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991439 ✓ 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

The CLUTCH,FAN,ENGINE is a the manufacturer thermal management component critical for maintaining optimal operating temperatures in enterprise hardware. Key specifications include special_features: SPIN-ON BRACKET, 26 INCH FAN BLADES; VAN HOOLBUS IN, engine_design_control_activity: 4H595, engine_model_number_for_which_designed: HT550. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 2930-01-538-9734, 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
991439
NSN: 2930-01-538-9734
FSC: 2930
CAGE: 62038 — HORTON INC. (USA)
SPECIFICATIONS
special_featuresSPIN-ON BRACKET, 26 INCH FAN BLADES; VAN HOOLBUS IN
engine_design_control_activity4H595
engine_model_number_for_which_designedHT550
NSN2930-01-538-9734
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CLUTCH,FAN,ENGINE TITLE COMPONENT PN 991439 MFR CLUTCH,FAN,ENGINE
KEY FEATURES
•
ENGINE MODEL NUMBER FOR WHICH DESIGNED: HT550
•
ENGINE DESIGN CONTROL ACTIVITY: 4H595
TYPICAL APPLICATIONS
  • Server thermal management and cooling
  • Hot-swap fan replacement in production environments
  • Redundant cooling for high-availability systems
TECHNICAL CHARACTERISTICS (FLIS)
SPECIAL FEATURESSPIN-ON BRACKET, 26 INCH FAN BLADES; VAN HOOLBUS IN
ENGINE MODEL NUMBER FOR WHICH DESIGNEDHT550
ENGINE DESIGN CONTROL ACTIVITY4H595
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
9/64DIAGR100SSInterchangeable
interchangeable cross-reference
interchangeable
B041-2SSInterchangeable
interchangeable cross-reference
interchangeable
1186284Interchangeable
interchangeable cross-reference
interchangeable
99-1451Interchangeable
interchangeable cross-reference
interchangeable
L12126Interchangeable
interchangeable cross-reference
interchangeable
E.MT.4231Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 991439?
991439 is a CLUTCH,FAN,ENGINE.
What parts can replace 991439?
There are 7 known substitutes for 991439: 9/64DIAGR100SS, B041-2SS, 1186284 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 991439?
991439 is cataloged in the Federal Logistics Information System (FLIS) under NSN 2930-01-538-9734. 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