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3978313 — GEAR,RING,FLYWHEEL

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

3978313: GEAR,RING,FLYWHEEL.

The GEAR,RING,FLYWHEEL is a the manufacturer industrial component. Key specifications include special_features: ITEM IS USED IN SEVERAL OF THE MFR'S MIDRANGE ENGINES, end_item_identification: DIESEL ENGINE. This part is cataloged in the U.S.

Government catalog under NSN 3020-01-595-4057, 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
3978313
NSN: 3020-01-595-4057
FSC: 3020 — Gears, Pulleys, Sprockets, and Transmission Chain
CAGE: 0B8S3 — CUMMINS INC (USA)
SPECIFICATIONS
special_featuresITEM IS USED IN SEVERAL OF THE MFR'S MIDRANGE ENGINES
end_item_identificationDIESEL ENGINE
NSN3020-01-595-4057
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available GEAR,RING,FLYWHEEL TITLE COMPONENT PN 3978313 MFR GEAR,RING,FLYWHEEL
TECHNICAL CHARACTERISTICS
SPECIAL FEATURESITEM IS USED IN SEVERAL OF THE MFR'S MIDRANGE ENGINES
END ITEM IDENTIFICATIONDIESEL ENGINE
OTHER ITEMS IN FSC 3020 — Gears, Pulleys, Sprockets, and Transmission Chain
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
3020-00-000-0091 3020-00-001-0027 3020-00-001-0028 3020-00-001-0063 3020-00-001-0064 3020-00-001-0066 3020-00-001-0071 3020-00-001-0072
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 3978313?
3978313 is a GEAR,RING,FLYWHEEL.
What is the NSN for 3978313?
3978313 is cataloged in the U.S. Government catalog under NSN 3020-01-595-4057. 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.