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4089978 — GASKET SET

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

4089978: GASKET SET.

The GASKET SET is a the manufacturer industrial component. Key specifications include part_name_assigned_by_controlling_agency: UPPER ENGINE GASKET SET. This part is cataloged in the U.S.

Government catalog under NSN 5330-01-641-2470, 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
4089978
NSN: 5330-01-641-2470
FSC: 5330 — Packing and Gasket Materials
CAGE: 15434 — CUMMINS INC. (USA)
SPECIFICATIONS
special_featuresSET INCL. P/N 3073966 3678603 3920773 3921926 3922794 3931824 3937142 3937479 3737709 3743888 3759798 3963990 3966708 3967059 3967891 3970134 39754873990084 4010519 4010643 4062328
part_name_assigned_by_controlling_agencyUPPER ENGINE GASKET SET
NSN5330-01-641-2470
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 4089978 MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
TECHNICAL CHARACTERISTICS
SPECIAL FEATURESSET INCL. P/N 3073966 3678603 3920773 3921926 3922794 3931824 3937142 3937479 3737709 3743888 3759798 3963990 3966708 3967059 3967891 3970134 39754873990084 4010519 4010643 4062328
PART NAME ASSIGNED BY CONTROLLING AGENCYUPPER ENGINE GASKET SET
OTHER ITEMS IN FSC 5330 — Packing and Gasket Materials
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5330-00-000-0085 5330-00-000-0167 5330-00-000-5275 5330-00-001-1260 5330-00-001-1833 5330-00-001-1844 5330-00-001-1845 5330-00-001-1846
SUBSTITUTES & CROSS-REFERENCES 1
40108728Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 4089978?
4089978 is a GASKET SET.
What parts can replace 4089978?
There is 1 known substitute for 4089978: 40108728. Substitute compatibility should be verified for your specific system.
What is the NSN for 4089978?
4089978 is cataloged in the U.S. Government catalog under NSN 5330-01-641-2470. 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.