PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A550Impeller,pump,centrifugal

Circor Naval Solutions Llc Dba Warren Pumps · NSN 4320-01-142-9078 · FSC 4320 · No Item Name Available
Verified by PartsTable
NSN 4320-01-142-9078 — this item is cataloged by the U.S. Government under National Stock Number 4320-01-142-9078. Primary manufacturer part number: A550.
Features
  • Impeller,pump,centrifugal — FSC 4320
  • 1 verified cross-reference
  • Primary manufacturer: Circor Naval Solutions Llc Dba Warren Pumps
Applications
  • Fluid transfer and circulation
  • Cooling system maintenance
  • Industrial process pumping
General Description

The Impeller,pump,centrifugal, cataloged under National Stock Number 4320-01-142-9078, is classified within Federal Supply Class 4320 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Circor Naval Solutions Llc Dba Warren Pumps. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4320-01-142-9078
Primary Part NumberA550
Item NameImpeller,pump,centrifugal
FSC / FSG4320 / 43 — No Item Name Available
ManufacturerCircor Naval Solutions Llc Dba Warren Pumps
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
2805-00-386-34296107385 INTERCHANGEABLE
Valve,poppet,engine
General Motors Llc Dba General Motors Llc
5325-00-449-31651201-550-Z3C INTERCHANGEABLE
Stud,turnlock Fastener
Southco Inc
5325-01-551-4283A550 INTERCHANGEABLE
Eyelet,metallic
Edwin B. Stimpson Company, Inc. Dba Stimpson
Cross-Reference Index
Part NumberManufacturer
A550 PRIMARY Circor Naval Solutions Llc Dba Warren Pumps (USA)
Related Parts
2805-00-386-3429INTERCHANGEABLE
VALVE,POPPET,ENGINE
6107385
5325-00-449-3165INTERCHANGEABLE
STUD,TURNLOCK FASTENER
1201-550-Z3C
5325-01-551-4283INTERCHANGEABLE
EYELET,METALLIC
A550

Frequently Asked Questions

What is NSN 4320-01-142-9078?

NSN 4320-01-142-9078 is a Impeller,pump,centrifugal, manufactured by Circor Naval Solutions Llc Dba Warren Pumps, classified under FSC 4320 (No Item Name Available). Status: active.

What are the part numbers for NSN 4320-01-142-9078?

NSN 4320-01-142-9078 has 1 cross-referenced part number: A550 (Circor Naval Solutions Llc Dba Warren Pumps).

What NSN replaces 4320-01-142-9078?

There are 3 known substitutes for 4320-01-142-9078: 2805-00-386-3429, 5325-00-449-3165, 5325-01-551-4283. Verify interchangeability with system specifications before substitution.

What are the specifications of A550?

Key specifications for A550: End Item Identification: CTFGL PMP 7GPM 35PSI 3550RPM RPM. 1 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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