Adaptor, Oil Breathe2990-01-111-2257

NSN 2990-01-111-2257 · NIIN 011112257 · Part number 5135497

Rolls-Royce Solutions America Inc · FSC 2990 — Miscellaneous Engine Accessories, Nonaircraft · FSG 29 — Engine Accessories · CAGE 72582

Government record, cited

NSN 2990-01-111-2257 — this item is cataloged by the U.S. Government under National Stock Number 2990-01-111-2257. Manufacturer of record part number: 5135497.

Also searched as 2990-01-111-2257 · 2990011112257 · NIIN 011112257 · 01-111-2257 · FSC 2990 Miscellaneous Engine Accessories, Nonaircraft · CAGE 72582 · 5135497 · PC5135497

Nearby stock numbers ← 2990-01-111-2051 · 2990-01-111-3293 Hydraulic Amplifier →

Features

Adaptor,oil Breathe — FSC 2990
2 manufacturer part numbers on file
Manufacturer of record: Rolls-Royce Solutions America Inc

Identification

NSN: 2990-01-111-2257
NIIN: 011112257
FSC: 2990 — Miscellaneous Engine Accessories, Nonaircraft
FSG: 29 — Engine Accessories
Primary part number: 5135497
Manufacturer: Rolls-Royce Solutions America Inc

General Description

The Adaptor,oil Breathe, cataloged under National Stock Number 2990-01-111-2257, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Rolls-Royce Solutions America Inc. The record lists 2 manufacturer part numbers 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	Adaptor,oil Breathe
FSC / FSG	2990 — Miscellaneous Engine Accessories, Nonaircraft (FSG 29)
Manufacturers	Rolls-Royce Solutions America Inc (CAGE 72582); Power Components (deutschland) Gmbh (CAGE C7432)

Technical Specifications

Parameter	Value
NSN	2990-01-111-2257
Primary Part Number	5135497
Item Name	Adaptor,oil Breathe
FSC / FSG	2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft
Manufacturer	Rolls-Royce Solutions America 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.

4520-01-493-27985-13-5497 POSSIBLE MATCH

SHC AIR DUCT GRILL

Possible match (shared part number)Hdt Expeditionary Systems Inc

Cross-Reference Index

Part Number	Manufacturer
5135497 PRIMARY	Rolls-Royce Solutions America Inc (USA)
PC5135497	Power Components (deutschland) Gmbh (DEU)

Related Parts

4520-01-493-2798POSSIBLE MATCH

SHC AIR DUCT GRILL

5-13-5497

Frequently Asked Questions

What is NSN 2990-01-111-2257?

NSN 2990-01-111-2257 is a Adaptor,oil Breathe, manufactured by Rolls-Royce Solutions America Inc, classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.

What part numbers are listed for NSN 2990-01-111-2257?

NSN 2990-01-111-2257 has 2 manufacturer part numbers on file: 5135497 (Rolls-Royce Solutions America Inc), PC5135497 (Power Components (deutschland) Gmbh).

What NSN replaces 2990-01-111-2257?

1 possible match (shared part number, not a government interchangeability claim): 4520-01-493-2798. Verify interchangeability with system specifications before substitution.

Is NSN 2990-01-111-2257 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.

PartsTable Design LLC · partstable.com