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Technical Data Sheet
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498.661 — HEAT PROTECTOR,COMPARTMENT HEATE

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

498.661: HEAT PROTECTOR,COMPARTMENT HEATE.

HEAT PROTECTOR,COMPARTMENT HEATE. Key specifications include end_item_identification: 3810-01-205-2716. This part is cataloged in the U.S.

Government catalog under NSN 2815-00-423-4563, 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
498.661
NSN: 2815-00-423-4563
NIINs: 004234563, 012841676
FSC: 2815 — Diesel Engines and Components
CAGE: 14541 — COOPER MACHINERY SERVICES LLC (USA)
SPECIFICATIONS
end_item_identification3810-01-205-2716
general_characteristics_item_descriptionSQUARE SHAPED,MOLDED W/ROUNDED CORNERS,CENTER HOLE W/NECK LIKE PROTRUSION ONE END OTHER END OPENED SQUARE TO MATE W/CASE TO ENCLOSE GLOWPLUG,PHOTOCELL AND OVERHEAT PROTECTOR
NSN2815-00-423-4563
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available HEAT PROTECTOR,COMPARTMENT HEATE TITLE COMPONENT PN 498.661 MFR HEAT PROTECTOR,COMPART
KEY FEATURES
•
COUNTERSINK ANGLE IN DEG: 45.0
•
AA END CHAMFER ANGLE IN DEG: 45.0
•
COUNTERSINK DIAMETER: 1.267 INCHES NOMINAL IN
•
AA END CHAMFER LENGTH: 0.125 INCHES NOMINAL IN
•
MAJOR DIAMETER LENGTH: 3.795 INCHES NOMINAL IN
•
BB END SHANK DIAMETER: 1.866 INCHES NOMINAL IN
•
STYLE DESIGNATOR: PLAIN, SHOULDERED
TECHNICAL CHARACTERISTICS
COUNTERSINK ANGLE IN DEG45.0
AA END CHAMFER ANGLE IN DEG45.0
COUNTERSINK DIAMETER1.267 INCHES NOMINAL IN
AA END CHAMFER LENGTH0.125 INCHES NOMINAL IN
MAJOR DIAMETER LENGTH3.795 INCHES NOMINAL IN
BB END SHANK DIAMETER1.866 INCHES NOMINAL IN
STYLE DESIGNATORPLAIN, SHOULDERED
OVERALL LENGTH9.016 INCHES NOMINAL IN
BORE COUNTERBORENOT INCLUDED
OUTSIDE DIAMETER2.125 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 1
9866Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — stock exhausted; no further procurementNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 498.661?
498.661 is a HEAT PROTECTOR,COMPARTMENT HEATE.
What parts can replace 498.661?
There is 1 known substitute for 498.661: 9866. Substitute compatibility should be verified for your specific system.
What is the NSN for 498.661?
498.661 is cataloged in the U.S. Government catalog under NSN 2815-00-423-4563. 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.