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31431851 — VALVE,POPPET,ENGINE

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

31431851: VALVE,POPPET,ENGINE.

The VALVE,POPPET,ENGINE is a the manufacturer industrial component. Key specifications include head_style: FLAT, stem_style: GROOVED. This part is cataloged in the U.S.

Government catalog under NSN 2815-01-102-7125, 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
31431851
NSN: 2815-01-102-7125
NIINs: 011027125, 012680229
FSC: 2815 — Diesel Engines and Components
CAGE: 13446 — PERKINS ENGINES INC (USA)
SPECIFICATIONS
head_styleFLAT
stem_styleGROOVED
NSN2815-01-102-7125
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available VALVE,POPPET,ENGINE TITLE COMPONENT PN 31431851 MFR VALVE,POPPET,ENGINE
KEY FEATURES
•
STEM DIAMETER: 0.3720 INCHES NOMINAL IN
•
HEAD HEIGHT: 0.1730 INCHES NOMINAL IN
•
STEM LENGTH: 4.8580 INCHES NOMINAL IN
•
SEAT ANGLE IN DEG: 45.0
•
NECK RADIUS: 0.4370 INCHES NOMINAL IN
•
GROOVE DIAMETER: 0.3120 INCHES NOMINAL IN
•
DISTANCE FROM GROOVE TO STEM END: 0.1560 INCHES NOMINAL IN
•
OUTSIDE DIAMETER: 1.4200 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
STEM DIAMETER0.3720 INCHES NOMINAL IN
HEAD HEIGHT0.1730 INCHES NOMINAL IN
STEM LENGTH4.8580 INCHES NOMINAL IN
SEAT ANGLE IN DEG45.0
NECK RADIUS0.4370 INCHES NOMINAL IN
GROOVE DIAMETER0.3120 INCHES NOMINAL IN
DISTANCE FROM GROOVE TO STEM END0.1560 INCHES NOMINAL IN
OUTSIDE DIAMETER1.4200 INCHES NOMINAL IN
STEM STYLEGROOVED
HEAD STYLEFLAT
SUBSTITUTES & CROSS-REFERENCES 3
99573Reference document
Same NSN cross-reference
Reference document — Secondary reference
02/101607Reference document
Same NSN cross-reference
Reference document — Secondary reference
M3142A052Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 31431851?
31431851 is a VALVE,POPPET,ENGINE.
What parts can replace 31431851?
There are 3 known substitutes for 31431851: 99573, 02/101607, M3142A052. Substitute compatibility should be verified for your specific system.
What is the NSN for 31431851?
31431851 is cataloged in the U.S. Government catalog under NSN 2815-01-102-7125. 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.