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S1-257842R91 — Technical Data Sheet

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— · 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

CAPACITOR,VARIABLE,AIR DIELECTRI. Key specifications include standard_bore_diameter: 5.750 INCHES IN, ring_set_component_parts: COMPRESSION RING,263891R1,31007,1,COMPRESSION RING,250995R2,31007,2,OIL RING,262252R1,31007,1,OIL RING,250646R2,31007,1. This part is cataloged in the Federal Logistics Information System under NSN 2815-00-555-6270, 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
S1-257842R91
NSN: 2815-00-555-6270
FSC: 2815
CAGE: 92679 — NAVISTAR INTL CORP MELROSE PARK ENGINE PLANT LOCATION /MELROSE PARK/ (USA)
SPECIFICATIONS
standard_bore_diameter5.750 INCHES IN
ring_set_component_partsCOMPRESSION RING,263891R1,31007,1,COMPRESSION RING,250995R2,31007,2,OIL RING,262252R1,31007,1,OIL RING,250646R2,31007,1
piston_accommodation_quantity1
NSN2815-00-555-6270
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CAPACITOR,VARIABLE,AIR DIELECTRI TITLE COMPONENT PN S1-257842R91 MFR CAPACITOR,VARIABLE,AIR
KEY FEATURES
•
PISTON ACCOMMODATION QUANTITY: 1
•
STANDARD BORE DIAMETER: 5.750 INCHES IN
•
RING SET COMPONENT PARTS: COMPRESSION RING,263891R1,31007,1,COMPRESSION RING,250995R2,31007,2,OIL RING,262252R1,31007,1,OIL RING,250646R2,31007,1
TYPICAL APPLICATIONS
  • RAID cache protection during power loss events
  • Write-back cache enablement for storage controllers
  • Enterprise server data integrity assurance
  • Hot-swap battery/capacitor replacement in production
TECHNICAL CHARACTERISTICS
PISTON ACCOMMODATION QUANTITY1
STANDARD BORE DIAMETER5.750 INCHES IN
RING SET COMPONENT PARTSCOMPRESSION RING,263891R1,31007,1,COMPRESSION RING,250995R2,31007,2,OIL RING,262252R1,31007,1,OIL RING,250646R2,31007,1
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
GGG-D-296 TY3SEBInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
24159InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
1266InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
8774512-1InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
7263InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
122100H45InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLEDGOVERNMENT REGISTRY
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is S1-257842R91?
S1-257842R91 is a CAPACITOR,VARIABLE,AIR DIELECTRI.
What parts can replace S1-257842R91?
There are 18 known substitutes for S1-257842R91: GGG-D-296 TY3SEB, 24159, 1266 and 15 more. Substitute compatibility should be verified for your specific system.
Is S1-257842R91 still available?
S1-257842R91 is currently cancelled.
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PartsTable Design LLC · partstable.com
Last verified: October 2026