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657Z0778 — IMPELLER,PUMP,CENTRIFUGAL

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

657Z0778: IMPELLER,PUMP,CENTRIFUGAL.

The IMPELLER,PUMP,CENTRIFUGAL is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY, end_item_identification: WARREN PUMP DIV PUMP MODEL 4-2CVN-15. This part is cataloged in the U.S.

Government catalog under NSN 4320-01-174-9191, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
657Z0778
NSN: 4320-01-174-9191
FSC: 4320 — Power and Hand Pumps
CAGE: 63857 — CIRCOR NAVAL SOLUTIONS LLC DBA WARREN PUMPS (USA)
SPECIFICATIONS
materialNICKEL ALLOY
end_item_identificationWARREN PUMP DIV PUMP MODEL 4-2CVN-15
NSN4320-01-174-9191
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available IMPELLER,PUMP,CENTRIFUGAL TITLE COMPONENT PN 657Z0778 MFR IMPELLER,PUMP,CENTRIFU
KEY FEATURES
•
MATERIAL: NICKEL ALLOY
TECHNICAL CHARACTERISTICS
END ITEM IDENTIFICATIONWARREN PUMP DIV PUMP MODEL 4-2CVN-15
MATERIALNICKEL ALLOY
OTHER ITEMS IN FSC 4320 — Power and Hand Pumps
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4320-00-001-1633 4320-00-001-2628 4320-00-001-2629 4320-00-001-2630 4320-00-001-2631 4320-00-001-2632 4320-00-001-3377 4320-00-001-3384
SUBSTITUTES & CROSS-REFERENCES 1
1799BReference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 657Z0778?
657Z0778 is a IMPELLER,PUMP,CENTRIFUGAL.
What parts can replace 657Z0778?
There is 1 known substitute for 657Z0778: 1799B. Substitute compatibility should be verified for your specific system.
What is the NSN for 657Z0778?
657Z0778 is cataloged in the U.S. Government catalog under NSN 4320-01-174-9191. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.