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Bendix  |  SKU: 800588BXW

800588BXW | Genuine Bendix® Tractor Protection Brake Valve TP-5

$54500
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Description:
A Tractor Protection Valve (TPV) 800588BXW is a critical air brake component found on semi-trucks (tractors) that tow trailers. Its main purpose is to protect the tractor’s air brake system in case the trailer loses air pressure or disconnects unexpectedly. Tractor Protection Brake Valve TP-5

Part Number: 800588BXW
Condition: New
Manufacture/Brand: Bendix

Fits 800588BXW For Navistar, International

Purposeof using 800588BXW:

When you're driving a truck with a trailer:

  • The tractor supplies air to the trailer's brakes through gladhand connectors (red = emergency, blue = service).

  • If the trailer disconnects, or loses pressure, air would otherwise escape from the tractor — disabling brakes on both tractor and trailer.

The Tractor Protection Valve:

  • Seals off the tractor’s air system to prevent air loss

  • Automatically applies trailer emergency brakes if air pressure drops too low

  • Allows control over trailer brake supply and emergency lines


Signs of a Bad Tractor Protection Brake Valve 800588BXW:

Tractor loses air when trailer disconnects

Trailer brakes don’t engage during emergency
Air constantly leaks from gladhand connections
Trailer supply knob doesn’t pop out on pressure loss
Fails leak-down or build-up test during DOT inspection


About the Manufacturer – Bendix:

Bendix is a leading manufacturer of air brake systems, safety technologies, and control components for commercial trucks, buses, and trailers. Known for innovations in braking, stability, and traction control, Bendix supplies OEM and aftermarket parts across North America. It is a subsidiary of Knorr-Bremse, a global leader in braking systems.

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