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Technical Data Sheet
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3278S305 — SPIDER,DIFFERENTIAL

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

3278S305: SPIDER,DIFFERENTIAL.

The SPIDER,DIFFERENTIAL is a the manufacturer industrial component. Key specifications include end_item_identification: LIGHT-DUTY TRUCK,CHEVROLET MOTOR DIV OF GENERAL MOTORS CORP,1983-85 MODELS C6 AND C7. This part is cataloged in the U.S.

Government catalog under NSN 2520-01-179-8764, 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
3278S305
NSN: 2520-01-179-8764
FSC: 2520 — Vehicular Power Transmission Components
CAGE: 3D6E9 — MERITOR INDUSTRIAL PRODUCTS, LLC (USA)
SPECIFICATIONS
end_item_identificationLIGHT-DUTY TRUCK,CHEVROLET MOTOR DIV OF GENERAL MOTORS CORP,1983-85 MODELS C6 AND C7
NSN2520-01-179-8764
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SPIDER,DIFFERENTIAL TITLE COMPONENT PN 3278S305 MFR SPIDER,DIFFERENTIAL
TECHNICAL CHARACTERISTICS
END ITEM IDENTIFICATIONLIGHT-DUTY TRUCK,CHEVROLET MOTOR DIV OF GENERAL MOTORS CORP,1983-85 MODELS C6 AND C7
OTHER ITEMS IN FSC 2520 — Vehicular Power Transmission Components
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
2520-00-005-4937 2520-00-006-6257 2520-00-008-9977 2520-00-039-6567 2520-00-242-3316 2520-00-358-3905 2520-00-366-7191 2520-00-708-6603
SUBSTITUTES & CROSS-REFERENCES 1
15513983Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 3278S305?
3278S305 is a SPIDER,DIFFERENTIAL.
What parts can replace 3278S305?
There is 1 known substitute for 3278S305: 15513983. Substitute compatibility should be verified for your specific system.
What is the NSN for 3278S305?
3278S305 is cataloged in the U.S. Government catalog under NSN 2520-01-179-8764. 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.