PartsTable TECHNICAL DATA SHEET

NSN 2990-00-355-7749Government record, cited

Muffler, Exhaust2990-00-355-7749

NSN 2990-00-355-7749 · NIIN 003557749 · Part number 12320-N

Cummins Filtration Inc. · FSC 2990 — Miscellaneous Engine Accessories, Nonaircraft · FSG 29 — Engine Accessories · CAGE 76700

Government record, cited

NSN 2990-00-355-7749 — this item is cataloged by the U.S. Government under National Stock Number 2990-00-355-7749. Manufacturer of record part number: 12320-N.

Also searched as 2990-00-355-7749 · 2990003557749 · NIIN 003557749 · 00-355-7749 · FSC 2990 Miscellaneous Engine Accessories, Nonaircraft · CAGE 76700 · 12320-N · 343265 · ABT12320 · T-12320 · ABT12320 · 12320

Nearby stock numbers ← 2990-00-355-7153 · 2990-00-356-0692 →

Features

Muffler,exhaust — FSC 2990
2 manufacturer part numbers on file
Manufacturer of record: Cummins Filtration Inc.

Identification

NSN: 2990-00-355-7749
NIIN: 003557749
FSC: 2990 — Miscellaneous Engine Accessories, Nonaircraft
FSG: 29 — Engine Accessories
Primary part number: 12320-N
Manufacturer: Cummins Filtration Inc.

General Description

The Muffler,exhaust, cataloged under National Stock Number 2990-00-355-7749, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Cummins Filtration Inc.. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 7 items share a part number with this NSN in the catalog (possible match — not a government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.

Catalog Facts

Item Name	Muffler,exhaust
FSC / FSG	2990 — Miscellaneous Engine Accessories, Nonaircraft (FSG 29)
Manufacturers	Brighton Cromwell Llc (CAGE 3NNX8); Cummins Filtration Inc. (CAGE 76700)

Technical Specifications

Parameter	Value
NSN	2990-00-355-7749
Primary Part Number	12320-N
Item Name	Muffler,exhaust
FSC / FSG	2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft
Manufacturer	Cummins Filtration 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)
Criticality Code	X

⇄ Related Items 7

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

1560-00-771-569912320 POSSIBLE MATCH

PLATE,CABIN AIR INT

Possible match (shared part number)Piper Industrial Manufacturing Company, Llc Div Piper Industrial Manufacturing Company

5330-01-207-759212320 P POSSIBLE MATCH

SEAL,PLAIN

Possible match (shared part number)Johns Manville Intl

5925-01-238-822145-700-1G1-P10-DD POSSIBLE MATCH

CIRCUIT BREAKER

Possible match (shared part number)Oakland Industries Ltd

5340-01-473-221812320 POSSIBLE MATCH

BRACKET,MOUNTING

Possible match (shared part number)DP Manufacturing Inc.

4130-01-498-6278 POSSIBLE MATCH

BAFFLE,AIRFLOW,ELECTRONIC EQUIPM

Possible match (shared part number)

5340-01-513-093212320 POSSIBLE MATCH

BRACKET,MOUNTING

Possible match (shared part number)Brunswick Corp Dba Mercury Marine Div Mercury Marine

6515-01-575-9522J0304R POSSIBLE MATCH

FILTER MEDIA,ANESTH

Possible match (shared part number)Jorgensen Laboratories, Inc. Dba Jorgensen Laboratories Inc

Cross-Reference Index

Part Number	Manufacturer
ABT12320	Brighton Cromwell Llc (USA)
12320-N PRIMARY	Cummins Filtration Inc. (USA)

Reference documents

Reference	Meaning
343265	5/9 Secondary reference Mitsubishi Caterpillar Forklift America, Inc
T-12320	5/9 Secondary reference Cummins Filtration Inc.
ABT12320	5/9 Secondary reference Ar Bee Corp
12320	D/9 Drawing number reference only Cummins Filtration Inc.

Related Parts

1560-00-771-5699POSSIBLE MATCH

PLATE,CABIN AIR INT

12320

5330-01-207-7592POSSIBLE MATCH

SEAL,PLAIN

12320 P

5925-01-238-8221POSSIBLE MATCH

CIRCUIT BREAKER

45-700-1G1-P10-DD

5340-01-473-2218POSSIBLE MATCH

BRACKET,MOUNTING

12320

4130-01-498-6278POSSIBLE MATCH

BAFFLE,AIRFLOW,ELECTRONIC EQUIPM

5340-01-513-0932POSSIBLE MATCH

BRACKET,MOUNTING

12320

6515-01-575-9522POSSIBLE MATCH

FILTER MEDIA,ANESTH

J0304R

Frequently Asked Questions

What is NSN 2990-00-355-7749?

NSN 2990-00-355-7749 is a Muffler,exhaust, manufactured by Cummins Filtration Inc., classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.

What part numbers are listed for NSN 2990-00-355-7749?

NSN 2990-00-355-7749 has 2 manufacturer part numbers on file: ABT12320 (Brighton Cromwell Llc), 12320-N (Cummins Filtration Inc.).

What NSN replaces 2990-00-355-7749?

7 possible matches (shared part number, not a government interchangeability claim): 1560-00-771-5699, 5330-01-207-7592, 5925-01-238-8221. Verify interchangeability with system specifications before substitution.

Is NSN 2990-00-355-7749 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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