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Technical Data Sheet
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157-3722 — KNOCKOUT TOOL,ENGINE VALVE SEAT

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

157-3722: KNOCKOUT TOOL,ENGINE VALVE SEAT.

KNOCKOUT TOOL,ENGINE VALVE SEAT. Key specifications include end_item_identification: DIESEL MOTOR, C4.4-C12-C18 CATERPILLAR, part_name_assigned_by_controlling_agency: VALVE GUIDE DRIVER. This part is cataloged in the U.S.

Government catalog under NSN 5120-01-583-5738, 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
157-3722
NSN: 5120-01-583-5738
FSC: 5120 — Hand Tools, Nonedged, Nonpowered
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
end_item_identificationDIESEL MOTOR, C4.4-C12-C18 CATERPILLAR
part_name_assigned_by_controlling_agencyVALVE GUIDE DRIVER
NSN5120-01-583-5738
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available KNOCKOUT TOOL,ENGINE VALVE SEAT TITLE COMPONENT PN 157-3722 MFR KNOCKOUT TOOL,ENGINE V
TECHNICAL CHARACTERISTICS
PART NAME ASSIGNED BY CONTROLLING AGENCYVALVE GUIDE DRIVER
END ITEM IDENTIFICATIONDIESEL MOTOR, C4.4-C12-C18 CATERPILLAR
OTHER ITEMS IN FSC 5120 — Hand Tools, Nonedged, Nonpowered
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5120-00-001-2642 5120-00-001-2644 5120-00-001-2650 5120-00-001-2651 5120-00-001-2652 5120-00-001-2653 5120-00-001-2654 5120-00-001-2655
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 157-3722?
157-3722 is a KNOCKOUT TOOL,ENGINE VALVE SEAT.
What is the NSN for 157-3722?
157-3722 is cataloged in the U.S. Government catalog under NSN 5120-01-583-5738. 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.