Muffler, Exhaust2990-01-417-5889

NSN 2990-01-417-5889 · NIIN 014175889

FSC 2990 — Miscellaneous Engine Accessories, Nonaircraft · FSG 29 — Engine Accessories

Government record, cited

Also searched as 2990-01-417-5889 · 2990014175889 · NIIN 014175889 · 01-417-5889 · FSC 2990 Miscellaneous Engine Accessories, Nonaircraft · DWG2798771 P/N2798744 · 2798774

Nearby stock numbers ← 2990-01-417-4950 Pipe, Exhaust · 2990-01-417-6177 Connector, Exhaust Pipe →

Features

Muffler,exhaust — FSC 2990
Operating Position: HORIZONTAL
Inlet Location: BOTTOM LEFT SIDE OF MUFFLER
Design Type: DRY
Overall Diameter: 193.5 MILLIMETERS NOMINAL MM
Muffler Design: MULTIPASS
Outlet Outside Diameter: 2.000 INCHES NOMINAL FIRST OUTLET IN
Inlet Connection Type: UNTHREADED SINGLE INLET

Identification

NSN: 2990-01-417-5889
NIIN: 014175889
FSC: 2990 — Miscellaneous Engine Accessories, Nonaircraft
FSG: 29 — Engine Accessories

General Description

The Muffler,exhaust, cataloged under National Stock Number 2990-01-417-5889, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. Government technical data includes 14 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	2990-01-417-5889
Item Name	Muffler,exhaust
FSC / FSG	2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft
Status	ACTIVE
Operating Position	HORIZONTAL
Inlet Location	BOTTOM LEFT SIDE OF MUFFLER
Design Type	DRY
Overall Diameter	193.5 MILLIMETERS NOMINAL MM
Muffler Design	MULTIPASS
Outlet Outside Diameter	2.000 INCHES NOMINAL FIRST OUTLET IN
Inlet Connection Type	UNTHREADED SINGLE INLET
Body Shape	ROUND
Surface Treatment	ALUMINUM
Inlet Inside Diameter	1.750 INCHES NOMINAL SINGLE INLET IN
Material	STEEL LOCATION NOT OTHERWISE SPECIFIED
Outlet Projection Length	50.0 MILLIMETERS NOMINAL FIRST OUTLET MM
Outlet Connection Type	UNTHREADED FIRST OUTLET
Outlet Location	TOP RH SIDE OF MUFFLER

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL A — No Demilitarization Required
Hazard	No hazard code in the DLA record (HMIC N)
Criticality Code	X

Cross-Reference Index

No manufacturer part numbers on file in the U.S. Government catalog.

Reference documents

Reference	Meaning
DWG2798771 P/N2798744	5/9 Secondary reference U.S. Government activity
2798774	3/2 Design control — primary reference U.S. Government activity

No interchangeability data on file.

Other items in FSC 2990 — Miscellaneous Engine Accessories, Nonaircraft

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

2990-00-001-0001

BLOWER ASSEMBLY

2990-00-001-1248

2990-00-001-1248 · Item name not on file

2990-00-001-1250

2990-00-001-1250 · Item name not on file

2990-00-001-2055

2990-00-001-2055 · Item name not on file

2990-00-001-3498

2990-00-001-3498 · Item name not on file

2990-00-001-3520

2990-00-001-3520 · Item name not on file

2990-00-001-3521

2990-00-001-3521 · Item name not on file

2990-00-001-3522

CAP ASSEMBLY,MUFFLE

Frequently Asked Questions

What is NSN 2990-01-417-5889?

NSN 2990-01-417-5889 is a Muffler,exhaust, classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.

What are the specifications of 2990-01-417-5889?

Key specifications for 2990-01-417-5889: Operating Position: HORIZONTAL; Inlet Location: BOTTOM LEFT SIDE OF MUFFLER; Design Type: DRY; Overall Diameter: 193.5 MILLIMETERS NOMINAL MM. 14 specifications are documented in the U.S. Government catalog.

Is NSN 2990-01-417-5889 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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