Muffler, Exhaust2990-01-443-1191

NSN 2990-01-443-1191 · NIIN 014431191

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

Government record, cited

Also searched as 2990-01-443-1191 · 2990014431191 · NIIN 014431191 · 01-443-1191 · FSC 2990 Miscellaneous Engine Accessories, Nonaircraft

Nearby stock numbers ← 2990-01-443-1190 Pipe, Exhaust · 2990-01-443-1470 Pipe, Exhaust →

Features

Muffler,exhaust — FSC 2990
Inlet Flange Shape: ROUND SINGLE INLET
Operating Position: VERTICAL
Design Type: WET
Overall Diameter: 10.750 INCHES NOMINAL IN
Inlet Projection Length: 3.000 INCHES NOMINAL SINGLE INLET IN
Inlet Flange Mounting Hole Diameter: 4.500 INCHES NOMINAL SINGLE INLET IN
Muffler Design: STRAIGHT THROUGH

Identification

NSN: 2990-01-443-1191
NIIN: 014431191
FSC: 2990 — Miscellaneous Engine Accessories, Nonaircraft
FSG: 29 — Engine Accessories

General Description

The Muffler,exhaust, cataloged under National Stock Number 2990-01-443-1191, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. Government technical data includes 12 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	2990-01-443-1191
Item Name	Muffler,exhaust
FSC / FSG	2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft
Status	ACTIVE
Inlet Flange Shape	ROUND SINGLE INLET
Operating Position	VERTICAL
Design Type	WET
Overall Diameter	10.750 INCHES NOMINAL IN
Inlet Projection Length	3.000 INCHES NOMINAL SINGLE INLET IN
Inlet Flange Mounting Hole Diameter	4.500 INCHES NOMINAL SINGLE INLET IN
Muffler Design	STRAIGHT THROUGH
Inlet Connection Type	UNTHREADED SINGLE INLET
Body Shape	ROUND
Surface Treatment	CHROMATE ZINC
Material	STEEL CORROSION RESISTING LOCATION NOT OTHERWISE SPECIFIED
Material	GLASS FIBER INSULATION

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
MP-31 SIZE 4.5 IN	3/9 Design control — primary reference Beaird Industries Inc.

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.

2990-00-096-8607

CONTROL ASSEMBLY,PUSH-PULL

2990-00-390-3445

CRANK,HAND,VEHICULAR

2990-00-459-7255

MUFFLER,EXHAUST

2990-00-459-7255

MUFFLER,EXHAUST

2990-00-536-2962

BLOCK,ADJUSTING SCREW

2990-00-903-8226

MUFFLER,EXHAUST

2990-01-151-5443

CONNECTOR,EXHAUST PIPE

2990-01-151-5443

CONNECTOR,EXHAUST PIPE

Frequently Asked Questions

What is NSN 2990-01-443-1191?

NSN 2990-01-443-1191 is a Muffler,exhaust, classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.

What are the specifications of 2990-01-443-1191?

Key specifications for 2990-01-443-1191: Inlet Flange Shape: ROUND SINGLE INLET; Operating Position: VERTICAL; Design Type: WET; Overall Diameter: 10.750 INCHES NOMINAL IN. 12 specifications are documented in the U.S. Government catalog.

Is NSN 2990-01-443-1191 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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