Ring Set, Piston2815-01-122-4091

NSN 2815-01-122-4091 · NIIN 011224091 · Part number 8921721

Rolls-Royce Solutions America Inc · FSC 2815 — Diesel Engines and Components · FSG 28 — Engines, Turbines, and Components · CAGE 72582

Government record, cited

NSN 2815-01-122-4091 — this item is cataloged by the U.S. Government under National Stock Number 2815-01-122-4091. Manufacturer of record part number: 8921721.

Also searched as 2815-01-122-4091 · 2815011224091 · NIIN 011224091 · 01-122-4091 · FSC 2815 Diesel Engines and Components · CAGE 72582 · 8921721

Nearby stock numbers ← 2815-01-122-4010 · 2815-01-122-4141 Manifold, Exhaust →

Features

Ring Set,piston — FSC 2815
Piston Accommodation Quantity: 1
1 manufacturer part number on file
Manufacturer of record: Rolls-Royce Solutions America Inc

Identification

NSN: 2815-01-122-4091
NIIN: 011224091
FSC: 2815 — Diesel Engines and Components
FSG: 28 — Engines, Turbines, and Components
Primary part number: 8921721
Manufacturer: Rolls-Royce Solutions America Inc

General Description

The Ring Set,piston, cataloged under National Stock Number 2815-01-122-4091, is classified within Federal Supply Class 2815 (Diesel Engines and Components) of the Engines, Turbines, and Components group. The manufacturer of record is Rolls-Royce Solutions America Inc. Government technical data includes 1 specification, 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	2815-01-122-4091
Primary Part Number	8921721
Item Name	Ring Set,piston
FSC / FSG	2815 / 28 — Diesel Engines and Components
Manufacturer	Rolls-Royce Solutions America Inc
Status	ACTIVE
Piston Accommodation Quantity	1

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
8921721 PRIMARY	Rolls-Royce Solutions America Inc (USA)

No interchangeability data on file.

Other items in FSC 2815 — Diesel Engines and Components

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

2815-00-011-9099

2815-00-011-9099 · Item name not on file

2815-00-017-1875

2815-00-024-4185

2815-00-024-4185 · Item name not on file

2815-00-033-1482

2815-00-033-1482 · Item name not on file

2815-00-036-5350

2815-00-036-5350 · Item name not on file

2815-00-179-7630

TUBE

2815-00-346-4639

STRAINER ASSY

2815-00-592-5308

RING,PISTON

Frequently Asked Questions

What is NSN 2815-01-122-4091?

NSN 2815-01-122-4091 is a Ring Set,piston, manufactured by Rolls-Royce Solutions America Inc, classified under FSC 2815, Diesel Engines and Components. Status: active.

What part numbers are listed for NSN 2815-01-122-4091?

NSN 2815-01-122-4091 has 1 manufacturer part number on file: 8921721 (Rolls-Royce Solutions America Inc).

What are the specifications of 8921721?

Key specifications for 8921721: Piston Accommodation Quantity: 1; End Item Identification: ENGINE,SERIES 8.2,GENERAL MOTORS CORP. 1 specification is documented in the U.S. Government catalog.

Is NSN 2815-01-122-4091 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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