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PartsTable / COMPONENT / 5557
5557 ✓ Verified by PartsTable
Giochi Preziosi · COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

The TAPPET,ENGINE POPPET VALVE is a Giochi Preziosi industrial component. Key specifications include material: COPPER, tube_type: THYRATRON, body_shape: ROUND, cone_width: 2.0350 INCHES NOMINAL IN, design_type: DRY, coolant_type: AIR. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5960-00-061-1181, 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
5557
NSN: 5960-00-061-1181
FSC: 5960
CAGE: 80131 — ELECTRONIC INDUSTRIES ASSOCIATION
SPECIFICATIONS
materialCOPPER
tube_typeTHYRATRON
body_shapeROUND
cone_width2.0350 INCHES NOMINAL IN
design_typeDRY
coolant_typeAIR
stopper_typePLUG
adjustabilityADJUSTABLE
bore_diameter2.6875 INCHES NOMINAL IN
inlet_locationLOCATED ON SIDE OF BODY
muffler_designSTRAIGHT THROUGH W/BAFFLE
overall_length24.000 INCHES NOMINAL IN
NSN5960-00-061-1181
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR MFR: Giochi Preziosi TAPPET,ENGINE POPPET VALVE TITLE COMPONENT PN 5557 MFR Giochi Preziosi TAPPET,ENGINE POPPET V
KEY FEATURES
•
NONDEFINITIVE SPEC/STD DATA: 5557 TYPE
•
TUBE TYPE: THYRATRON
TECHNICAL CHARACTERISTICS (FLIS)
NONDEFINITIVE SPEC/STD DATA5557 TYPE
TUBE TYPETHYRATRON
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
K5557Interchangeable
interchangeable cross-reference
interchangeable
5557Interchangeable
interchangeable cross-reference
interchangeable
Y400I2110Interchangeable
interchangeable cross-reference
interchangeable
07-850184Interchangeable
interchangeable cross-reference
interchangeable
850184Interchangeable
interchangeable cross-reference
interchangeable
3391FInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 5557?
5557 is a TAPPET,ENGINE POPPET VALVE manufactured by Giochi Preziosi.
What parts can replace 5557?
There are 17 known substitutes for 5557: K5557, 5557, Y400I2110 and 14 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 5557?
5557 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5960-00-061-1181. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026