K066311 Genuine Bendix TP-5 Tractor Protection Brake Valve

Product Overview

The K066311 is a genuine Bendix TP-5 tractor protection brake valve specified for Kenworth and Peterbilt semi-truck air brake systems equipped for trailer operation. This pneumatic valve helps isolate the tractor's air supply from the trailer braking circuit when trailer air pressure is lost or the trailer becomes disconnected, protecting the tractor's available compressed air supply.

Product Features

The K066311 Bendix TP-5 tractor protection brake valve operates within the tractor-to-trailer pneumatic brake connection, providing air circuit protection during trailer pressure loss or separation.

• Isolates tractor air brake supply from the trailer circuit when required
• Responds to trailer air pressure loss within the pneumatic braking arrangement
• Helps retain compressed air within the tractor's own braking system
• Supports protective operation during unexpected trailer air line disconnection events
• Functions as part of the designated tractor and trailer brake interface
• Uses the TP-5 valve configuration specified for compatible Kenworth and Peterbilt applications

General Specifications

Installation Notes

The K066311 should be installed after identifying the existing TP-5 valve arrangement, inspecting the tractor-to-trailer air lines, and confirming that the valve's pneumatic connections correspond to the vehicle's brake circuit layout. Following installation, restore system air pressure, inspect the connected lines and fittings for leakage, and perform the prescribed tractor protection and trailer brake circuit tests before returning the truck to operation.

Always verify the original valve part number, TP-5 configuration, pneumatic port arrangement, tractor air brake circuit design, and Kenworth or Peterbilt application before installation.