PartsTable TECHNICAL DATA SHEET
NSN 2990-00-522-1854Government record, cited

Support, Muffler2990-00-522-1854

NSN 2990-00-522-1854 · NIIN 005221854 · Part number 54466
Mitsubishi Caterpillar Forklift America, Inc · FSC 2990 — Miscellaneous Engine Accessories, Nonaircraft · FSG 29 — Engine Accessories · CAGE 78640
Government record, cited
NSN 2990-00-522-1854 — this item is cataloged by the U.S. Government under National Stock Number 2990-00-522-1854. Manufacturer of record part number: 54466.
Also searched as  2990-00-522-1854 · 2990005221854 · NIIN 005221854 · 00-522-1854 · FSC 2990 Miscellaneous Engine Accessories, Nonaircraft · CAGE 78640 · 54466
Nearby stock numbers  ·
Features
  • Support,muffler — FSC 2990
  • 1 manufacturer part number on file
  • Manufacturer of record: Mitsubishi Caterpillar Forklift America, Inc
Identification
  • NSN: 2990-00-522-1854
  • NIIN: 005221854
  • FSC: 2990 — Miscellaneous Engine Accessories, Nonaircraft
  • FSG: 29 — Engine Accessories
  • Primary part number: 54466
  • Manufacturer: Mitsubishi Caterpillar Forklift America, Inc
General Description

The Support,muffler, cataloged under National Stock Number 2990-00-522-1854, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Mitsubishi Caterpillar Forklift America, Inc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.

Catalog Facts
Item NameSupport,muffler
FSC / FSG2990 — Miscellaneous Engine Accessories, Nonaircraft (FSG 29)
ManufacturersMitsubishi Caterpillar Forklift America, Inc (CAGE 78640)
Technical Specifications
ParameterValue
NSN2990-00-522-1854
Primary Part Number54466
Item NameSupport,muffler
FSC / FSG2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft
ManufacturerMitsubishi Caterpillar Forklift America, Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
DEMIL CodeDEMIL A — No Demilitarization Required
HazardNo hazard code in the DLA record (HMIC N)
⇄ Related Items 3
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
5310-00-922-2017120217 POSSIBLE MATCH
WASHER,LOCK
Possible match (shared part number)Rolls-Royce Solutions America Inc
5310-01-146-9605885B054466 POSSIBLE MATCH
WASHER,FLAT
Possible match (shared part number)Northrop Grumman Systems Corporation
3120-01-536-234554466 POSSIBLE MATCH
BUSHING,SLEEVE
Possible match (shared part number)Eaton Aerospace Llc Dba Eaton Aerospace Jackson
Cross-Reference Index
Part NumberManufacturer
54466 PRIMARY Mitsubishi Caterpillar Forklift America, Inc (USA)
Related Parts
5310-00-922-2017POSSIBLE MATCH
WASHER,LOCK
120217
5310-01-146-9605POSSIBLE MATCH
WASHER,FLAT
885B054466
3120-01-536-2345POSSIBLE MATCH
BUSHING,SLEEVE
54466

Frequently Asked Questions

What is NSN 2990-00-522-1854?

NSN 2990-00-522-1854 is a Support,muffler, manufactured by Mitsubishi Caterpillar Forklift America, Inc, classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.

What part numbers are listed for NSN 2990-00-522-1854?

NSN 2990-00-522-1854 has 1 manufacturer part number on file: 54466 (Mitsubishi Caterpillar Forklift America, Inc).

What NSN replaces 2990-00-522-1854?

3 possible matches (shared part number, not a government interchangeability claim): 5310-00-922-2017, 5310-01-146-9605, 3120-01-536-2345. Verify interchangeability with system specifications before substitution.

Is NSN 2990-00-522-1854 hazardous material?

No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.

Sources

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.

✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.
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