8167476 | Genuine OEM Volvo D-2 Air Brake Governor Valve

The 8167476 Genuine OEM Volvo D-2 Air Brake Governor Valve is a pneumatic pressure control component designed for heavy-duty truck compressed air systems. This D-2 governor controls the air compressor's cut-in and cut-out operation to help maintain the required air pressure for the vehicle's air brake system. It is listed for Volvo applications, with compatibility for other vehicles requiring verification.

PRODUCT INFORMATION

• Part Number: 8167476

• Brand: Volvo

• Condition: Verify actual item condition

• Component: D-2 Air Brake Governor Valve

• Fuel Type: Not applicable

• Engine Applications: Not engine-specific

• Governor Type: D-2

• Operating Pressure: 110–130 PSI

• Port Thread Size: 1/8-27 NPT

• Adjustability: Adjustable

• System: Pneumatic Air Brake / Air Compressor Control System

APPLICATIONS

The 8167476 D-2 Air Brake Governor Valve is intended for compatible heavy-duty truck pneumatic braking systems that use a D-2 type compressor governor.

The part is listed under Volvo and is also associated with Mack truck applications. Exact vehicle models, production years, and installation configurations must be verified using the original part number and vehicle information.

FUNCTION

The D-2 air brake governor monitors compressed air system pressure and controls the compressor's unloading mechanism.

When system pressure reaches the specified cut-out setting, the governor signals the compressor to stop delivering compressed air. As pressure decreases to the cut-in setting, the governor allows the compressor to resume supplying air.

This pressure regulation helps maintain an appropriate air supply for the truck's braking system and prevents unnecessary compressor operation.

A worn, damaged, or failing D-2 Air Brake Governor Valve may cause symptoms such as:

• Air pressure rising above the intended cut-out setting

• Compressor failing to resume operation at the proper cut-in pressure

• Excessive compressor cycling

• Continuous compressor operation

• Inconsistent air system pressure

• Air leakage from the governor or its connections

WHY REPLACE A D-2 AIR BRAKE GOVERNOR VALVE?

A defective air brake governor can interfere with normal compressor operation and prevent the pneumatic braking system from maintaining the correct operating pressure.

Replacing a faulty governor with the correctly matched 8167476 D-2 Air Brake Governor Valve helps restore proper compressor cut-in and cut-out control, supports consistent system pressure, and reduces unnecessary strain on air system components.

Air brake system faults should be diagnosed and repaired by qualified service personnel.

FITMENT INFORMATION

Before ordering 8167476 Genuine OEM Volvo D-2 Air Brake Governor Valve, verify the original part number, VIN, vehicle make and model, engine information, and pneumatic brake system configuration.

Confirm the required operating pressure range, port thread size, mounting arrangement, and governor configuration against the original component.

Always verify the part number, vehicle VIN, and system configuration before ordering.

If you are unsure whether this part is correct for your vehicle, please contact us with your VIN and original part number. We are happy to help verify compatibility before purchase.

GENUINE VOLVO PART

Part Number: 8167476

The 8167476 D-2 Air Brake Governor Valve is identified in parts catalogs as a Volvo air brake compressor governor for compatible heavy-duty pneumatic systems. Verify the genuine OEM markings, actual item condition, and vehicle compatibility before installation.