SteelDog - D-2 Air Compressor Governor (P/N 275491) (SKU# 09743)
D-2 Air Governor - 275491 - Automatic Compressor Control for Heavy-Duty Vehicles
The D-2 Air Governor (Part #275491) is a vital component in heavy-duty air brake systems, responsible for controlling the cut-in and cut-out pressure of the air compressor. Designed to match OEM specifications, this governor ensures optimal air system performance by signaling the compressor when to start and stop based on system pressure.
Built with a corrosion-resistant die-cast housing and precision-calibrated internals, the 275491 model provides long-lasting reliability and consistent performance in demanding environments. It is compatible with most standard air compressors and is widely used in both OE and aftermarket installations.
Specifications:
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Part Number: 275491
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Type: D-2 Style Air Governor
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Function: Compressor Cut-In/Cut-Out Pressure Regulation
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Housing Material: Die-Cast Zinc Alloy
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Thread Size: 1/8" NPT Ports (Unloader & Reservoir Connections)
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Pressure Range:
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Factory Set: 105–125 PSI (Adjustable)
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Adjustable Range: Typically 100–135 PSI
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Mounting Style: Direct Mount or Remote Mount (with bracket, not included)
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Weight: Approx. 0.5 lbs
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Serviceability: Field-Adjustable
Features:
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Regulates compressor activity to maintain proper system pressure
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Compatible with most air compressors on heavy-duty trucks
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Factory-set pressure range suitable for DOT air brake systems
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Resistant to corrosion and environmental wear
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Simple, compact, and easy to install or replace
Vehicle Applications:
| Make | Model(s) | System Use | Year Range |
|---|---|---|---|
| Freightliner | Cascadia, Columbia, M2 | Air Compressor Control | 2004–Present |
| Kenworth | T680, T800, W900 | Air Brake System Regulation | 2000–Present |
| Peterbilt | 379, 389, 579 | Air Compressor Control | 1998–Present |
| Volvo | VNL, VNM Series | Air System Pressure Governor | 2003–Present |
| International | ProStar, LT, 9900 Series | Air Brake Compressor Activation | 2005–Present |
Note: Always confirm thread sizes and mounting configuration before installation. Compatible with most Bendix-style air compressors.
Free shipping on orders over $1,500.00
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