Ring Set, Piston2990-01-654-1626

NSN 2990-01-654-1626 · NIIN 016541626 · Part number 4089793

Cummins Inc. · FSC 2990 — Miscellaneous Engine Accessories, Nonaircraft · FSG 29 — Engine Accessories · CAGE 15434

Government record, cited

NSN 2990-01-654-1626 — this item is cataloged by the U.S. Government under National Stock Number 2990-01-654-1626. Manufacturer of record part number: 4089793.

Also searched as 2990-01-654-1626 · 2990016541626 · NIIN 016541626 · 01-654-1626 · FSC 2990 Miscellaneous Engine Accessories, Nonaircraft · CAGE 15434 · 4089793

Nearby stock numbers ← 2990-01-654-0398 Pipe, Exhaust · 2990-01-654-3654 Engine →

Features

Ring Set,piston — FSC 2990
1 manufacturer part number on file
Manufacturer of record: Cummins Inc.

Identification

NSN: 2990-01-654-1626
NIIN: 016541626
FSC: 2990 — Miscellaneous Engine Accessories, Nonaircraft
FSG: 29 — Engine Accessories
Primary part number: 4089793
Manufacturer: Cummins Inc.

General Description

The Ring Set,piston, cataloged under National Stock Number 2990-01-654-1626, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Cummins Inc.. 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	2990-01-654-1626
Primary Part Number	4089793
Item Name	Ring Set,piston
FSC / FSG	2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft
Manufacturer	Cummins 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)
Criticality Code	X

Cross-Reference Index

Part Number	Manufacturer
4089793 PRIMARY	Cummins 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.

2990-00-001-0001

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 2990-01-654-1626?

NSN 2990-01-654-1626 is a Ring Set,piston, manufactured by Cummins Inc., classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.

What part numbers are listed for NSN 2990-01-654-1626?

NSN 2990-01-654-1626 has 1 manufacturer part number on file: 4089793 (Cummins Inc.).

What are the specifications of 4089793?

Key specifications for 4089793: Part Name Assigned by Controlling Agency: SET,PISTON RING; End Item Identification: 2815016319826. 0 specifications are documented in the U.S. Government catalog.

Is NSN 2990-01-654-1626 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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