Pipe, Exhaust2990-01-449-3801

NSN 2990-01-449-3801 · NIIN 014493801 · Part number 3243-00W

Portaco, Inc. · FSC 2990 — Miscellaneous Engine Accessories, Nonaircraft · FSG 29 — Engine Accessories · CAGE 0S4R0

Government record, cited

NSN 2990-01-449-3801 — this item is cataloged by the U.S. Government under National Stock Number 2990-01-449-3801. Manufacturer of record part number: 3243-00W.

Also searched as 2990-01-449-3801 · 2990014493801 · NIIN 014493801 · 01-449-3801 · FSC 2990 Miscellaneous Engine Accessories, Nonaircraft · CAGE 0S4R0 · 3243-00W

Nearby stock numbers ← 2990-01-449-3749 Pipe, Exhaust · 2990-01-449-3802 Muffler, Exhaust →

Features

Pipe,exhaust — FSC 2990
End Item Model Number: MODEL NO D-17S10-15-W
End Item Source: 0S4R0
Design Form: STRAIGHT
End Item Name: MK9M.O.HYD P
Nominal Outside Diameter: 2.500 INCHES IN
Material: STEEL CORROSION RESISTING
Usage Location: EXHAUST PIPE

Identification

NSN: 2990-01-449-3801
NIIN: 014493801
FSC: 2990 — Miscellaneous Engine Accessories, Nonaircraft
FSG: 29 — Engine Accessories
Primary part number: 3243-00W
Manufacturer: Portaco, Inc.

General Description

The Pipe,exhaust, cataloged under National Stock Number 2990-01-449-3801, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Portaco, Inc.. Government technical data includes 7 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	2990-01-449-3801
Primary Part Number	3243-00W
Item Name	Pipe,exhaust
FSC / FSG	2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft
Manufacturer	Portaco, Inc.
Status	ACTIVE
End Item Model Number	MODEL NO D-17S10-15-W
End Item Source	0S4R0
Design Form	STRAIGHT
End Item Name	MK9M.O.HYD P
Nominal Outside Diameter	2.500 INCHES IN
Material	STEEL CORROSION RESISTING
Usage Location	EXHAUST PIPE

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
3243-00W PRIMARY	Portaco, Inc. (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.

2990-00-096-8607

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 2990-01-449-3801?

NSN 2990-01-449-3801 is a Pipe,exhaust, manufactured by Portaco, Inc., classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.

What part numbers are listed for NSN 2990-01-449-3801?

NSN 2990-01-449-3801 has 1 manufacturer part number on file: 3243-00W (Portaco, Inc.).

What are the specifications of 3243-00W?

Key specifications for 3243-00W: End Item Model Number: MODEL NO D-17S10-15-W; End Item Source: 0S4R0; Design Form: STRAIGHT; End Item Name: MK9M.O.HYD P. 7 specifications are documented in the U.S. Government catalog.

Is NSN 2990-01-449-3801 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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