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SER21 ✓ Verified by PartsTable
— · 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 RING SET,PISTON is a the manufacturer industrial component. Key specifications include standard_bore_diameter: 3.188 INCHES IN, ring_set_component_parts: COMPRESSION RING,F600A347,02978,18,OIL RING,F140A302,02978,6. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 2805-00-516-9448, 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
SER21
NSN: 2805-00-516-9448
FSC: 2805
CAGE: 12603 — CLARK EQUIPMENT CO (USA)
SPECIFICATIONS
standard_bore_diameter3.188 INCHES IN
ring_set_component_partsCOMPRESSION RING,F600A347,02978,18,OIL RING,F140A302,02978,6
piston_accommodation_quantity6
NSN2805-00-516-9448
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available RING SET,PISTON TITLE COMPONENT PN SER21 MFR RING SET,PISTON
KEY FEATURES
•
PISTON ACCOMMODATION QUANTITY: 6
•
RING SET COMPONENT PARTS: COMPRESSION RING,F600A347,02978,18,OIL RING,F140A302,02978,6
•
STANDARD BORE DIAMETER: 3.188 INCHES IN
TECHNICAL CHARACTERISTICS (FLIS)
PISTON ACCOMMODATION QUANTITY6
RING SET COMPONENT PARTSCOMPRESSION RING,F600A347,02978,18,OIL RING,F140A302,02978,6
STANDARD BORE DIAMETER3.188 INCHES IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
5480Interchangeable
interchangeable cross-reference
interchangeable
S6152-62108-011Interchangeable
interchangeable cross-reference
interchangeable
AS4283 TY1CL3Interchangeable
interchangeable cross-reference
interchangeable
00944161000Interchangeable
interchangeable cross-reference
interchangeable
40181Interchangeable
interchangeable cross-reference
interchangeable
8467Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is SER21?
SER21 is a RING SET,PISTON.
What parts can replace SER21?
There are 17 known substitutes for SER21: 5480, S6152-62108-011, AS4283 TY1CL3 and 14 more. Substitute compatibility should be verified for your specific system.
What is the NSN for SER21?
SER21 is cataloged in the Federal Logistics Information System (FLIS) under NSN 2805-00-516-9448. 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