Muffler, Exhaust2990-01-406-8846

NSN 2990-01-406-8846 · NIIN 014068846 · Part number WD70

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

Government record, cited

NSN 2990-01-406-8846 — this item is cataloged by the U.S. Government under National Stock Number 2990-01-406-8846. Manufacturer of record part number: WD70.

Also searched as 2990-01-406-8846 · 2990014068846 · NIIN 014068846 · 01-406-8846 · FSC 2990 Miscellaneous Engine Accessories, Nonaircraft · CAGE 66289 · WD70

Nearby stock numbers ← 2990-01-406-8738 Control Assembly, Push-Pull · 2990-01-406-8856 Pipe, Exhaust →

Features

Muffler,exhaust — FSC 2990
Inlet Flange Shape: ROUND SINGLE INLET
Operating Position: HORIZONTAL
Coolant Type: AIR
Design Type: DRY
Water Outlet Connection Type: UNTHREADED
Inlet Projection Length: 1.500 INCHES NOMINAL SINGLE INLET IN
Muffler Design: MULTIPASS

Identification

NSN: 2990-01-406-8846
NIIN: 014068846
FSC: 2990 — Miscellaneous Engine Accessories, Nonaircraft
FSG: 29 — Engine Accessories
Primary part number: WD70
Manufacturer: Wisconsin Motors, Llc

General Description

The Muffler,exhaust, cataloged under National Stock Number 2990-01-406-8846, 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 13 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	2990-01-406-8846
Primary Part Number	WD70
Item Name	Muffler,exhaust
FSC / FSG	2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft
Manufacturer	Wisconsin Motors, Llc
Status	ACTIVE
Inlet Flange Shape	ROUND SINGLE INLET
Operating Position	HORIZONTAL
Coolant Type	AIR
Design Type	DRY
Water Outlet Connection Type	UNTHREADED
Inlet Projection Length	1.500 INCHES NOMINAL SINGLE INLET IN
Muffler Design	MULTIPASS
Outlet Flange Shape	ROUND FIRST OUTLET
Tube Quantity	2
Inlet Connection Type	UNTHREADED SINGLE INLET
Body Shape	ROUND
Surface Treatment	CHROMATE ZINC
Material	STEEL LOCATION NOT OTHERWISE SPECIFIED

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

Part Number	Manufacturer
WD70 PRIMARY	Wisconsin Motors, Llc (USA)

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 2990-01-406-8846?

NSN 2990-01-406-8846 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 2990-01-406-8846?

NSN 2990-01-406-8846 has 1 manufacturer part number on file: WD70 (Wisconsin Motors, Llc).

What are the specifications of WD70?

Key specifications for WD70: Inlet Flange Shape: ROUND SINGLE INLET; Operating Position: HORIZONTAL; Coolant Type: AIR; Design Type: DRY. 13 specifications are documented in the U.S. Government catalog.

Is NSN 2990-01-406-8846 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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