The Muffler,exhaust, cataloged under National Stock Number 2990-00-100-3985, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. Government technical data includes 5 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 7 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
2510-01-083-289330-326POSSIBLE MATCH
GLASS,WINDSHIELD
Possible match (shared part number)Tankcraft Corp
5895-01-165-678030-326E-10POSSIBLE MATCH
CONTROL,AMPLIFIER
Possible match (shared part number)Kidde Technologies, Inc Div Kidde Aerospace and Defense
3020-01-171-448230326POSSIBLE MATCH
GEAR RACK
Possible match (shared part number)Moog Inc. Dba Ampac-Isp Corp
5365-01-426-6643POSSIBLE MATCH
SPACER,RING
Possible match (shared part number)
5975-01-622-381030326POSSIBLE MATCH
CONDUIT OUTLET
Possible match (shared part number)Mulberry Metal Products Inc
5120-01-631-557330326POSSIBLE MATCH
REMOVAL TOOL,RIVET
Possible match (shared part number)Simonds International Corporation Div Simonds International Corp
5120-01-654-1748POSSIBLE MATCH
WRENCH,BOX AND OPEN END,COMBINAT
Possible match (shared part number)
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
30326
3/9Design control — primary reference
Lauson Division of Tecumseh Products Co
Related Parts
2510-01-083-2893POSSIBLE MATCH
GLASS,WINDSHIELD
30-326
5895-01-165-6780POSSIBLE MATCH
CONTROL,AMPLIFIER
30-326E-10
3020-01-171-4482POSSIBLE MATCH
GEAR RACK
30326
5365-01-426-6643POSSIBLE MATCH
SPACER,RING
5975-01-622-3810POSSIBLE MATCH
CONDUIT OUTLET
30326
5120-01-631-5573POSSIBLE MATCH
REMOVAL TOOL,RIVET
30326
5120-01-654-1748POSSIBLE MATCH
WRENCH,BOX AND OPEN END,COMBINAT
Frequently Asked Questions
What is NSN 2990-00-100-3985?
NSN 2990-00-100-3985 is a Muffler,exhaust, classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
What NSN replaces 2990-00-100-3985?
7 possible matches (shared part number, not a government interchangeability claim): 2510-01-083-2893, 5895-01-165-6780, 3020-01-171-4482. Verify interchangeability with system specifications before substitution.
What are the specifications of 2990-00-100-3985?
Key specifications for 2990-00-100-3985: Inlet Location: ON SIDE OF BODY; Coolant Type: AIR; Design Type: DRY; Nonconnection Outlet Location: ON SIDE OF BODY. 5 specifications are documented in the U.S. Government catalog.
Is NSN 2990-00-100-3985 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.