PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

43891Adapter,flywheel Housing

Power Test, Llc · NSN 2990-01-684-5419 · FSC 2990 · No Item Name Available
Verified by PartsTable
NSN 2990-01-684-5419 — this item is cataloged by the U.S. Government under National Stock Number 2990-01-684-5419. Primary manufacturer part number: 43891.
Features
  • Adapter,flywheel Housing — FSC 2990
  • 1 verified cross-reference
  • Primary manufacturer: Power Test, Llc
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Adapter,flywheel Housing, cataloged under National Stock Number 2990-01-684-5419, is classified within Federal Supply Class 2990 (No Item Name Available) of the Engine Accessories group. The primary manufacturer of record is Power Test, Llc. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN2990-01-684-5419
Primary Part Number43891
Item NameAdapter,flywheel Housing
FSC / FSG2990 / 29 — No Item Name Available
ManufacturerPower Test, Llc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5330-00-285-83914001449-0 INTERCHANGEABLE
Seal,plain Encased
Agco Corp Parts Opn
5365-01-281-873543891 INTERCHANGEABLE
Spacer,ring
Eaton Aerospace Llc Dba Eaton Aerospace Jackson
3030-01-303-819043891 INTERCHANGEABLE
Belt,v
Abd Intl Inc Dba Abdick
5330-01-558-8490GR871 INTERCHANGEABLE
Seal,nonmetallic Special Shaped
Atlantic Rubber Company, Inc.
Cross-Reference Index
Part NumberManufacturer
43891 PRIMARY Power Test, Llc (USA)
Related Parts
5330-00-285-8391INTERCHANGEABLE
SEAL,PLAIN ENCASED
4001449-0
5365-01-281-8735INTERCHANGEABLE
SPACER,RING
43891
3030-01-303-8190INTERCHANGEABLE
BELT,V
43891
5330-01-558-8490INTERCHANGEABLE
SEAL,NONMETALLIC SPECIAL SHAPED
GR871

Frequently Asked Questions

What is NSN 2990-01-684-5419?

NSN 2990-01-684-5419 is a Adapter,flywheel Housing, manufactured by Power Test, Llc, classified under FSC 2990 (No Item Name Available). Status: active.

What are the part numbers for NSN 2990-01-684-5419?

NSN 2990-01-684-5419 has 1 cross-referenced part number: 43891 (Power Test, Llc).

What NSN replaces 2990-01-684-5419?

There are 4 known substitutes for 2990-01-684-5419: 5330-00-285-8391, 5365-01-281-8735, 3030-01-303-8190 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 43891?

Key specifications for 43891: End Item Identification: 4910-01-645-2311; Part Name Assigned by Controlling Agency: ENGINE FLYWHEEL ADAPTER. 2 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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