The Rotor,pump, cataloged under National Stock Number 4320-01-145-4086, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Westerbeke Corporation. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-01-145-4086 |
| Primary Part Number | 21933 |
| Item Name | Rotor,pump |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Westerbeke Corporation |
| Status | ACTIVE |
| Rotor Design | ROUND |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 21933 PRIMARY | Westerbeke Corporation (USA) |
| 7123-18 PRIMARY | Delphi Powertrain Systems, Llc (USA) |
| Reference | Meaning |
|---|---|
| 4320PL0825408 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| 7123-18 | 5/9 Secondary reference Westerbeke Corporation |
NSN 4320-01-145-4086 is a Rotor,pump, manufactured by Westerbeke Corporation, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-145-4086 has 2 manufacturer part numbers on file: 21933 (Westerbeke Corporation), 7123-18 (Delphi Powertrain Systems, Llc).
Key specifications for 21933: Rotor Design: ROUND; Special Features: W/SEGMENTED VANES; PART OF AN ENGINE FUEL PUMP; End Item Identification: TOWTRACTOR MODEL MB-4, P.S.I. MOBILE PRODUCTS INC.. 1 specification is documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
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.