Piston, Valve2815-01-681-5251

NSN 2815-01-681-5251 · NIIN 016815251 · Part number 4C-9043

Caterpillar Inc Div Caterpillar Defense · FSC 2815 — Diesel Engines and Components · FSG 28 — Engines, Turbines, and Components · CAGE 11083

Government record, cited

NSN 2815-01-681-5251 — this item is cataloged by the U.S. Government under National Stock Number 2815-01-681-5251. Manufacturer of record part number: 4C-9043.

Also searched as 2815-01-681-5251 · 2815016815251 · NIIN 016815251 · 01-681-5251 · FSC 2815 Diesel Engines and Components · CAGE 11083 · 4C-9043

Nearby stock numbers ← 2815-01-681-5245 Ring, Piston · 2815-01-681-5609 Guide, Valve Stem →

Features

Piston,valve — FSC 2815
Valve Design Control Activity: 11083
1 manufacturer part number on file
Manufacturer of record: Caterpillar Inc Div Caterpillar Defense

Identification

NSN: 2815-01-681-5251
NIIN: 016815251
FSC: 2815 — Diesel Engines and Components
FSG: 28 — Engines, Turbines, and Components
Primary part number: 4C-9043
Manufacturer: Caterpillar Inc Div Caterpillar Defense

General Description

The Piston,valve, cataloged under National Stock Number 2815-01-681-5251, is classified within Federal Supply Class 2815 (Diesel Engines and Components) of the Engines, Turbines, and Components group. The manufacturer of record is Caterpillar Inc Div Caterpillar Defense. 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	2815-01-681-5251
Primary Part Number	4C-9043
Item Name	Piston,valve
FSC / FSG	2815 / 28 — Diesel Engines and Components
Manufacturer	Caterpillar Inc Div Caterpillar Defense
Status	ACTIVE
Valve Design Control Activity	11083

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
4C-9043 PRIMARY	Caterpillar Inc Div Caterpillar Defense (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 2815-01-681-5251?

NSN 2815-01-681-5251 is a Piston,valve, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 2815, Diesel Engines and Components. Status: active.

What part numbers are listed for NSN 2815-01-681-5251?

NSN 2815-01-681-5251 has 1 manufacturer part number on file: 4C-9043 (Caterpillar Inc Div Caterpillar Defense).

What are the specifications of 4C-9043?

Key specifications for 4C-9043: Special Features: PART OF 9U-5107 GROUP, 3600 SPARK IGNITION ENGINES; Part Name Assigned by Controlling Agency: PISTON RING COMPRESSOR GROUP; Valve Design Control Activity: 11083. 1 specification is documented in the U.S. Government catalog.

Is NSN 2815-01-681-5251 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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