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CA551 ✓ 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

FILTER ELEMENT,INTAKE AIR CLEANE. Key specifications include body_diameter: 10.230 INCHES NOMINAL IN, special_features: WEAPON SYSTEM ESSENTIAL, style_designator: CYLINDRICAL W/ CONTAINER (RIGID), body_overall_length: 10.375 INCHES NOMINAL IN, body_inside_diameter: 5.500 INCHES NOMINAL IN, criticality_code_justification: FEAT. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 2940-01-123-3625, 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
CA551
NSN: 2940-01-123-3625
FSC: 2940
CAGE: 73370 — HONEYWELL INTERNATIONAL INC DBA HONEYWELL DIV CONSUMER PRODUCTS GROUP (USA)
SPECIFICATIONS
body_diameter10.230 INCHES NOMINAL IN
special_featuresWEAPON SYSTEM ESSENTIAL
style_designatorCYLINDRICAL W/ CONTAINER (RIGID)
body_overall_length10.375 INCHES NOMINAL IN
body_inside_diameter5.500 INCHES NOMINAL IN
criticality_code_justificationFEAT
NSN2940-01-123-3625
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available FILTER ELEMENT,INTAKE AIR CLEANE TITLE COMPONENT PN CA551 MFR FILTER ELEMENT,INTAKE
KEY FEATURES
•
BODY OVERALL LENGTH: 10.375 INCHES NOMINAL IN
•
BODY INSIDE DIAMETER: 5.500 INCHES NOMINAL IN
•
STYLE DESIGNATOR: CYLINDRICAL W/ CONTAINER (RIGID)
•
BODY DIAMETER: 10.230 INCHES NOMINAL IN
•
CRITICALITY CODE JUSTIFICATION: FEAT
TECHNICAL CHARACTERISTICS (FLIS)
BODY OVERALL LENGTH10.375 INCHES NOMINAL IN
SPECIAL FEATURESWEAPON SYSTEM ESSENTIAL
BODY INSIDE DIAMETER5.500 INCHES NOMINAL IN
STYLE DESIGNATORCYLINDRICAL W/ CONTAINER (RIGID)
BODY DIAMETER10.230 INCHES NOMINAL IN
CRITICALITY CODE JUSTIFICATIONFEAT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
42-109Interchangeable
interchangeable cross-reference
interchangeable
697398-1Interchangeable
interchangeable cross-reference
interchangeable
23060Interchangeable
interchangeable cross-reference
interchangeable
504C-4Interchangeable
interchangeable cross-reference
interchangeable
ER4-1Interchangeable
interchangeable cross-reference
interchangeable
A1022647Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is CA551?
CA551 is a FILTER ELEMENT,INTAKE AIR CLEANE.
What parts can replace CA551?
There are 20 known substitutes for CA551: 42-109, 697398-1, 23060 and 17 more. Substitute compatibility should be verified for your specific system.
What is the NSN for CA551?
CA551 is cataloged in the Federal Logistics Information System (FLIS) under NSN 2940-01-123-3625. 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