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PartsTable / COMPONENT / 387993C91
387993C91 ✓ Verified by PartsTable
— · COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

CYLINDER ASSEMBLY,HYDRAULIC BRAK. Key specifications include material: STEEL BODY, bore_type: STRAIGHT, port_style: FLARE LOCATION NOT OTHERWISE SPECIFIED, bore_diameter: 1.250 INCHES NOMINAL IN, overall_width: 2.375 INCHES NOMINAL IN, overall_height: 2.500 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 2530-00-155-7226, 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
387993C91
NSN: 2530-00-155-7226
FSC: 2530
CAGE: 92679 — NAVISTAR INTL CORP MELROSE PARK ENGINE PLANT LOCATION /MELROSE PARK/ (USA)
SPECIFICATIONS
materialSTEEL BODY
bore_typeSTRAIGHT
port_styleFLARE LOCATION NOT OTHERWISE SPECIFIED
bore_diameter1.250 INCHES NOMINAL IN
overall_width2.375 INCHES NOMINAL IN
overall_height2.500 INCHES NOMINAL IN
extended_length3.000 INCHES NOMINAL IN
special_featuresEQUIPPED WITH DUST BOOTS
compressed_length2.250 INCHES NOMINAL IN
port_thread_class2B LOCATION NOT OTHERWISE SPECIFIED
seat_angle_in_deg37.0 LOCATION NOT OTHERWISE SPECIFIED
mounting_provisionTHREADED MOUNTING HOLES
NSN2530-00-155-7226
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CYLINDER ASSEMBLY,HYDRAULIC BRAK TITLE COMPONENT PN 387993C91 MFR CYLINDER ASSEMBLY,HYDR
KEY FEATURES
•
PORT THREAD DIAMETER: 0.438 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
•
PORT STYLE: FLARE LOCATION NOT OTHERWISE SPECIFIED
•
BODY OUTSIDE DIAMETER: 1.465 INCHES NOMINAL IN
•
BORE DIAMETER: 1.250 INCHES NOMINAL IN
•
MOUNTING PROVISION: THREADED MOUNTING HOLES
•
PORT THREAD SERIES DESIGNATOR: UNF LOCATION NOT OTHERWISE SPECIFIED
TECHNICAL CHARACTERISTICS (FLIS)
PORT THREAD DIAMETER0.438 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
PORT STYLEFLARE LOCATION NOT OTHERWISE SPECIFIED
BODY OUTSIDE DIAMETER1.465 INCHES NOMINAL IN
BORE DIAMETER1.250 INCHES NOMINAL IN
OVERALL WIDTH2.375 INCHES NOMINAL IN
MOUNTING PROVISIONTHREADED MOUNTING HOLES
OVERALL HEIGHT2.500 INCHES NOMINAL IN
PORT THREAD SERIES DESIGNATORUNF LOCATION NOT OTHERWISE SPECIFIED
MOUNTING FACILITY THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
MOUNTING TYPE AND LOCATIONFLANGE CENTER SECTION
VERIFIED SUBSTITUTES & CROSS-REFERENCES 22
3703Interchangeable
interchangeable cross-reference
interchangeable
577R723H02Interchangeable
interchangeable cross-reference
interchangeable
1003704-13Interchangeable
interchangeable cross-reference
interchangeable
1452Interchangeable
interchangeable cross-reference
interchangeable
301Interchangeable
interchangeable cross-reference
interchangeable
1062Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 387993C91?
387993C91 is a CYLINDER ASSEMBLY,HYDRAULIC BRAK.
What parts can replace 387993C91?
There are 22 known substitutes for 387993C91: 3703, 577R723H02, 1003704-13 and 19 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 387993C91?
387993C91 is cataloged in the Federal Logistics Information System (FLIS) under NSN 2530-00-155-7226. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026