Muffler2990-01-108-6121

NSN 2990-01-108-6121 · NIIN 011086121 · Part number MPM09-0141

Stemco Inc Sub of Coltec Industries Inc · FSC 2990 — Miscellaneous Engine Accessories, Nonaircraft · FSG 29 — Engine Accessories · CAGE 26151

Government record, cited

NSN 2990-01-108-6121 — this item is cataloged by the U.S. Government under National Stock Number 2990-01-108-6121. Manufacturer of record part number: MPM09-0141.

Also searched as 2990-01-108-6121 · 2990011086121 · NIIN 011086121 · 01-108-6121 · FSC 2990 Miscellaneous Engine Accessories, Nonaircraft · CAGE 26151 · MPM09-0141

Nearby stock numbers ← 2990-01-108-6072 · 2990-01-108-6147 Cylinder, Air →

Features

Muffler — FSC 2990
1 manufacturer part number on file
Manufacturer of record: Stemco Inc Sub of Coltec Industries Inc

Identification

NSN: 2990-01-108-6121
NIIN: 011086121
FSC: 2990 — Miscellaneous Engine Accessories, Nonaircraft
FSG: 29 — Engine Accessories
Primary part number: MPM09-0141
Manufacturer: Stemco Inc Sub of Coltec Industries Inc

General Description

The Muffler, cataloged under National Stock Number 2990-01-108-6121, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Stemco Inc Sub of Coltec Industries Inc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.

Catalog Facts

Item Name	Muffler
FSC / FSG	2990 — Miscellaneous Engine Accessories, Nonaircraft (FSG 29)
Manufacturers	Stemco Inc Sub of Coltec Industries Inc (CAGE 26151)

Technical Specifications

Parameter	Value
NSN	2990-01-108-6121
Primary Part Number	MPM09-0141
Item Name	Muffler
FSC / FSG	2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft
Manufacturer	Stemco Inc Sub of Coltec Industries Inc
Status	ACTIVE

Lifecycle & Compliance

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

⇄ Related Items 1

Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.

2990-01-345-1195MPM09-0141 POSSIBLE MATCH

MUFFLER,EXHAUST

Possible match (shared part number)Donaldson Company, Inc.

Cross-Reference Index

Part Number	Manufacturer
MPM09-0141 PRIMARY	Stemco Inc Sub of Coltec Industries Inc (USA)

Related Parts

2990-01-345-1195POSSIBLE MATCH

MUFFLER,EXHAUST

MPM09-0141

Frequently Asked Questions

What is NSN 2990-01-108-6121?

NSN 2990-01-108-6121 is a Muffler, manufactured by Stemco Inc Sub of Coltec Industries Inc, classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.

What part numbers are listed for NSN 2990-01-108-6121?

NSN 2990-01-108-6121 has 1 manufacturer part number on file: MPM09-0141 (Stemco Inc Sub of Coltec Industries Inc).

What NSN replaces 2990-01-108-6121?

1 possible match (shared part number, not a government interchangeability claim): 2990-01-345-1195. Verify interchangeability with system specifications before substitution.

Is NSN 2990-01-108-6121 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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