# NSN 2815-01-118-2399: Piston, Valve

NSN 2815-01-118-2399 (also written 2815011182399; NIIN 01-118-2399) is a piston, valve in Federal Supply Class 2815, Diesel Engines and Components. 2 manufacturer part numbers from 2 suppliers are on record. No purchases are on record yet.

## Identification

- NSN: 2815-01-118-2399 (2815011182399)
- NIIN: 01-118-2399 (011182399)
- Item name: PISTON,VALVE
- Federal Supply Class: [FSC 2815 Diesel Engines and Components](https://nsnexplorer.com/fsc/2815/)
- Federal Supply Group: [FSG 28](https://nsnexplorer.com/group/28/)
- Acquisition method suffix code: AMSC C: needs engineering source approval; other sources must qualify first. (observed 2026-10-10)
- Acquisition method code: 3

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| FEAT | SPECIAL FEATURES | CONSISTS OF THE MAIN PISTON VALVE; TWO EACH OF 1.250 IN. PIPE PLUG; EIGHT HI-TEST GRAY IRON PISTON RINGS |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| YB4 | 63857 | CIRCOR NAVAL SOLUTIONS LLC DBA WARREN PUMPS | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| YB4-AP | 1T943 | ACME PRODUCTS & ENGINEERING INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=2815011182399&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=2815011182399
- AMSC record: https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/
- All data is public U.S. government data; every row above links to its source record where one exists.

Canonical page: https://nsnexplorer.com/nsn/2815-01-118-2399/
JSON: https://nsnexplorer.com/api/nsn/2815-01-118-2399.json