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Meritor · Air System
275491X
In stock · ships from Knoxville
The D-2 governor is an air brake system component that tells the compressor when to start and stop building pressure.
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Standard D-2 type governor used on many Class 8 tractors and trailers. Verify port size (1/8 in.) and pressure settings (100/120 psi) for your application.
Part data verified against 4 catalog sources
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It maintains the system air pressure between a set cut-in (around 100 psi) and cut-out (around 120 psi) range. When the governor fails or sticks, the compressor may not cycle properly, leading to low or excessive air pressure and potential braking issues. Replacement is needed when the governor no longer holds the correct pressure range or fails to signal the compressor.
Part Number: 275491X
D2 GOVERNOR
Unit: ea
Dealer: Post Onsite
Compatibility, alternatives, and more
Parts commonly needed alongside air system
