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74980104 — VALVE,POPPET,ENGINE

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

74980104: VALVE,POPPET,ENGINE.

The VALVE,POPPET,ENGINE is a the manufacturer industrial component. Key specifications include head_style: MUSHROOM, stem_style: DOUBLE GROOVED, head_height: 0.1562 INCHES NOMINAL IN, neck_radius: 0.3125 INCHES NOMINAL IN, stem_length: 4.8750 INCHES NOMINAL IN, stem_diameter: 0.3100 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 2805-00-145-6044, 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
74980104
NSN: 2805-00-145-6044
FSC: 2805 — Gasoline Reciprocating Engines, Except Aircraft; and Components
CAGE: 0AHU0 — KALMAR AC INC (USA)
SPECIFICATIONS
head_styleMUSHROOM
stem_styleDOUBLE GROOVED
head_height0.1562 INCHES NOMINAL IN
neck_radius0.3125 INCHES NOMINAL IN
stem_length4.8750 INCHES NOMINAL IN
stem_diameter0.3100 INCHES NOMINAL IN
chamfer_length0.0312 INCHES NOMINAL IN
outside_diameter1.2500 INCHES NOMINAL IN
seat_angle_in_deg45.0
first_groove_width0.2650 INCHES NOMINAL IN
second_groove_width0.3750 INCHES NOMINAL IN
carbon_relief_grooveNOT INCLUDED
NSN2805-00-145-6044
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available VALVE,POPPET,ENGINE TITLE COMPONENT PN 74980104 MFR VALVE,POPPET,ENGINE
KEY FEATURES
•
STEM DIAMETER: 0.3100 INCHES NOMINAL IN
•
FSC APPLICATION DATA: GASOLINE ENGINE
•
HEAD HEIGHT: 0.1562 INCHES NOMINAL IN
•
SECOND GROOVE WIDTH: 0.3750 INCHES NOMINAL IN
•
STEM LENGTH: 4.8750 INCHES NOMINAL IN
•
SEAT ANGLE IN DEG: 45.0
•
CHAMFER LENGTH: 0.0312 INCHES NOMINAL IN
•
NECK RADIUS: 0.3125 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
STEM DIAMETER0.3100 INCHES NOMINAL IN
FSC APPLICATION DATAGASOLINE ENGINE
HEAD HEIGHT0.1562 INCHES NOMINAL IN
SECOND GROOVE WIDTH0.3750 INCHES NOMINAL IN
STEM LENGTH4.8750 INCHES NOMINAL IN
SEAT ANGLE IN DEG45.0
CHAMFER LENGTH0.0312 INCHES NOMINAL IN
NECK RADIUS0.3125 INCHES NOMINAL IN
OUTSIDE DIAMETER1.2500 INCHES NOMINAL IN
DISTANCE FROM FIRST GROOVE TO STEM END0.3750 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 2
109274Reference document
Same NSN cross-reference
Reference document — Secondary reference
23631Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 74980104?
74980104 is a VALVE,POPPET,ENGINE.
What parts can replace 74980104?
There are 2 known substitutes for 74980104: 109274, 23631. Substitute compatibility should be verified for your specific system.
What is the NSN for 74980104?
74980104 is cataloged in the U.S. Government catalog under NSN 2805-00-145-6044. 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.