800257 MV-3 Dash Air Brake Control Valve For Bendix Freightliner Peterbilt Keene
800257 MV-3 Dash Air Brake Control Valve For Bendix Freightliner Peterbilt Keene
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MV-3 Dash Air Brake Control Valve for Bendix, Freightliner, Peterbilt, Keene
Dash-mounted push-pull air brake control valve for Bendix systems on Freightliner, Peterbilt, and Keene trucks, replacing part number 800257.
Overview
The MV-3 dash air brake control valve lets drivers apply and release parking and emergency spring brakes with a simple push-pull action. Designed for heavy-duty trucks with Bendix air systems, this MV-3 dash air brake control valve meets the same fit and function as the factory unit. It is the go-to replacement for fleets and owner-operators of Freightliner, Peterbilt, and Keene trucks when the original valve becomes sticky or fails.
Built For Performance
- Push-to-apply, pull-to-release knob with a positive detent for clear engagement
- Auto-release feature vents spring brake pressure when the knob is pushed
- Corrosion-resistant aluminum body with steel pushrod for long service life
- Standard mounting pattern matches factory dash cutouts
- Pre-lubricated O-rings for smooth operation down to -40°F
Fits These Machines
- for Bendix air brake systems
- for Freightliner trucks
- for Peterbilt commercial vehicles
- for Keene heavy-duty trucks
On-The-Job Use
- Setting the parking brakes during a delivery stop
- Releasing spring brakes after an emergency brake application
- Performing daily brake system leak-down tests
- Replacing a worn valve that causes air leaks or inconsistent brake holding
- Retrofitting older trucks with a modern, serviceable MV-3 unit
Specs At A Glance
| Part Number(s) | 800257 |
| Type | MV-3 push-pull |
Good To Know
Q: Is this an original Bendix part? A: No, it is a high-quality aftermarket replacement for Bendix MV-3 valves, built to identical specifications.
Q: Will this fit a 2018 Freightliner Cascadia? A: Yes, it is compatible with Freightliner Cascadia models equipped with Bendix air systems from 2010 to present.
Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.
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