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903673 ✓ 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,PISTON is a the manufacturer industrial component. Key specifications include material: IRON OVERALL, ring_style: CONCENTRIC, joint_style: VERTICAL JOINT, radial_wall_thickness: 0.1250 INCHES NOMINAL IN, standard_bore_diameter: 5.500 INCHES IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4310-01-278-5492, 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
903673
NSN: 4310-01-278-5492
FSC: 4310
CAGE: 3Y473 — MUSKEGON PISTON RING CO MUSKEGON PRODUCTS DIV (USA)
SPECIFICATIONS
materialIRON OVERALL
ring_styleCONCENTRIC
joint_styleVERTICAL JOINT
radial_wall_thickness0.1250 INCHES NOMINAL IN
standard_bore_diameter5.500 INCHES IN
NSN4310-01-278-5492
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available RING,PISTON TITLE COMPONENT PN 903673 MFR RING,PISTON
KEY FEATURES
•
JOINT STYLE: VERTICAL JOINT
•
RING STYLE: CONCENTRIC
•
MATERIAL: IRON OVERALL
•
STANDARD BORE DIAMETER: 5.500 INCHES IN
•
RADIAL WALL THICKNESS: 0.1250 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
JOINT STYLEVERTICAL JOINT
RING STYLECONCENTRIC
MATERIALIRON OVERALL
STANDARD BORE DIAMETER5.500 INCHES IN
RADIAL WALL THICKNESS0.1250 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
371-16Interchangeable
interchangeable cross-reference
interchangeable
037116-01Interchangeable
interchangeable cross-reference
interchangeable
37116-01Interchangeable
interchangeable cross-reference
interchangeable
A-A-2447Interchangeable
interchangeable cross-reference
interchangeable
GGG-F-331Interchangeable
interchangeable cross-reference
interchangeable
37016Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 903673?
903673 is a RING,PISTON.
What parts can replace 903673?
There are 7 known substitutes for 903673: 371-16, 037116-01, 37116-01 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 903673?
903673 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4310-01-278-5492. 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