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9M399 — GOVERNOR ASSEMBLY,AIR BRAKE

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

9M399: GOVERNOR ASSEMBLY,AIR BRAKE.

The GOVERNOR ASSEMBLY,AIR BRAKE is a the manufacturer industrial component. Key specifications include overall_width: 2.310 INCHES NOMINAL IN, overall_height: 4.980 INCHES NOMINAL IN, special_features: PRESSURE RATING IS IN PSI, type/model_designation: BENDIX D-2 GOVERNOR, end_item_identification: MRAP - UNIQUE NSN - USED ON 3 MRAP VARIANTS; MRAP - MAXXPRO DASH ISS W/OGPK AND W/CROWS, part_name_assigned_by_controlling_agency: GOVERNOR,AIR ASSY D-2. This part is cataloged in the U.S.

Government catalog under NSN 2530-00-977-8734, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
9M399
NSN: 2530-00-977-8734
FSC: 2530 — Vehicular Brake, Steering, Axle, Wheel, and Track Components
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
overall_width2.310 INCHES NOMINAL IN
overall_height4.980 INCHES NOMINAL IN
special_featuresPRESSURE RATING IS IN PSI
type/model_designationBENDIX D-2 GOVERNOR
end_item_identificationMRAP - UNIQUE NSN - USED ON 3 MRAP VARIANTS; MRAP - MAXXPRO DASH ISS W/OGPK AND W/CROWS
part_name_assigned_by_controlling_agencyGOVERNOR,AIR ASSY D-2
NSN2530-00-977-8734
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available GOVERNOR ASSEMBLY,AIR BRAKE TITLE COMPONENT PN 9M399 MFR GOVERNOR ASSEMBLY,AIR
SUBSTITUTES & CROSS-REFERENCES 1
275200Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 9M399?
9M399 is a GOVERNOR ASSEMBLY,AIR BRAKE.
What parts can replace 9M399?
There is 1 known substitute for 9M399: 275200. Substitute compatibility should be verified for your specific system.
What is the NSN for 9M399?
9M399 is cataloged in the U.S. Government catalog under NSN 2530-00-977-8734. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.