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800519 MV3 Dash Air Brake Control Valve for Freightliner Kenworth Peterbilt
$90.19
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$90.19
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Equipment Fitment
Review the equipment and model information below. Fitment can vary by serial number, production date, or machine configuration, so confirm your model and reference numbers before ordering.
Equipment / model
- Freightliner heavy-duty trucks (Cascadia, Century Class, Columbia, etc.)
- Kenworth heavy-duty trucks (T680, T800, W900, etc.)
- Peterbilt heavy-duty trucks (389, 579, etc.)
- Other commercial vehicles with OEM 800519/MV-3 dash valve layout
Product Overview
The 800519 MV-3 Dash Air Brake Control Valve is a pneumatic dash valve that actuates the tractor parking brakes and controls trailer air supply in commercial vehicles. This direct-fit replacement matches OEM specifications for Freightliner, Kenworth, and Peterbilt trucks, restoring correct air brake control. Heavy-duty construction ensures long service life under demanding road conditions.
Key Features & Performance
- Direct OEM-style replacement for part numbers 800519 and MV-3
- Modulates parking brake and trailer air supply from a single dash control
- Rugged die-cast metal housing resists corrosion and vibration
- Smooth, precise pneumatic actuation for reliable daily use
- Pre-set port configuration simplifies installation
Common Uses
- Engaging and releasing tractor parking brakes
- Controlling trailer air supply for air-ride and brake systems
- Replacing a faulty or leaking OEM dash air brake valve
- Heavy-duty truck repair and fleet maintenance
Technical Specifications
- Part Number(s): 800519, MV-3
- Valve Type: MV-3 Dash Air Brake Control Valve
- Function: Parking brake and trailer air supply control
- Mounting Style: Dash-mounted push-pull knob
- Material: Heavy-duty metal and brass components
Frequently Asked Questions
Q: What symptoms indicate I need a new MV-3 dash valve? A: Air leaks from the dash valve, a knob that won’t stay pushed in, or inability to hold parking brake pressure typically signal a failing valve and require replacement.
Q: Will this valve fit all Freightliner, Kenworth, and Peterbilt models? A: It fits models originally equipped with the MV-3 dash valve and OEM part numbers 800519; always compare your existing valve configuration and part number before ordering.
Product appearance and specifications may vary slightly by batch. Compatibility may vary by serial number. Verify fitment before purchase.