Description

Overview

The D-2 Air Governor Valve delivers reliable control of compressor cut-in and cut-out pressures in heavy vehicle air brake systems. It suits common trailer and truck installations, and it helps maintain stable reservoir pressure so braking performance remains consistent on the road.

Features

• Adjustable pressure range 105–125 psi for easy setup in workshops
• Three 1/8″ NPT reservoir ports and three 1/8″ NPT unloader ports for flexible plumbing
• Clearly marked ports and supplied gasket to speed installation
• Proven D-2 pattern widely used across transport fleets

Specifications and Materials

Part number: AB8313.
Model: D-2 governor valve. Ports: 1/8″ NPT. Pressure range: adjustable 105–125 psi. Typical function: controls compressor unloading at cut-out and reactivates at cut-in to maintain system pressure.
For technical background and service detail, see the Bendix D-2 governor manufacturer technical guide.

Compatibility and Fitment

This cross-reference listing means this valve is a suitable replacement for the part numbers and applications shown. Some changes in air line plumbing may be required. 284358, 284358R, 102178, 102178X, 108818, 227435, 275491, 275491X, 275707, 275707X, 18537, KN18500X, KN18530, KN18537, VHD18537.

Compliance and Safety

Install to the vehicle manufacturer’s recommendations and pressure-test after fitting. Ensure the governor activates within the specified pressure window. Consequently, braking performance remains predictable under load.

Trailer Applications

Suitable for trailers and prime movers using D-2 pattern air governors. It is commonly chosen during compressor or air system overhauls, and it integrates smoothly with standard unloader mechanisms on heavy trailers.

Cross-reference and Suitability

This part cross-references to or suits the following equivalent part numbers and compatible alternatives:

Why Choose ICS Trailers

We focus on dependable parts for Australian fleets. Moreover, our team understands trailer air systems and can assist with practical setup advice. For related brake components and fittings, browse our curated range. Browse Air Brake Parts at ICS Trailers