PartsTable TECHNICAL DATA SHEET

NSN 2990-01-047-2218Government record, cited

Muffler, Exhaust2990-01-047-2218

NSN 2990-01-047-2218 · NIIN 010472218 · Part number WD-104

Wisconsin Motors, Llc · FSC 2990 — Miscellaneous Engine Accessories, Nonaircraft · FSG 29 — Engine Accessories · CAGE 66289

Government record, cited

NSN 2990-01-047-2218 — this item is cataloged by the U.S. Government under National Stock Number 2990-01-047-2218. Manufacturer of record part number: WD-104.

Also searched as 2990-01-047-2218 · 2990010472218 · NIIN 010472218 · 01-047-2218 · FSC 2990 Miscellaneous Engine Accessories, Nonaircraft · CAGE 66289 · WD-104 · ABT9458 · ABT9458 · T-9458 · 9458

Nearby stock numbers ← 2990-01-047-2011 Pipe, Exhaust · 2990-01-047-2219 Muffler, Exhaust →

Features

Muffler,exhaust — FSC 2990
Operating Position: HORIZONTAL
Inlet Location: CENTRALLY LOCATED IN END SECTION OF BODY
Coolant Type: AIR
Design Type: DRY
Overall Diameter: 4.240 INCHES NOMINAL IN
Inlet Thread Location: EXTERNAL SINGLE INLET
Inlet Projection Length: 1.620 INCHES NOMINAL SINGLE INLET IN

Identification

NSN: 2990-01-047-2218
NIIN: 010472218
FSC: 2990 — Miscellaneous Engine Accessories, Nonaircraft
FSG: 29 — Engine Accessories
Primary part number: WD-104
Manufacturer: Wisconsin Motors, Llc

General Description

The Muffler,exhaust, cataloged under National Stock Number 2990-01-047-2218, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Wisconsin Motors, Llc. Government technical data includes 20 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	2990-01-047-2218
Primary Part Number	WD-104
Item Name	Muffler,exhaust
FSC / FSG	2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft
Manufacturer	Wisconsin Motors, Llc
Status	ACTIVE
Operating Position	HORIZONTAL
Inlet Location	CENTRALLY LOCATED IN END SECTION OF BODY
Coolant Type	AIR
Design Type	DRY
Overall Diameter	4.240 INCHES NOMINAL IN
Inlet Thread Location	EXTERNAL SINGLE INLET
Inlet Projection Length	1.620 INCHES NOMINAL SINGLE INLET IN
Baffle Quantity	1
Muffler Design	LOUVER
Outlet Outside Diameter	1.250 INCHES NOMINAL FIRST OUTLET IN
Tube Quantity	1
Inlet Connection Type	THREADED SINGLE INLET
Thread Direction	RIGHT-HAND SINGLE INLET
Body Shape	ROUND
Inlet Thread Size	1-11-1/2 SINGLE INLET
Inlet Thread Series Designator	NPT SINGLE INLET
Material	STEEL LOCATION NOT OTHERWISE SPECIFIED
Outlet Projection Length	1.100 INCHES NOMINAL FIRST OUTLET IN
Outlet Connection Type	UNTHREADED FIRST OUTLET
Outlet Location	CENTRALLY LOCATED IN END SECTION OF BODY

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 6

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

4730-01-195-19709458 POSSIBLE MATCH

PLUG,BUTTON

Possible match (shared part number)Hose-Mccann Telephone Co, Inc

6145-01-200-63779458 POSSIBLE MATCH

CABLE,SPECIAL PURPOSE,ELECTRICAL

Possible match (shared part number)Belden Wire & Cable Company Llc Dba Belden Cdt Electronics Division

5310-01-275-59289458 POSSIBLE MATCH

NUT,SPECIAL

Possible match (shared part number)Carlisle & Finch Co

4320-01-313-37379458 POSSIBLE MATCH

PUMP,ROTARY

Possible match (shared part number)C.h. Reed, Inc

4320-01-332-38339458 POSSIBLE MATCH

PUMP,ROTARY

Possible match (shared part number)Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor

5935-01-425-02839458 POSSIBLE MATCH

CONNECTOR,RECEPTACLE,ELECTRICAL

Possible match (shared part number)General Dynamics-Ots, Inc. Div Ordnance and Tactical Systems

Cross-Reference Index

Part Number	Manufacturer
ABT9458	Brighton Cromwell Llc (USA)
T-9458	Cummins Filtration Inc. (USA)
WD-104 PRIMARY	Wisconsin Motors, Llc (USA)
9458 PRIMARY	Cummins Filtration Inc. (USA)

Reference documents

Reference	Meaning
ABT9458	5/9 Secondary reference Ar Bee Corp

Related Parts

4730-01-195-1970POSSIBLE MATCH

PLUG,BUTTON

9458

6145-01-200-6377POSSIBLE MATCH

CABLE,SPECIAL PURPOSE,ELECTRICAL

9458

5310-01-275-5928POSSIBLE MATCH

NUT,SPECIAL

9458

4320-01-313-3737POSSIBLE MATCH

PUMP,ROTARY

9458

4320-01-332-3833POSSIBLE MATCH

PUMP,ROTARY

9458

5935-01-425-0283POSSIBLE MATCH

CONNECTOR,RECEPTACLE,ELECTRICAL

9458

Frequently Asked Questions

What is NSN 2990-01-047-2218?

NSN 2990-01-047-2218 is a Muffler,exhaust, manufactured by Wisconsin Motors, Llc, classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.

What part numbers are listed for NSN 2990-01-047-2218?

NSN 2990-01-047-2218 has 4 manufacturer part numbers on file: ABT9458 (Brighton Cromwell Llc), T-9458 (Cummins Filtration Inc.), WD-104 (Wisconsin Motors, Llc), 9458 (Cummins Filtration Inc.).

What NSN replaces 2990-01-047-2218?

6 possible matches (shared part number, not a government interchangeability claim): 4730-01-195-1970, 6145-01-200-6377, 5310-01-275-5928. Verify interchangeability with system specifications before substitution.

What are the specifications of WD-104?

Key specifications for WD-104: Operating Position: HORIZONTAL; Inlet Location: CENTRALLY LOCATED IN END SECTION OF BODY; Coolant Type: AIR; Design Type: DRY. 20 specifications are documented in the U.S. Government catalog.

Is NSN 2990-01-047-2218 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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