / Trailer
  5. Kenworth Colored Tractor & Trailer Air Valve Knobs
    Square / Tractor
    Octagon / Trailer
    Black Glitter
    Blue
    Red
    Black
  6. Tractor Air Valve Knob, Pin On or Thread On
    Thread On
    Pin On
  7. Kenworth Tractor & Trailer Air Valve Knobs
    Square / Tractor
    Octagon / Trailer
  8. Trailer Air Valve Knob, Pin On or Thread On
    Thread On
    Pin On
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Dash Knobs

Real truckers know what it takes to stand up to the grind of the road every day, and it starts with capable equipment. Every part must be built for performance and durability, from the most crucial components to the most detailed bells and whistles. Custom dash hardware is what you need for assured control, longevity and aesthetic appeal. Check out our wide selection of quality parking and air brake knobs and revitalize your rig today.

Trusted Brands, Trusted Quality 

There’s no shortage of companies cranking out replacement dashboard elements, so Iowa 80 offers an assortment of products from some true industry favorites. Find all the right upgrades for your essential controls today, whether it’s a truck parking brake knob or a new signal lever cover you’re after. Our lineup includes proven performers like Mack, Kenworth and Peterbilt, so you know you’re outfitting your dash with the very best products on offer. 

Convenient Customization 

No matter what type of look you’re going for, Iowa 80 has what you need to make it happen. Tailor your truck interior the way you want, and enjoy the benefit of easy installation with our inventory of pin-on and thread-on components. From chrome semi air brake knobs to colorful air valve controls, we’re your source for custom cab upgrades every time.

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